Quiz Instructions

What is Programming?

Programming is the process of writing instructions in a language that a computer can understand to perform a task.

Section 1: Basics (Q1-Q4)

Question 1

Question 2

Question 3

Question 4

Section 2: Data Types (Q5-Q6)

Question 5

Question 6

Section 3: Operators (Q7-Q9)

Question 7

Question 8

Question 9

Section 4: IDE & Tools (Q10-Q11)

Question 10

Question 11

Section 5: I/O & Compilation (Q12-Q15)

Question 12

Question 13

Question 14

Question 15

Section 6: Advanced Concepts (Q16-Q20)

Question 16

Question 17

Question 18

Question 19

Question 20

Complete Answer Key

Quick Revision Notes

Quick Tips for MCQs

Scoring Guide

Did You Know?

Sample Programs (Practice)

Program 1: Hello World

public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

Program 2: Add Two Numbers

import java.util.Scanner;

public class AddNumbers {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter first number: ");
        int a = sc.nextInt();
        System.out.print("Enter second number: ");
        int b = sc.nextInt();
        int sum = a + b;
        System.out.println("Sum = " + sum);
    }
}

Frequently Asked Questions

Q1. How do I remember all the operators?

Practice! Write small programs using each operator. Create flashcards for quick review.

Q2. What's the difference between int and double?

int stores whole numbers (like 5, 100). double stores decimal numbers (like 5.5, 99.99).

Q3. Why does 10/3 give 3, not 3.33?

Because both are integers. Integer division truncates the decimal. Use 10.0/3 or 10/3.0 to get 3.33.

Q4. What if I forget to import Scanner?

You'll get a compilation error. Always add import java.util.Scanner; at the top.

Q5. Should I always start class name with uppercase?

Yes! It's a Java convention (PascalCase). Examples: HelloWorld, StudentName.

Q6. What's the difference between = and ==?

= assigns a value (x = 5). == compares two values (x == 5).

Q7. How can I improve my score?

Practice more programs, understand concepts thoroughly, and review your mistakes.

Q8. Is BlueJ the only IDE for Java?

No! There are many: IntelliJ IDEA, Eclipse, NetBeans, VS Code. BlueJ is best for beginners.