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LESSON 16: Java Operator Precedence > Operator precedence determines the order in which the operators in an expression are evaluated. > the operator with the highest precedence is operated first. > the multiplication is performed before subtraction > Example:…
LESSON 17: EXCEPTION HANDLING IN JAVA
🖇 Exception handling is one of the most important feature of java programming that allows us to handle the runtime errors caused by exceptions.
✂️An Exception is an unwanted event that interrupts the normal flow of the program.
Java try and catch
The try statement allows you to define a block of code to be tested for errors while it is being executed.
The catch statement allows you to define a block of code to be executed, if an error occurs in the try block.
public class Main {
public static void main(String[ ] args) {
try {
int[] myNumbers = {1, 2, 3};
System.out.println(myNumbers[10]);//this num is not found in the array
} catch (Exception e) {
System.out.println("Something went wrong.");
}
}
}
THERE ARE 2 PRIMARY EXCEPTION TYPES:
1️⃣ Checked Exception
2️⃣ Unchecked Exception
Contact_bot » https://t.me/LearnToCode_bot
🖇 Exception handling is one of the most important feature of java programming that allows us to handle the runtime errors caused by exceptions.
✂️An Exception is an unwanted event that interrupts the normal flow of the program.
Java try and catch
The try statement allows you to define a block of code to be tested for errors while it is being executed.
The catch statement allows you to define a block of code to be executed, if an error occurs in the try block.
public class Main {
public static void main(String[ ] args) {
try {
int[] myNumbers = {1, 2, 3};
System.out.println(myNumbers[10]);//this num is not found in the array
} catch (Exception e) {
System.out.println("Something went wrong.");
}
}
}
THERE ARE 2 PRIMARY EXCEPTION TYPES:
1️⃣ Checked Exception
2️⃣ Unchecked Exception
Contact_bot » https://t.me/LearnToCode_bot
Q1:When an improper or erroneous argument is supplied to a method, ——— exception occurs.
Anonymous Quiz
16%
ArrayIndexOutOfBoundsException
8%
NullPointerException
66%
IllegalArgumentException
10%
NumberFormatException
👏1
Q2:When you try to retrieve an object using a reference variable whose current value is empty, you'll get__________ exception.
Anonymous Quiz
66%
NullPointerException
12%
ArrayIndexOutOfBoundsException
16%
IllegalArgumentException
6%
NumberFormatException
👍1🤔1
Introduction-to-Algorithms-Third-Edition-booksfree.org_.pdf
5.4 MB
💻Introduction to Algorithms- MIT
👍1
Termination of Recursive program is achieved by :___
Anonymous Poll
36%
decreasing the parameter to base case
24%
solving smaller version of the same problem
39%
recursive case equals base case
30%
All
5%
None
👏1
Forwarded from Back End Developemnt
From the languages given, which one is back-end coding language
Anonymous Quiz
38%
Javascript
8%
React
31%
SQL
10%
JQuery
13%
All
👍4👏1
This method determines where an element will be displayed on the screen and its size
Anonymous Quiz
14%
setParameter
28%
setSize
44%
setBounds
14%
setMenu
which of the following is reqiured before adding textFields, labels , buttons or tool tips
Anonymous Quiz
13%
JButtons
60%
JFrame
6%
JTextArea
14%
JtextField
8%
None
Forwarded from Front End Development
which of the following correctly adds a listener to a button?
Anonymous Quiz
12%
button.addAction(new Action() { }
55%
button.addActionListener(new ActionListener() { }
10%
button.addAction(new Action() { }
17%
ActionListener = button.addAction(new Action() { }
4%
addActionListener(new ItemListener) {}
2%
None
Forwarded from Front End Development
Identify the unchecked Exception from the given choices
Anonymous Quiz
39%
NullPointerException
19%
SQLException
23%
InterruptException
11%
IOException
8%
None
Forwarded from Front End Development
identify the checked Exception
Anonymous Quiz
32%
ArithmeticException
35%
FileNotFoundException
17%
ClassCastException
10%
ArrayStoreException
6%
none
image_2022-08-06_08-15-30.png
114.2 KB
Best Inetegerated development Environment(IDE) to develop python:
1. Pydev
📥 official website https://www.eclipse.org/; http://pydev.org/
2.Pycharm
📥official website https://www.jetbrains.com/pycharm/
3. Sublime Text - python text editor
📥official website http://www.sublimetext.com/
4. Visual Studio Code - my favorite😆❤️
📥official website https://code.visualstudio.com
5. Atom
📥 official website https://atom.io/
🔱‼️these are some of the IDEs and text editors for python. there many others too used by different programmers.
📌join and share with_your_friends
1. Pydev
📥 official website https://www.eclipse.org/; http://pydev.org/
2.Pycharm
📥official website https://www.jetbrains.com/pycharm/
3. Sublime Text - python text editor
📥official website http://www.sublimetext.com/
4. Visual Studio Code - my favorite😆❤️
📥official website https://code.visualstudio.com
5. Atom
📥 official website https://atom.io/
🔱‼️these are some of the IDEs and text editors for python. there many others too used by different programmers.
📌join and share with_your_friends
👍3
Harvard CS109A #DataScience course materials — huge collection free & open!
1. Lecture notes
2. R code, #Python notebooks
3. Lab material
4. Advanced sections
and more ...
https://harvard-iacs.github.io/2019-CS109A/pages/materials.html
1. Lecture notes
2. R code, #Python notebooks
3. Lab material
4. Advanced sections
and more ...
https://harvard-iacs.github.io/2019-CS109A/pages/materials.html