Java Programming
31.3K subscribers
407 photos
213 files
239 links
Everything you need to learn Java Programming

Daily Java tutorials, coding challenges, OOP concepts, DSA in Java & more!
Perfect for beginners, CS students & job seekers.

Downloadable PDFs, cheat sheets, interview prep & projects

For ads: @coderfun
Download Telegram
๐Ÿ“ŒSchneider Electric is hiring for the role Java Developer
Experience: 0+ Years
Expected CTC: 5 LPA - 7 LPA
Apply here:
https://cuvette.tech/app/other-jobs/6669d062092059fa5cc2475f?referralCode=8T994D
๐Ÿ‘4
You can make $10,000 by selling ebooks created by AI.

But most people don't know how.

Here's a complete guide on how to create ebooks and sell them:
๐Ÿ‘‡๐Ÿ‘‡
https://t.me/aiindi/44
๐Ÿ‘4
Hands-On Selenium WebDriver with Java.pdf
17.9 MB
Hands-On Selenium WebDriver with Java
Boni Garcรญa, 2022
๐Ÿ‘7
https://topmate.io/coding/886874

If you're a job seeker, these well structured document DSA resources will help you to know and learn all the real time DSA & OOPS Interview questions with their exact answer. folks who are having 0-4+ years of experience have cracked the interview using this guide!

Please use the above link to avail them!๐Ÿ‘†

NOTE: -Most people hoard resources without actually opening them even once! The reason for keeping a small price for these resources is to ensure that you value the content available inside this and encourage you to make the best out of it.

Hope this helps in your job search journey... All the best!๐Ÿ‘โœŒ๏ธ
โค4๐Ÿ‘2
Java for Everything: โ˜•

Java + Spring = Enterprise Applications

Java + Hibernate = Object-Relational Mapping

Java + Android = Mobile App Development

Java + Swing = Desktop GUI Applications

Java + JavaFX = Modern GUI Applications

Java + JUnit = Unit Testing

Java + Maven = Project Management

Java + Jenkins = Continuous Integration

Java + Apache Kafka = Stream Processing

Java + Apache Hadoop = Big Data Processing

Java + Microservices = Scalable Services

Best Programming Resources: https://topmate.io/coding/886839

All the best ๐Ÿ‘๐Ÿ‘
๐Ÿ‘29โค6๐Ÿ™5
๐Ÿ˜๐Ÿ˜‚
๐Ÿคฃ31๐Ÿ˜9๐Ÿ‘5๐Ÿ”ฅ1๐Ÿค”1๐Ÿคฉ1
Essential programming language for Android app development ๐Ÿ‘‡๐Ÿ‘‡

1. Java: Java has been the traditional and most widely used programming language for Android app development. It is the official language for Android development and provides a robust set of tools and libraries for building Android apps.

2. Kotlin: Kotlin is a modern, concise, and expressive programming language that has gained popularity among Android developers. It is fully interoperable with Java and offers many features that make Android app development more efficient and less error-prone.

3. C++: While not as commonly used as Java or Kotlin, C++ can be used for developing performance-critical parts of an Android app, such as game engines or graphics-intensive applications.

4. Python: Although not typically used for building full-fledged Android apps, Python can be used for scripting, automation, and data processing tasks in Android development.

5. JavaScript: JavaScript can be used in combination with frameworks like React Native or NativeScript to build cross-platform mobile apps that run on both Android and iOS devices.

Overall, Java and Kotlin are the most essential programming languages for Android app development, with Kotlin gaining popularity as a more modern and efficient alternative to Java.

Free Resources to learn App Development ๐Ÿ‘‡๐Ÿ‘‡

Developing Android Apps with Kotlin

Udemy

Android Basics in Kotlin

Advanced Android with Kotlin

Join @free4unow_backup for more free resources.

ENJOY LEARNING๐Ÿ‘๐Ÿ‘
๐Ÿ‘11๐Ÿ˜4โค1
Java Developer Interview โค
It'll gonna be super helpful for YOU

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿญ: ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐—ณ๐—น๐—ผ๐˜„ ๐—ฎ๐—ป๐—ฑ ๐—ฎ๐—ฟ๐—ฐ๐—ต๐—ถ๐˜๐—ฒ๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ
- Please tell me about your project and its architecture, Challenges faced?
- What was your role in the project? Tech Stack of project? why this stack?
- Problem you solved during the project? How collaboration within the team?
- What lessons did you learn from working on this project?
- If you could go back, what would you do differently in this project?

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฎ: ๐—–๐—ผ๐—ฟ๐—ฒ ๐—๐—ฎ๐˜ƒ๐—ฎ
- String Concepts/Hashcode- Equal Methods
- Immutability
- OOPS concepts
- Serialization
- Collection Framework
- Exception Handling
- Multithreading
- Java Memory Model
- Garbage collection

Tech Community
๐Ÿ‘‰ t.me/Java_Programming_Notes

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฏ: ๐—๐—ฎ๐˜ƒ๐—ฎ-๐Ÿด/๐—๐—ฎ๐˜ƒ๐—ฎ-๐Ÿญ๐Ÿญ/๐—๐—ฎ๐˜ƒ๐—ฎ๐Ÿญ๐Ÿณ
- Java 8 features
- Default/Static methods
- Lambda expression
- Functional interfaces
- Optional API
- Stream API
- Pattern matching
- Text block
- Modules

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฐ: ๐—ฆ๐—ฝ๐—ฟ๐—ถ๐—ป๐—ด ๐—™๐—ฟ๐—ฎ๐—บ๐—ฒ๐˜„๐—ผ๐—ฟ๐—ธ, ๐—ฆ๐—ฝ๐—ฟ๐—ถ๐—ป๐—ด-๐—•๐—ผ๐—ผ๐˜, ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ฒ๐—ฟ๐˜ƒ๐—ถ๐—ฐ๐—ฒ, ๐—ฎ๐—ป๐—ฑ ๐—ฅ๐—ฒ๐˜€๐˜ ๐—”๐—ฃ๐—œ
- Dependency Injection/IOC, Spring MVC
- Configuration, Annotations, CRUD
- Bean, Scopes, Profiles, Bean lifecycle
- App context/Bean context
- AOP, Exception Handler, Control Advice
- Security (JWT, Oauth)
- Actuators
- WebFlux and Mono Framework
- HTTP methods
- JPA
- Microservice concepts
- Spring Cloud

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฑ: ๐—›๐—ถ๐—ฏ๐—ฒ๐—ฟ๐—ป๐—ฎ๐˜๐—ฒ/๐—ฆ๐—ฝ๐—ฟ๐—ถ๐—ป๐—ด-๐—ฑ๐—ฎ๐˜๐—ฎ ๐—๐—ฝ๐—ฎ/๐——๐—ฎ๐˜๐—ฎ๐—ฏ๐—ฎ๐˜€๐—ฒ (๐—ฆ๐—ค๐—Ÿ ๐—ผ๐—ฟ ๐—ก๐—ผ๐—ฆ๐—ค๐—Ÿ)
- JPA Repositories
- Relationship with Entities
- SQL queries on Employee department
- Queries, Highest Nth salary queries
- Relational and No-Relational DB concepts
- CRUD operations in DB
- Joins, indexing, procs, function

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฒ: ๐—–๐—ผ๐—ฑ๐—ถ๐—ป๐—ด
- DSA Related Questions
- Sorting and searching using Java API.
- Stream API coding Questions

Tech Jobs and Internships
t.me/getjobss

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿณ: ๐——๐—ฒ๐˜ƒ๐—ผ๐—ฝ๐˜€ ๐—พ๐˜‚๐—ฒ๐˜€๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ผ๐—ป ๐—ฑ๐—ฒ๐—ฝ๐—น๐—ผ๐˜†๐—บ๐—ฒ๐—ป๐˜ ๐—ง๐—ผ๐—ผ๐—น๐˜€
- These types of topics are mostly asked by managers or leads who are heavily working on it, That's why they may grill you on DevOps/deployment-related tools, You should have an understanding of common tools like Jenkins, Kubernetes, Kafka, Cloud, and all.

๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ๐˜€ ๐Ÿด: ๐—•๐—ฒ๐˜€๐˜ ๐—ฝ๐—ฟ๐—ฎ๐—ฐ๐˜๐—ถ๐—ฐ๐—ฒ
- The interviewer always wanted to ask about some design patterns, it may be Normal design patterns like singleton, factory, or observer patterns to know that you can use these in coding.

PDFs and Notes ๐Ÿ“
t.me/Java_Programming_Notes

Best Programming Resources: https://topmate.io/coding/886839

All the best ๐Ÿ‘๐Ÿ‘
๐Ÿ‘15โค9
What is Encapsulation in java ?

๐Ÿ“ Encapsulation is one of the fundamental principle of object oriented programming .
๐Ÿ“ Encapsulation allows to protect the data within a class from outside entities.
๐Ÿ“ Encapsulation helps to achieve hiding the internal information from outside entities.
๐Ÿ“ Data and methods (To access the data) are bundled together within a single unit .(class)
๐Ÿ“ In Java, encapsulation is typically achieved by:
Declaring the class members as private.
Providing public getter and setter methods to access and modify the private attributes.
Note :
Let's say we have 1 private variables in a class

Example - 1:
getter & setter for primitive type private members.
private String empnm;

// get method to access the data
public String GetName() {
return empnm;
}

// set the data
public void setName(String enm) {
this.empnm = enm;
} // call the method & pass the data as param

If we can notice the getter & setter for empnm , below points we can note:
1. getter method will return the variable which is private and it is non parameterized .
2. setter method is a parameterized method which we shall use to set the value for the private member while calling , so only it is parameterized method.

Example -2 :getter & Setter for the private array :

public int[] getarr() {
return arr;
}

// Setter method to modify the private array
public void setarr(int[] brr) {
// You can add validation or other logic if needed
this.arr = brr;
}

Best Programming Resources: https://topmate.io/coding/886839

All the best ๐Ÿ‘๐Ÿ‘
๐Ÿ‘8โค4๐Ÿ”ฅ1
This will help Crack your next Java Interview even if you have 5+ years of experience!


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿญ: ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐—ณ๐—น๐—ผ๐˜„ ๐—ฎ๐—ป๐—ฑ ๐—ฎ๐—ฟ๐—ฐ๐—ต๐—ถ๐˜๐—ฒ๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ
- Please tell me about your project and its architecture, Challenges faced?
- What was your role in the project? Tech Stack of project? why this stack?
- Problem you solved during the project? How collaboration within the team?
- What lessons did you learn from working on this project?


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฎ: ๐—–๐—ผ๐—ฟ๐—ฒ ๐—๐—ฎ๐˜ƒ๐—ฎ
- String Concepts/Hashcode-Equal Methods
- Immutability
- OOP concepts
- Serialization
- Collection Framework
- Exception Handling
- Multithreading
- Java Memory Model
- Garbage collection


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฏ: ๐—๐—ฎ๐˜ƒ๐—ฎ-๐Ÿด/๐—๐—ฎ๐˜ƒ๐—ฎ-๐Ÿญ๐Ÿญ/๐—๐—ฎ๐˜ƒ๐—ฎ๐Ÿญ๐Ÿณ
- Java 8 features
- Default/Static methods
- Lambda expression
- Functional interfaces
- Optional API
- Stream API
- Pattern matching
- Text block
- Modules


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฐ: ๐—ฆ๐—ฝ๐—ฟ๐—ถ๐—ป๐—ด ๐—™๐—ฟ๐—ฎ๐—บ๐—ฒ๐˜„๐—ผ๐—ฟ๐—ธ, ๐—ฆ๐—ฝ๐—ฟ๐—ถ๐—ป๐—ด-๐—•๐—ผ๐—ผ๐˜, ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ฒ๐—ฟ๐˜ƒ๐—ถ๐—ฐ๐—ฒ, ๐—ฎ๐—ป๐—ฑ ๐—ฅ๐—ฒ๐˜€๐˜ ๐—”๐—ฃ๐—œ
- Dependency Injection/IOC, Spring MVC
- Configuration, Annotations, CRUD
- Bean, Scopes, Profiles, Bean lifecycle
- App context/Bean context
- AOP, Exception Handler, Control Advice
- Security (JWT, Oauth)
- Actuators
- WebFlux and Mono Framework
- HTTP methods
- JPA
- Microservice concepts
- Spring Cloud


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฑ: ๐—›๐—ถ๐—ฏ๐—ฒ๐—ฟ๐—ป๐—ฎ๐˜๐—ฒ/๐—ฆ๐—ฝ๐—ฟ๐—ถ๐—ป๐—ด-๐—ฑ๐—ฎ๐˜๐—ฎ ๐—๐—ฝ๐—ฎ/๐——๐—ฎ๐˜๐—ฎ๐—ฏ๐—ฎ๐˜€๐—ฒ (๐—ฆ๐—ค๐—Ÿ ๐—ผ๐—ฟ ๐—ก๐—ผ๐—ฆ๐—ค๐—Ÿ)
- JPA Repositories
- Relationship with Entities
- SQL queries on Employee department
- Queries, Highest Nth salary queries
- Relational and No-Relational DB concepts
- CRUD operations in DB
- Joins, indexing, procs, function


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿฒ: ๐—–๐—ผ๐—ฑ๐—ถ๐—ป๐—ด
- DSA Related Questions
- Sorting and searching using Java API
- Stream API coding Questions


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ ๐Ÿณ: ๐——๐—ฒ๐˜ƒ๐—ผ๐—ฝ๐˜€ ๐—พ๐˜‚๐—ฒ๐˜€๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ผ๐—ป ๐—ฑ๐—ฒ๐—ฝ๐—น๐—ผ๐˜†๐—บ๐—ฒ๐—ป๐˜ ๐—ง๐—ผ๐—ผ๐—น๐˜€
- These types of topics are mostly asked by managers or leads who are heavily working on it, That's why they may grill you on DevOps/deployment-related tools, You should have an understanding of common tools like Jenkins, Kubernetes, Kafka, Cloud, and all


๐—ง๐—ผ๐—ฝ๐—ถ๐—ฐ๐˜€ ๐Ÿด: ๐—•๐—ฒ๐˜€๐˜ ๐—ฝ๐—ฟ๐—ฎ๐—ฐ๐˜๐—ถ๐—ฐ๐—ฒ
- The interviewer always wanted to ask about some design patterns, it maybe Normal design patterns like singleton, factory, or observer patterns to know that you can use these in coding

Best Programming Resources: https://topmate.io/coding/886839

All the best ๐Ÿ‘๐Ÿ‘
๐Ÿ‘13โค6
Java in one notes.pdf
7.9 MB
Java in one notes.pdf
๐Ÿ™8โค6๐Ÿ‘6๐Ÿ‘จโ€๐Ÿ’ป2