šš Looking for the perfect Java EE project to impress your examiners?
⢠š Complete dual-role portal for Admin and Students
⢠š Full attendance workflow, including leave requests and monthly summaries
⢠š Generate six types of PDF reports effortlessly
⢠š§ Email integration for managing student credentials
⢠š Session-based authentication ensuring secure access
This project is a must-see for all BCA, MCA, and B.Tech CS/IT final year students eager to level up their skills!
š Read Full Article
#Java #JavaEE #SoftwareDevelopment #StudentProjects #TechEducation #Programming #MySQL #WebDevelopment
⢠š Complete dual-role portal for Admin and Students
⢠š Full attendance workflow, including leave requests and monthly summaries
⢠š Generate six types of PDF reports effortlessly
⢠š§ Email integration for managing student credentials
⢠š Session-based authentication ensuring secure access
This project is a must-see for all BCA, MCA, and B.Tech CS/IT final year students eager to level up their skills!
š Read Full Article
#Java #JavaEE #SoftwareDevelopment #StudentProjects #TechEducation #Programming #MySQL #WebDevelopment
ā¤1
š¼ Online Job Portal System in JSP Servlet MySQL
Build a professional job board application! š
⨠What You'll Learn:
⢠Job posting & filtering
⢠Resume uploads
⢠Candidate profiles
⢠Company dashboards
⢠Advanced search features
Complete JSP/Servlet project with full source code included!
š Learn More: https://updategadh.com/online-job-portal-system-in-jsp/
#Java #JSP #CareerPlatform #FinalYearProject #UpdateGadh
Build a professional job board application! š
⨠What You'll Learn:
⢠Job posting & filtering
⢠Resume uploads
⢠Candidate profiles
⢠Company dashboards
⢠Advanced search features
Complete JSP/Servlet project with full source code included!
š Learn More: https://updategadh.com/online-job-portal-system-in-jsp/
#Java #JSP #CareerPlatform #FinalYearProject #UpdateGadh
https://updategadh.com/
Online Job Portal System in JSP Servlet MySQL ā Full Project
Online Job Portal System in JSP Servlet MySQL with Job Seeker, Employer and Admin panels. Full final year project 2026
ā¤1
š° Payroll Management System in Java
Manage employee salaries like a pro! šÆ
⨠Features:
⢠Employee database
⢠Salary calculation
⢠Pay slip generation
⢠Deductions & allowances
⢠Report generation
A complete desktop application using Java Swing & MySQL!
š Get Started: https://updategadh.com/payroll-management-system-in-java/
#Java #DesktopApp #HRSystem #Swing #UpdateGadh
Manage employee salaries like a pro! šÆ
⨠Features:
⢠Employee database
⢠Salary calculation
⢠Pay slip generation
⢠Deductions & allowances
⢠Report generation
A complete desktop application using Java Swing & MySQL!
š Get Started: https://updategadh.com/payroll-management-system-in-java/
#Java #DesktopApp #HRSystem #Swing #UpdateGadh
https://updategadh.com/
Payroll Management System in Java Swing MySQL
Payroll Management System in Java Swing and MySQL with salary components, attendance tracking and pay slip generation. Final year project
TOP 8 ANDROID PROJECT IDEAS FOR 2026!
Build These = Get Hired Faster!
====================================
Android developers are in HIGH demand!
Companies hiring freshers with 1-2 good apps!
====================================
BEGINNER LEVEL
1. Student Attendance App
-> Teacher marks attendance on phone
-> Shows monthly attendance report
-> Skills: Java/Kotlin, SQLite, RecyclerView
-> Why it works: Every college needs this!
2. Expense Tracker App
-> Add income & expenses daily
-> Show pie charts of spending
-> Skills: Kotlin, Room DB, MPAndroidChart
-> Why it works: Everyone uses money apps!
3. Quiz App
-> Multiple choice questions with timer
-> Show score + correct answers at end
-> Skills: Java, SharedPreferences, Intent
-> Why it works: Simple + complete project!
====================================
INTERMEDIATE LEVEL
4. News App with API
-> Fetch live news from NewsAPI.org (FREE)
-> Category filter: Tech, Sports, Business
-> Skills: Kotlin, Retrofit, RecyclerView, API
-> Why it works: Shows API integration skills!
5. Chat App (Firebase)
-> Real-time messaging between users
-> Login with phone OTP
-> Skills: Kotlin, Firebase Auth, Firestore
-> Why it works: WhatsApp clone = WOW factor!
6. Food Ordering App
-> Browse menu, add to cart, place order
-> Admin panel to manage menu items
-> Skills: Kotlin, Firebase, RecyclerView
-> Why it works: Zomato clone = instantly understood!
====================================
ADVANCED LEVEL (Final Year Projects)
7. AI Face Recognition Attendance
-> Camera scans face -> auto marks attendance
-> No manual entry needed!
-> Skills: Kotlin, ML Kit, Firebase, CameraX
-> Why it works: AI + Android = top combo in 2026!
8. Health & Fitness Tracker with AI Tips
-> Track steps, calories, water intake
-> AI gives personalized health tips
-> Skills: Kotlin, Gemini/GPT API, Room DB
-> Why it works: Health + AI = top trending niche!
====================================
MAKE YOUR APP STAND OUT:
Upload to Google Play Store (FREE)
Record a 1-min demo video (Loom)
Add screenshots to your resume
Share GitHub repo link in interview
Mention download count if on Play Store!
TOOLS YOU NEED (ALL FREE):
Android Studio ā IDE
Firebase ā Backend (FREE tier)
Figma ā UI Design
GitHub ā Code storage
Loom ā Demo recording
====================================
Want full source code for these apps?
https://t.me/Projectwithsourcecodes
Which app will you build first?
Drop the number in comments!
#AndroidProjects #AndroidDev #Kotlin #Java
#AndroidStudio #Firebase #MobileApp #AppDev
#BTech2026 #MCA2026 #BCA2026 #CollegeProject
#FinalYearProject #MLKit #AIAndroid #ChatApp
#GooglePlayStore #ProjectWithSourceCodes
#StudentsOfIndia #MobileDevelopment #AppDeveloper
Build These = Get Hired Faster!
====================================
Android developers are in HIGH demand!
Companies hiring freshers with 1-2 good apps!
====================================
BEGINNER LEVEL
1. Student Attendance App
-> Teacher marks attendance on phone
-> Shows monthly attendance report
-> Skills: Java/Kotlin, SQLite, RecyclerView
-> Why it works: Every college needs this!
2. Expense Tracker App
-> Add income & expenses daily
-> Show pie charts of spending
-> Skills: Kotlin, Room DB, MPAndroidChart
-> Why it works: Everyone uses money apps!
3. Quiz App
-> Multiple choice questions with timer
-> Show score + correct answers at end
-> Skills: Java, SharedPreferences, Intent
-> Why it works: Simple + complete project!
====================================
INTERMEDIATE LEVEL
4. News App with API
-> Fetch live news from NewsAPI.org (FREE)
-> Category filter: Tech, Sports, Business
-> Skills: Kotlin, Retrofit, RecyclerView, API
-> Why it works: Shows API integration skills!
5. Chat App (Firebase)
-> Real-time messaging between users
-> Login with phone OTP
-> Skills: Kotlin, Firebase Auth, Firestore
-> Why it works: WhatsApp clone = WOW factor!
6. Food Ordering App
-> Browse menu, add to cart, place order
-> Admin panel to manage menu items
-> Skills: Kotlin, Firebase, RecyclerView
-> Why it works: Zomato clone = instantly understood!
====================================
ADVANCED LEVEL (Final Year Projects)
7. AI Face Recognition Attendance
-> Camera scans face -> auto marks attendance
-> No manual entry needed!
-> Skills: Kotlin, ML Kit, Firebase, CameraX
-> Why it works: AI + Android = top combo in 2026!
8. Health & Fitness Tracker with AI Tips
-> Track steps, calories, water intake
-> AI gives personalized health tips
-> Skills: Kotlin, Gemini/GPT API, Room DB
-> Why it works: Health + AI = top trending niche!
====================================
MAKE YOUR APP STAND OUT:
Upload to Google Play Store (FREE)
Record a 1-min demo video (Loom)
Add screenshots to your resume
Share GitHub repo link in interview
Mention download count if on Play Store!
TOOLS YOU NEED (ALL FREE):
Android Studio ā IDE
Firebase ā Backend (FREE tier)
Figma ā UI Design
GitHub ā Code storage
Loom ā Demo recording
====================================
Want full source code for these apps?
https://t.me/Projectwithsourcecodes
Which app will you build first?
Drop the number in comments!
#AndroidProjects #AndroidDev #Kotlin #Java
#AndroidStudio #Firebase #MobileApp #AppDev
#BTech2026 #MCA2026 #BCA2026 #CollegeProject
#FinalYearProject #MLKit #AIAndroid #ChatApp
#GooglePlayStore #ProjectWithSourceCodes
#StudentsOfIndia #MobileDevelopment #AppDeveloper
Telegram
ProjectWithSourceCodes
Free Source Code Projects for Students š | Python | Java | Android | Web Dev | AI/ML | Final Year Projects | BCA ⢠BTech ⢠MCA | Interview Prep | Job Alerts
Website: https://updategadh.com
Website: https://updategadh.com
5 TRENDING ANDROID APP PROJECTS
Build These to Get Mobile Dev Jobs in 2025-26!
====================================
Android = 3 Billion+ devices worldwide!
Companies like Zomato, PhonePe, Paytm, Swiggy
hire Android developers starting at 6-12 LPA!
====================================
PROJECT 1: Expense Tracker App
What it does: Track daily income & expenses
Tech: Android (Java/Kotlin) + SQLite + MPAndroidChart
Features:
-> Add/Edit/Delete transactions
-> Category-wise pie chart
-> Monthly summary with bar graph
-> Export to PDF/Excel
What you learn: CRUD with SQLite, RecyclerView,
Charts, Room Database
Perfect for: BCA/BTech final year project!
====================================
PROJECT 2: Food Ordering App (Zomato Clone)
What it does: Browse menus & place food orders
Tech: Android (Kotlin) + Firebase + Razorpay API
Features:
-> Restaurant listing with search
-> Cart system + live order tracking
-> Firebase authentication
-> Payment gateway integration
What you learn: Firebase Firestore, RecyclerView,
Payment APIs, Real-time database
====================================
PROJECT 3: Student Attendance App
What it does: Mark & track student attendance
Tech: Android (Java) + Firebase Realtime DB
Features:
-> Teacher & student login
-> Subject-wise attendance marking
-> Auto-calculate percentage
-> Send low-attendance alerts
What you learn: Firebase Auth, MVVM architecture,
Push notifications
====================================
PROJECT 4: News App with Live API
What it does: Show latest news like Inshorts
Tech: Android (Kotlin) + Retrofit + NewsAPI
Features:
-> Category filter (Tech/Sports/Business)
-> Search news by keyword
-> Save articles for offline reading
-> Share news via WhatsApp
What you learn: REST APIs, Retrofit, Glide,
Room for offline caching
====================================
PROJECT 5: AI Chat App (Gemini API)
What it does: ChatGPT-style app on Android
Tech: Android (Kotlin) + Gemini API + Material UI
Features:
-> Text + image input (multimodal AI)
-> Save chat history locally
-> Dark/Light theme toggle
-> Voice-to-text input
What you learn: Gemini/OpenAI API integration,
Coroutines, ViewModel, LiveData
Most trending Android project in 2025!
====================================
FREE RESOURCES TO START:
Android Docs -> developer.android.com
Firebase -> firebase.google.com
Kotlin -> kotlinlang.org
NewsAPI (free) -> newsapi.org
====================================
Want full source code for these apps?
https://t.me/Projectwithsourcecodes
Comment which app you want to build!
#AndroidProjects #AndroidDev #KotlinAndroid
#MobileApp #Firebase #FinalYearProject
#BTech2026 #MCA2026 #BCA2026 #AppDevelopment
#AndroidStudio #Kotlin #Java #GeminiAPI
#ProjectWithSourceCodes #StudentsOfIndia
Build These to Get Mobile Dev Jobs in 2025-26!
====================================
Android = 3 Billion+ devices worldwide!
Companies like Zomato, PhonePe, Paytm, Swiggy
hire Android developers starting at 6-12 LPA!
====================================
PROJECT 1: Expense Tracker App
What it does: Track daily income & expenses
Tech: Android (Java/Kotlin) + SQLite + MPAndroidChart
Features:
-> Add/Edit/Delete transactions
-> Category-wise pie chart
-> Monthly summary with bar graph
-> Export to PDF/Excel
What you learn: CRUD with SQLite, RecyclerView,
Charts, Room Database
Perfect for: BCA/BTech final year project!
====================================
PROJECT 2: Food Ordering App (Zomato Clone)
What it does: Browse menus & place food orders
Tech: Android (Kotlin) + Firebase + Razorpay API
Features:
-> Restaurant listing with search
-> Cart system + live order tracking
-> Firebase authentication
-> Payment gateway integration
What you learn: Firebase Firestore, RecyclerView,
Payment APIs, Real-time database
====================================
PROJECT 3: Student Attendance App
What it does: Mark & track student attendance
Tech: Android (Java) + Firebase Realtime DB
Features:
-> Teacher & student login
-> Subject-wise attendance marking
-> Auto-calculate percentage
-> Send low-attendance alerts
What you learn: Firebase Auth, MVVM architecture,
Push notifications
====================================
PROJECT 4: News App with Live API
What it does: Show latest news like Inshorts
Tech: Android (Kotlin) + Retrofit + NewsAPI
Features:
-> Category filter (Tech/Sports/Business)
-> Search news by keyword
-> Save articles for offline reading
-> Share news via WhatsApp
What you learn: REST APIs, Retrofit, Glide,
Room for offline caching
====================================
PROJECT 5: AI Chat App (Gemini API)
What it does: ChatGPT-style app on Android
Tech: Android (Kotlin) + Gemini API + Material UI
Features:
-> Text + image input (multimodal AI)
-> Save chat history locally
-> Dark/Light theme toggle
-> Voice-to-text input
What you learn: Gemini/OpenAI API integration,
Coroutines, ViewModel, LiveData
Most trending Android project in 2025!
====================================
FREE RESOURCES TO START:
Android Docs -> developer.android.com
Firebase -> firebase.google.com
Kotlin -> kotlinlang.org
NewsAPI (free) -> newsapi.org
====================================
Want full source code for these apps?
https://t.me/Projectwithsourcecodes
Comment which app you want to build!
#AndroidProjects #AndroidDev #KotlinAndroid
#MobileApp #Firebase #FinalYearProject
#BTech2026 #MCA2026 #BCA2026 #AppDevelopment
#AndroidStudio #Kotlin #Java #GeminiAPI
#ProjectWithSourceCodes #StudentsOfIndia
Telegram
ProjectWithSourceCodes
Free Source Code Projects for Students š | Python | Java | Android | Web Dev | AI/ML | Final Year Projects | BCA ⢠BTech ⢠MCA | Interview Prep | Job Alerts
Website: https://updategadh.com
Website: https://updategadh.com
DSA CHEAT SHEET ā Save This!
Data Structures Asked in Every Interview!
====================================
DSA is tested in ALL product company interviews!
Amazon, Google, Microsoft, Flipkart, Adobe ā
ALL start with DSA rounds. Master this!
====================================
ARRAYS ā Most Basic, Most Asked!
Find max/min in array -> O(n) linear scan
Reverse an array -> two pointer approach
Find duplicates -> use HashSet O(n)
Rotate array by k -> reverse technique
Two Sum problem -> HashMap O(n)
Sliding Window -> for subarray problems
====================================
STRINGS
Palindrome check -> two pointers
Anagram check -> sort both or HashMap
Longest common prefix -> vertical scan
Count vowels/consonants -> loop + set
String reversal -> s[::-1] in Python
====================================
LINKED LIST ā Very Frequently Asked!
Reverse a linked list -> 3 pointer trick
Detect cycle -> Floyd's algo (slow/fast)
Find middle node -> slow/fast pointers
Merge 2 sorted lists -> compare & merge
Remove Nth node from end -> two pass
====================================
STACK & QUEUE
Stack: LIFO ā use for:
-> Valid parentheses check
-> Next Greater Element
-> Undo/Redo operations
Queue: FIFO ā use for:
-> BFS (level order traversal)
-> Sliding window maximum
====================================
TREES ā 30% of Interview Questions!
Inorder: Left -> Root -> Right
Preorder: Root -> Left -> Right
Postorder: Left -> Right -> Root
Level Order -> use Queue (BFS)
Height of tree -> recursion
Check BST -> inorder should be sorted
LCA of two nodes -> recursive approach
====================================
SORTING ALGORITHMS
Bubble Sort -> O(n²) | Simple
Selection Sort -> O(n²) | Simple
Insertion Sort -> O(n²) | Best for small
Merge Sort -> O(nlogn) | Stable sort
Quick Sort -> O(nlogn) | In-place
For interviews: Know Merge Sort well!
====================================
SEARCHING
Linear Search -> O(n) | Unsorted array
Binary Search -> O(logn) | Sorted array only
Binary Search template:
low, high = 0, len(arr)-1
while low <= high:
mid = (low + high) // 2
if arr[mid] == target: return mid
elif arr[mid] < target: low = mid+1
else: high = mid-1
====================================
TIME COMPLEXITY QUICK REFERENCE:
O(1) -> Constant | Array index access
O(logn) -> Log | Binary search
O(n) -> Linear | Single loop
O(nlogn) -> Linearithmic | Merge sort
O(n²) -> Quadratic | Nested loops
====================================
TOP DSA PLATFORMS TO PRACTICE:
LeetCode -> leetcode.com (must!)
HackerRank -> hackerrank.com
GeeksForGeeks -> geeksforgeeks.org
Codeforces -> codeforces.com
====================================
Save this post ā revise before every interview!
Get FREE projects with DSA implementation:
https://t.me/Projectwithsourcecodes
Share with your placement batch!
#DSA #DataStructures #Algorithms #LeetCode
#CodingInterview #TechInterview #Placements
#BTech2026 #MCA2026 #BCA2026 #CompetitiveCoding
#Java #Python #DSACheatSheet #FAANG
#ProjectWithSourceCodes #StudentsOfIndia
Data Structures Asked in Every Interview!
====================================
DSA is tested in ALL product company interviews!
Amazon, Google, Microsoft, Flipkart, Adobe ā
ALL start with DSA rounds. Master this!
====================================
ARRAYS ā Most Basic, Most Asked!
Find max/min in array -> O(n) linear scan
Reverse an array -> two pointer approach
Find duplicates -> use HashSet O(n)
Rotate array by k -> reverse technique
Two Sum problem -> HashMap O(n)
Sliding Window -> for subarray problems
====================================
STRINGS
Palindrome check -> two pointers
Anagram check -> sort both or HashMap
Longest common prefix -> vertical scan
Count vowels/consonants -> loop + set
String reversal -> s[::-1] in Python
====================================
LINKED LIST ā Very Frequently Asked!
Reverse a linked list -> 3 pointer trick
Detect cycle -> Floyd's algo (slow/fast)
Find middle node -> slow/fast pointers
Merge 2 sorted lists -> compare & merge
Remove Nth node from end -> two pass
====================================
STACK & QUEUE
Stack: LIFO ā use for:
-> Valid parentheses check
-> Next Greater Element
-> Undo/Redo operations
Queue: FIFO ā use for:
-> BFS (level order traversal)
-> Sliding window maximum
====================================
TREES ā 30% of Interview Questions!
Inorder: Left -> Root -> Right
Preorder: Root -> Left -> Right
Postorder: Left -> Right -> Root
Level Order -> use Queue (BFS)
Height of tree -> recursion
Check BST -> inorder should be sorted
LCA of two nodes -> recursive approach
====================================
SORTING ALGORITHMS
Bubble Sort -> O(n²) | Simple
Selection Sort -> O(n²) | Simple
Insertion Sort -> O(n²) | Best for small
Merge Sort -> O(nlogn) | Stable sort
Quick Sort -> O(nlogn) | In-place
For interviews: Know Merge Sort well!
====================================
SEARCHING
Linear Search -> O(n) | Unsorted array
Binary Search -> O(logn) | Sorted array only
Binary Search template:
low, high = 0, len(arr)-1
while low <= high:
mid = (low + high) // 2
if arr[mid] == target: return mid
elif arr[mid] < target: low = mid+1
else: high = mid-1
====================================
TIME COMPLEXITY QUICK REFERENCE:
O(1) -> Constant | Array index access
O(logn) -> Log | Binary search
O(n) -> Linear | Single loop
O(nlogn) -> Linearithmic | Merge sort
O(n²) -> Quadratic | Nested loops
====================================
TOP DSA PLATFORMS TO PRACTICE:
LeetCode -> leetcode.com (must!)
HackerRank -> hackerrank.com
GeeksForGeeks -> geeksforgeeks.org
Codeforces -> codeforces.com
====================================
Save this post ā revise before every interview!
Get FREE projects with DSA implementation:
https://t.me/Projectwithsourcecodes
Share with your placement batch!
#DSA #DataStructures #Algorithms #LeetCode
#CodingInterview #TechInterview #Placements
#BTech2026 #MCA2026 #BCA2026 #CompetitiveCoding
#Java #Python #DSACheatSheet #FAANG
#ProjectWithSourceCodes #StudentsOfIndia
Telegram
ProjectWithSourceCodes
Free Source Code Projects for Students š | Python | Java | Android | Web Dev | AI/ML | Final Year Projects | BCA ⢠BTech ⢠MCA | Interview Prep | Job Alerts
Website: https://updategadh.com
Website: https://updategadh.com
DSA CHEAT SHEET - Save This!
Data Structures Asked in Every Tech Interview!
====================================
DSA is tested at Amazon, Google, Microsoft,
Flipkart, Adobe, Uber, Swiggy ā ALL of them!
Master these before your placement rounds!
====================================
ARRAYS - Most Basic, Most Asked!
Two Sum -> HashMap O(n)
Find max/min -> linear scan O(n)
Reverse array -> two pointers O(n)
Find duplicates -> HashSet O(n)
Rotate by k -> reverse technique O(n)
Subarray sum -> sliding window O(n)
Merge sorted arrays -> two pointer O(n+m)
====================================
STRINGS
Palindrome check -> two pointers O(n)
Anagram check -> sort or HashMap O(n)
Longest substring no repeat -> sliding window
String reversal -> s[::-1] in Python
Count char frequency -> HashMap O(n)
====================================
LINKED LIST - Very Frequently Asked!
Reverse linked list -> 3 pointer trick O(n)
Detect cycle -> Floyd's slow/fast O(n)
Find middle -> slow/fast pointers O(n)
Merge 2 sorted lists -> compare & link O(n)
Remove Nth from end -> two pass O(n)
====================================
STACK & QUEUE
Stack (LIFO) - use for:
-> Valid parentheses {[()]}
-> Next Greater Element
-> Undo/Redo operations
Queue (FIFO) - use for:
-> BFS (level order tree traversal)
-> Sliding window maximum
====================================
TREES - 30% of Interview Questions!
Inorder: Left Root Right
Preorder: Root Left Right
Postorder: Left Right Root
Level Order: BFS using Queue
Height of tree -> recursion O(n)
Check BST valid -> inorder sorted check
Lowest Common Ancestor -> recursive O(n)
Path sum root to leaf -> DFS O(n)
====================================
GRAPHS
BFS -> Queue, shortest path unweighted
DFS -> Stack/Recursion, path finding
Detect cycle undirected -> Union Find
Detect cycle directed -> DFS + visited
Topological Sort -> Kahn's algo (BFS)
====================================
DYNAMIC PROGRAMMING
Fibonacci -> memoization O(n)
0/1 Knapsack -> 2D DP O(n*W)
Longest Common Subsequence -> 2D DP
Coin Change -> bottom-up DP O(n*amount)
Climb Stairs -> DP same as Fibonacci
====================================
TIME COMPLEXITY QUICK REFERENCE:
O(1) Constant | Array index
O(logn) Log | Binary search
O(n) Linear | Single loop
O(nlogn) Linearithmic | Merge sort
O(n2) Quadratic | Nested loops
O(2n) Exponential | Recursion tree
====================================
TOP DSA PRACTICE PLATFORMS:
LeetCode -> leetcode.com (must!)
GeeksForGeeks -> geeksforgeeks.org
HackerRank -> hackerrank.com
Codeforces -> codeforces.com
====================================
Save this - revise before every interview!
Get FREE projects with DSA implementations:
https://t.me/Projectwithsourcecodes
Share with your placement batch!
#DSACheatSheet #DSA #DataStructures #Algorithms
#LeetCode #CodingInterview #Placements #FAANG
#BTech2026 #MCA2026 #BCA2026 #CompetitiveCoding
#Java #Python #TechInterview #DynamicProgramming
#ProjectWithSourceCodes #StudentsOfIndia
Data Structures Asked in Every Tech Interview!
====================================
DSA is tested at Amazon, Google, Microsoft,
Flipkart, Adobe, Uber, Swiggy ā ALL of them!
Master these before your placement rounds!
====================================
ARRAYS - Most Basic, Most Asked!
Two Sum -> HashMap O(n)
Find max/min -> linear scan O(n)
Reverse array -> two pointers O(n)
Find duplicates -> HashSet O(n)
Rotate by k -> reverse technique O(n)
Subarray sum -> sliding window O(n)
Merge sorted arrays -> two pointer O(n+m)
====================================
STRINGS
Palindrome check -> two pointers O(n)
Anagram check -> sort or HashMap O(n)
Longest substring no repeat -> sliding window
String reversal -> s[::-1] in Python
Count char frequency -> HashMap O(n)
====================================
LINKED LIST - Very Frequently Asked!
Reverse linked list -> 3 pointer trick O(n)
Detect cycle -> Floyd's slow/fast O(n)
Find middle -> slow/fast pointers O(n)
Merge 2 sorted lists -> compare & link O(n)
Remove Nth from end -> two pass O(n)
====================================
STACK & QUEUE
Stack (LIFO) - use for:
-> Valid parentheses {[()]}
-> Next Greater Element
-> Undo/Redo operations
Queue (FIFO) - use for:
-> BFS (level order tree traversal)
-> Sliding window maximum
====================================
TREES - 30% of Interview Questions!
Inorder: Left Root Right
Preorder: Root Left Right
Postorder: Left Right Root
Level Order: BFS using Queue
Height of tree -> recursion O(n)
Check BST valid -> inorder sorted check
Lowest Common Ancestor -> recursive O(n)
Path sum root to leaf -> DFS O(n)
====================================
GRAPHS
BFS -> Queue, shortest path unweighted
DFS -> Stack/Recursion, path finding
Detect cycle undirected -> Union Find
Detect cycle directed -> DFS + visited
Topological Sort -> Kahn's algo (BFS)
====================================
DYNAMIC PROGRAMMING
Fibonacci -> memoization O(n)
0/1 Knapsack -> 2D DP O(n*W)
Longest Common Subsequence -> 2D DP
Coin Change -> bottom-up DP O(n*amount)
Climb Stairs -> DP same as Fibonacci
====================================
TIME COMPLEXITY QUICK REFERENCE:
O(1) Constant | Array index
O(logn) Log | Binary search
O(n) Linear | Single loop
O(nlogn) Linearithmic | Merge sort
O(n2) Quadratic | Nested loops
O(2n) Exponential | Recursion tree
====================================
TOP DSA PRACTICE PLATFORMS:
LeetCode -> leetcode.com (must!)
GeeksForGeeks -> geeksforgeeks.org
HackerRank -> hackerrank.com
Codeforces -> codeforces.com
====================================
Save this - revise before every interview!
Get FREE projects with DSA implementations:
https://t.me/Projectwithsourcecodes
Share with your placement batch!
#DSACheatSheet #DSA #DataStructures #Algorithms
#LeetCode #CodingInterview #Placements #FAANG
#BTech2026 #MCA2026 #BCA2026 #CompetitiveCoding
#Java #Python #TechInterview #DynamicProgramming
#ProjectWithSourceCodes #StudentsOfIndia
Telegram
ProjectWithSourceCodes
Free Source Code Projects for Students š | Python | Java | Android | Web Dev | AI/ML | Final Year Projects | BCA ⢠BTech ⢠MCA | Interview Prep | Job Alerts
Website: https://updategadh.com
Website: https://updategadh.com
5 TRENDING ANDROID APP PROJECTS
Build These to Get Mobile Dev Jobs in 2025-26!
====================================
Android = 3 Billion+ active devices worldwide!
Synchrony, Paytm, PhonePe, Zomato, Swiggy
ALL hire Android devs starting at 6-15 LPA!
====================================
PROJECT 1: UPI Payment App Clone
What it does: Send/receive money like PhonePe
Tech: Android (Kotlin) + Firebase + Razorpay API
Features:
-> User registration with phone OTP
-> Add bank account / UPI ID
-> Send money with QR code scanner
-> Transaction history with filters
What you learn: Firebase Auth, Razorpay SDK,
QR code scanning, real-time database
Perfect for: Fintech company interviews!
====================================
PROJECT 2: Food Delivery App (Swiggy Clone)
What it does: Browse menus and order food
Tech: Android (Kotlin) + Firebase + Google Maps API
Features:
-> Restaurant listing with search and filter
-> Real-time order tracking on map
-> Cart system with quantity controls
-> Push notifications for order updates
What you learn: Google Maps SDK, Firebase Firestore,
RecyclerView, push notifications with FCM
====================================
PROJECT 3: Student Study Planner App
What it does: Plan study schedule and track progress
Tech: Android (Java) + SQLite + Room Database
Features:
-> Add subjects and set daily study goals
-> Timer for Pomodoro study sessions
-> Progress chart with weekly stats
-> Exam countdown timer with reminders
What you learn: Room Database, AlarmManager,
MPAndroidChart, WorkManager for background tasks
====================================
PROJECT 4: News Reader App (Inshorts Clone)
What it does: Show 60-word news summaries
Tech: Android (Kotlin) + Retrofit + NewsAPI
Features:
-> Swipe-up for next news (TikTok-style)
-> Category filter: Tech, Sports, Business
-> Save articles for offline reading
-> Share news via WhatsApp
What you learn: Retrofit REST API calls, ViewPager2,
Glide image loading, Room for offline cache
====================================
PROJECT 5: AI Chat Assistant App
What it does: ChatGPT-style app on Android
Tech: Android (Kotlin) + Gemini API + Material UI 3
Features:
-> Text + image input (multimodal AI)
-> Voice-to-text input with mic button
-> Save and restore chat history
-> Dark/Light theme switcher
What you learn: Gemini API, Coroutines, ViewModel,
LiveData, speech recognition, Material You theming
Most trending Android project in 2025-26!
====================================
FREE RESOURCES:
Android Docs -> developer.android.com
Kotlin -> kotlinlang.org/docs
Firebase -> firebase.google.com/docs
Gemini API (free) -> ai.google.dev
====================================
Want full source code for these apps?
https://t.me/Projectwithsourcecodes
Comment WHICH project you want next!
#AndroidProjects #AndroidDev #KotlinAndroid
#MobileApp #Firebase #GeminiAPI #FinalYearProject
#BTech2026 #MCA2026 #BCA2026 #AppDevelopment
#AndroidStudio #Kotlin #Java #UPI
#ProjectWithSourceCodes #StudentsOfIndia
Build These to Get Mobile Dev Jobs in 2025-26!
====================================
Android = 3 Billion+ active devices worldwide!
Synchrony, Paytm, PhonePe, Zomato, Swiggy
ALL hire Android devs starting at 6-15 LPA!
====================================
PROJECT 1: UPI Payment App Clone
What it does: Send/receive money like PhonePe
Tech: Android (Kotlin) + Firebase + Razorpay API
Features:
-> User registration with phone OTP
-> Add bank account / UPI ID
-> Send money with QR code scanner
-> Transaction history with filters
What you learn: Firebase Auth, Razorpay SDK,
QR code scanning, real-time database
Perfect for: Fintech company interviews!
====================================
PROJECT 2: Food Delivery App (Swiggy Clone)
What it does: Browse menus and order food
Tech: Android (Kotlin) + Firebase + Google Maps API
Features:
-> Restaurant listing with search and filter
-> Real-time order tracking on map
-> Cart system with quantity controls
-> Push notifications for order updates
What you learn: Google Maps SDK, Firebase Firestore,
RecyclerView, push notifications with FCM
====================================
PROJECT 3: Student Study Planner App
What it does: Plan study schedule and track progress
Tech: Android (Java) + SQLite + Room Database
Features:
-> Add subjects and set daily study goals
-> Timer for Pomodoro study sessions
-> Progress chart with weekly stats
-> Exam countdown timer with reminders
What you learn: Room Database, AlarmManager,
MPAndroidChart, WorkManager for background tasks
====================================
PROJECT 4: News Reader App (Inshorts Clone)
What it does: Show 60-word news summaries
Tech: Android (Kotlin) + Retrofit + NewsAPI
Features:
-> Swipe-up for next news (TikTok-style)
-> Category filter: Tech, Sports, Business
-> Save articles for offline reading
-> Share news via WhatsApp
What you learn: Retrofit REST API calls, ViewPager2,
Glide image loading, Room for offline cache
====================================
PROJECT 5: AI Chat Assistant App
What it does: ChatGPT-style app on Android
Tech: Android (Kotlin) + Gemini API + Material UI 3
Features:
-> Text + image input (multimodal AI)
-> Voice-to-text input with mic button
-> Save and restore chat history
-> Dark/Light theme switcher
What you learn: Gemini API, Coroutines, ViewModel,
LiveData, speech recognition, Material You theming
Most trending Android project in 2025-26!
====================================
FREE RESOURCES:
Android Docs -> developer.android.com
Kotlin -> kotlinlang.org/docs
Firebase -> firebase.google.com/docs
Gemini API (free) -> ai.google.dev
====================================
Want full source code for these apps?
https://t.me/Projectwithsourcecodes
Comment WHICH project you want next!
#AndroidProjects #AndroidDev #KotlinAndroid
#MobileApp #Firebase #GeminiAPI #FinalYearProject
#BTech2026 #MCA2026 #BCA2026 #AppDevelopment
#AndroidStudio #Kotlin #Java #UPI
#ProjectWithSourceCodes #StudentsOfIndia
Kotlin Help
Kotlin Docs | Kotlin
5 TRENDING JAVA & SPRING BOOT PROJECTS
Build These to Get Backend Jobs in 2025-26!
====================================
Java + Spring Boot = Most Hired Backend Stack!
Citi, Goldman Sachs, Barclays, TCS, Wipro,
UPS, Oracle ALL hire Java developers.
Avg fresher salary: 5-14 LPA!
====================================
PROJECT 1: Banking System REST API
What it does: Backend for a digital bank
Tech: Spring Boot + MySQL + Spring Security + JWT
Features:
-> Account creation and login with JWT auth
-> Deposit, withdraw, transfer money APIs
-> Transaction history with pagination
-> Admin panel to manage all accounts
What you learn: Spring Boot REST APIs, Spring
Security, JWT tokens, JPA/Hibernate, MySQL
Resume line: Built secure banking REST API with
JWT auth processing 10K+ daily transactions
====================================
PROJECT 2: E-Commerce Backend (Amazon Clone)
What it does: Full backend for an online store
Tech: Spring Boot + PostgreSQL + Redis + Docker
Features:
-> Product CRUD with category and search
-> Cart and order management system
-> Redis caching for fast product listing
-> Email notifications with Spring Mail
What you learn: Microservices basics, Redis cache,
Docker containerization, database optimization
====================================
PROJECT 3: Employee Management System
What it does: HR management tool for companies
Tech: Spring Boot + Angular/React + MySQL
Features:
-> Add, update, delete employee records
-> Department and role-based access control
-> Attendance and leave management
-> PDF payslip generation
What you learn: Full stack Spring Boot + frontend,
role-based authorization, PDF generation with iText
====================================
PROJECT 4: Real-Time Chat API with WebSocket
What it does: Backend for a messaging app
Tech: Spring Boot + WebSocket + MongoDB + Redis
Features:
-> Real-time messaging with STOMP protocol
-> Group chat rooms and private messaging
-> Message read/delivered status tracking
-> Online users list with Redis pub/sub
What you learn: WebSocket with Spring, MongoDB
for messages, Redis pub/sub, async programming
====================================
PROJECT 5: Microservices with Spring Cloud
What it does: Distributed system with 3+ services
Tech: Spring Boot + Spring Cloud + Docker + Kafka
Services:
-> User Service, Product Service, Order Service
-> API Gateway with Spring Cloud Gateway
-> Service discovery with Eureka
-> Async events with Apache Kafka
What you learn: Microservices architecture,
API Gateway, Kafka messaging, service discovery
Most impressive Java project for 2025-26!
====================================
FREE RESOURCES:
Spring Boot -> spring.io/guides
Baeldung -> baeldung.com (best Spring tutorials)
JavaBrains -> youtube.com/@Java.Brains
Docker -> docs.docker.com/get-started
====================================
Want full source code for these projects?
https://t.me/Projectwithsourcecodes
Comment which project you want to build!
#JavaProjects #SpringBoot #SpringCloud #Java
#BackendDev #Microservices #Kafka #Docker
#BTech2026 #MCA2026 #BCA2026 #FinalYearProject
#JavaDeveloper #REST #API #JPA #Hibernate
#ProjectWithSourceCodes #StudentsOfIndia
Build These to Get Backend Jobs in 2025-26!
====================================
Java + Spring Boot = Most Hired Backend Stack!
Citi, Goldman Sachs, Barclays, TCS, Wipro,
UPS, Oracle ALL hire Java developers.
Avg fresher salary: 5-14 LPA!
====================================
PROJECT 1: Banking System REST API
What it does: Backend for a digital bank
Tech: Spring Boot + MySQL + Spring Security + JWT
Features:
-> Account creation and login with JWT auth
-> Deposit, withdraw, transfer money APIs
-> Transaction history with pagination
-> Admin panel to manage all accounts
What you learn: Spring Boot REST APIs, Spring
Security, JWT tokens, JPA/Hibernate, MySQL
Resume line: Built secure banking REST API with
JWT auth processing 10K+ daily transactions
====================================
PROJECT 2: E-Commerce Backend (Amazon Clone)
What it does: Full backend for an online store
Tech: Spring Boot + PostgreSQL + Redis + Docker
Features:
-> Product CRUD with category and search
-> Cart and order management system
-> Redis caching for fast product listing
-> Email notifications with Spring Mail
What you learn: Microservices basics, Redis cache,
Docker containerization, database optimization
====================================
PROJECT 3: Employee Management System
What it does: HR management tool for companies
Tech: Spring Boot + Angular/React + MySQL
Features:
-> Add, update, delete employee records
-> Department and role-based access control
-> Attendance and leave management
-> PDF payslip generation
What you learn: Full stack Spring Boot + frontend,
role-based authorization, PDF generation with iText
====================================
PROJECT 4: Real-Time Chat API with WebSocket
What it does: Backend for a messaging app
Tech: Spring Boot + WebSocket + MongoDB + Redis
Features:
-> Real-time messaging with STOMP protocol
-> Group chat rooms and private messaging
-> Message read/delivered status tracking
-> Online users list with Redis pub/sub
What you learn: WebSocket with Spring, MongoDB
for messages, Redis pub/sub, async programming
====================================
PROJECT 5: Microservices with Spring Cloud
What it does: Distributed system with 3+ services
Tech: Spring Boot + Spring Cloud + Docker + Kafka
Services:
-> User Service, Product Service, Order Service
-> API Gateway with Spring Cloud Gateway
-> Service discovery with Eureka
-> Async events with Apache Kafka
What you learn: Microservices architecture,
API Gateway, Kafka messaging, service discovery
Most impressive Java project for 2025-26!
====================================
FREE RESOURCES:
Spring Boot -> spring.io/guides
Baeldung -> baeldung.com (best Spring tutorials)
JavaBrains -> youtube.com/@Java.Brains
Docker -> docs.docker.com/get-started
====================================
Want full source code for these projects?
https://t.me/Projectwithsourcecodes
Comment which project you want to build!
#JavaProjects #SpringBoot #SpringCloud #Java
#BackendDev #Microservices #Kafka #Docker
#BTech2026 #MCA2026 #BCA2026 #FinalYearProject
#JavaDeveloper #REST #API #JPA #Hibernate
#ProjectWithSourceCodes #StudentsOfIndia
Guides
Level up your Java code and explore what Spring can do for you.
āļø Java Interview Questions with Answers (Part 1)
1ļøā£ What is Java?
š Java is a high-level, object-oriented programming language designed to be portable across different platforms.
Key features:
š¹ Object-Oriented
š¹ Platform Independent
š¹ Secure
š¹ Robust
š¹ Multithreaded
š¹ Automatic Memory Management
š Write Once, Run Anywhere is commonly associated with Java's platform independence.
2ļøā£ What is JVM?
š JVM stands for Java Virtual Machine. It executes Java bytecode and provides the runtime environment required to run Java applications.
š Basic flow:
š” JVM implementations are platform-specific, which allows the same Java bytecode to run on different operating systems.
3ļøā£ What is the Difference Between JDK, JRE, and JVM?
š These three components have different roles:
š¹ JVM ā Executes Java bytecode
š¹ JRE ā JVM + libraries required to run Java applications
š¹ JDK ā JRE/runtime components + development tools such as the Java compiler
š JDK ā Development
š JRE ā Running applications
š JVM ā Executing bytecode
4ļøā£ What is a Class in Java?
š A class is a blueprint for creating objects. It defines data and behavior through fields, methods, constructors, and other members.
Example:
š” Objects are created from classes.
5ļøā£ What is an Object in Java?
š An object is an instance of a class. It contains state represented by fields and behavior provided by methods.
Example:
š Class ā Blueprint
š Object ā Instance of the class
š¬ Save this for your next Java interview preparation!
š„ Part 2 will cover 5 important questions on Inheritance, Polymorphism, Encapsulation, Abstraction & Constructors.
#Java #JavaInterview #JavaProgramming #Programming #OOP #CodingInterview #SoftwareEngineer #InterviewQuestions #Developer #TechInterview
1ļøā£ What is Java?
š Java is a high-level, object-oriented programming language designed to be portable across different platforms.
Key features:
š¹ Object-Oriented
š¹ Platform Independent
š¹ Secure
š¹ Robust
š¹ Multithreaded
š¹ Automatic Memory Management
š Write Once, Run Anywhere is commonly associated with Java's platform independence.
2ļøā£ What is JVM?
š JVM stands for Java Virtual Machine. It executes Java bytecode and provides the runtime environment required to run Java applications.
š Basic flow:
Java Source Code
ā
Compiler
ā
Bytecode
ā
JVM
ā
Output
š” JVM implementations are platform-specific, which allows the same Java bytecode to run on different operating systems.
3ļøā£ What is the Difference Between JDK, JRE, and JVM?
š These three components have different roles:
š¹ JVM ā Executes Java bytecode
š¹ JRE ā JVM + libraries required to run Java applications
š¹ JDK ā JRE/runtime components + development tools such as the Java compiler
š JDK ā Development
š JRE ā Running applications
š JVM ā Executing bytecode
4ļøā£ What is a Class in Java?
š A class is a blueprint for creating objects. It defines data and behavior through fields, methods, constructors, and other members.
Example:
class Student {
String name;
int age;
void display() {
System.out.println(name + " " + age);
}
}š” Objects are created from classes.
5ļøā£ What is an Object in Java?
š An object is an instance of a class. It contains state represented by fields and behavior provided by methods.
Example:
class Student {
String name;
void display() {
System.out.println(name);
}
}
public class Main {
public static void main(String[] args) {
Student s = new Student();
s.name = "Rahul";
s.display();
}
}š Class ā Blueprint
š Object ā Instance of the class
š¬ Save this for your next Java interview preparation!
š„ Part 2 will cover 5 important questions on Inheritance, Polymorphism, Encapsulation, Abstraction & Constructors.
#Java #JavaInterview #JavaProgramming #Programming #OOP #CodingInterview #SoftwareEngineer #InterviewQuestions #Developer #TechInterview
āļø Java Interview Questions with Answers (Part 2)
6ļøā£ What is Inheritance in Java?
š Inheritance allows a class to acquire fields and methods from another class. It helps create reusable and hierarchical code.
Example:
š
7ļøā£ What is Polymorphism in Java?
š Polymorphism means one interface or method name can represent different behaviors.
Two common forms are:
š¹ Compile-time Polymorphism ā Method Overloading
š¹ Runtime Polymorphism ā Method Overriding
Example of Overloading:
š” The same method name
8ļøā£ What is Encapsulation in Java?
š Encapsulation means bundling data and methods together while controlling direct access to the data.
Example:
š
š” Encapsulation helps protect object state and provides controlled access.
9ļøā£ What is Abstraction in Java?
š Abstraction means hiding implementation details and exposing only the essential functionality.
Java supports abstraction using:
š¹ Abstract Classes
š¹ Interfaces
Example:
š” The user of
š What is a Constructor in Java?
š A constructor is a special member used to initialize an object when it is created.
Example:
š Constructor name must match the class name.
š” Constructors do not have a return type, including
š¬ Save this for your Java interview preparation!
š„ Part 3 will cover 5 important questions on Method Overloading, Method Overriding,
#Java #JavaInterview #JavaProgramming #OOP #CodingInterview #Programming #SoftwareEngineer #InterviewQuestions #Developer #TechInterview
6ļøā£ What is Inheritance in Java?
š Inheritance allows a class to acquire fields and methods from another class. It helps create reusable and hierarchical code.
Example:
class Animal {
void eat() {
System.out.println("Eating");
}
}
class Dog extends Animal {
void bark() {
System.out.println("Barking");
}
}
public class Main {
public static void main(String[] args) {
Dog d = new Dog();
d.eat();
d.bark();
}
}š
Dog inherits the eat() method from Animal.7ļøā£ What is Polymorphism in Java?
š Polymorphism means one interface or method name can represent different behaviors.
Two common forms are:
š¹ Compile-time Polymorphism ā Method Overloading
š¹ Runtime Polymorphism ā Method Overriding
Example of Overloading:
class Calculator {
int add(int a, int b) {
return a + b;
}
int add(int a, int b, int c) {
return a + b + c;
}
}š” The same method name
add() works with different parameter lists.8ļøā£ What is Encapsulation in Java?
š Encapsulation means bundling data and methods together while controlling direct access to the data.
Example:
class Student {
private int age;
public void setAge(int age) {
this.age = age;
}
public int getAge() {
return age;
}
}š
private prevents direct access from outside the class.š” Encapsulation helps protect object state and provides controlled access.
9ļøā£ What is Abstraction in Java?
š Abstraction means hiding implementation details and exposing only the essential functionality.
Java supports abstraction using:
š¹ Abstract Classes
š¹ Interfaces
Example:
abstract class Animal {
abstract void sound();
void sleep() {
System.out.println("Sleeping");
}
}
class Dog extends Animal {
void sound() {
System.out.println("Bark");
}
}š” The user of
Animal does not need to know how sound() is implemented internally.š What is a Constructor in Java?
š A constructor is a special member used to initialize an object when it is created.
Example:
class Student {
String name;
Student(String name) {
this.name = name;
}
void display() {
System.out.println(name);
}
}
public class Main {
public static void main(String[] args) {
Student s = new Student("Rahul");
s.display();
}
}š Constructor name must match the class name.
š” Constructors do not have a return type, including
void.š¬ Save this for your Java interview preparation!
š„ Part 3 will cover 5 important questions on Method Overloading, Method Overriding,
this, super & static.#Java #JavaInterview #JavaProgramming #OOP #CodingInterview #Programming #SoftwareEngineer #InterviewQuestions #Developer #TechInterview
āļø Java Interview Questions with Answers (Part 3)
1ļøā£1ļøā£ What is Method Overloading in Java?
š Method Overloading means having multiple methods with the same name but different parameter lists in the same class.
š” Overloading is resolved at compile time.
1ļøā£2ļøā£ What is Method Overriding in Java?
š Method Overriding occurs when a subclass provides its own implementation of an inherited method.
š” Overriding is associated with runtime polymorphism.
1ļøā£3ļøā£ What is the
š
It is commonly used to:
š¹ Access current object's fields
š¹ Call current class methods
š¹ Invoke another constructor
Example:
1ļøā£4ļøā£ What is the
š
It can be used to:
š¹ Access parent fields
š¹ Call parent methods
š¹ Call the parent constructor
Example:
š Output:
1ļøā£5ļøā£ What is the
š
Example:
š Output:
š” A static field is shared among instances of the class.
š¬ Save this for your Java interview preparation!
š„ Next: Python Interview Questions ā Part 2
#Java #JavaInterview #JavaProgramming #OOP #CodingInterview #Programming #InterviewQuestions #Developer #SoftwareEngineer
1ļøā£1ļøā£ What is Method Overloading in Java?
š Method Overloading means having multiple methods with the same name but different parameter lists in the same class.
class Calculator {
int add(int a, int b) {
return a + b;
}
double add(double a, double b) {
return a + b;
}
}š” Overloading is resolved at compile time.
1ļøā£2ļøā£ What is Method Overriding in Java?
š Method Overriding occurs when a subclass provides its own implementation of an inherited method.
class Animal {
void sound() {
System.out.println("Animal sound");
}
}
class Dog extends Animal {
@Override
void sound() {
System.out.println("Bark");
}
}š” Overriding is associated with runtime polymorphism.
1ļøā£3ļøā£ What is the
this Keyword in Java?š
this refers to the current object.It is commonly used to:
š¹ Access current object's fields
š¹ Call current class methods
š¹ Invoke another constructor
Example:
class Student {
String name;
Student(String name) {
this.name = name;
}
}1ļøā£4ļøā£ What is the
super Keyword in Java?š
super refers to the immediate parent class.It can be used to:
š¹ Access parent fields
š¹ Call parent methods
š¹ Call the parent constructor
Example:
class Animal {
String name = "Animal";
}
class Dog extends Animal {
String name = "Dog";
void display() {
System.out.println(super.name);
}
}š Output:
Animal
1ļøā£5ļøā£ What is the
static Keyword in Java?š
static indicates that a member belongs to the class rather than a particular object.Example:
class Counter {
static int count = 0;
Counter() {
count++;
}
}
public class Main {
public static void main(String[] args) {
new Counter();
new Counter();
System.out.println(Counter.count);
}
}š Output:
2
š” A static field is shared among instances of the class.
š¬ Save this for your Java interview preparation!
š„ Next: Python Interview Questions ā Part 2
#Java #JavaInterview #JavaProgramming #OOP #CodingInterview #Programming #InterviewQuestions #Developer #SoftwareEngineer