Java Basics Interview Questions

    Question 1: JAVA - Variable Declaration Basics

    Which of the following is a valid variable declaration in Java?

    Question 2: JAVA - Data Types

    Which of the following is a primitive data type in Java?

    Question 3: JAVA - Type Casting

    What will happen in the following code?

    double d = 9.7;
int x = (int) d;
System.out.println(x);

    Question 4: JAVA - if-else Statement

    What will be the output of the code?

    int a = 5;
if(a > 10) {
    System.out.println("Big");
} else {
    System.out.println("Small");
}

    Question 5: JAVA - Switch Statement

    What will this code print?

    int day = 2;
switch(day) {
    case 1: System.out.println("Mon"); break;
    case 2: System.out.println("Tue"); break;
    default: System.out.println("Other");
}

    Question 6: JAVA - While Loop

    How many times will this loop run?

    int i = 1;
while(i < 4) {
    System.out.println(i);
    i++;
}

    Question 7: JAVA - For Loop Example

    What will be the output?

    for(int i = 0; i < 5; i += 2) {
    System.out.print(i + " ");
}

    Question 8: JAVA - Do While Loop

    What will be the output?

    int n = 5;
do {
    System.out.println(n);
    n++;
} while(n < 5);

    Question 9: JAVA - Break Statement

    What will be the output?

    for(int i = 1; i <= 5; i++) {
    if(i == 3) break;
    System.out.print(i + " ");
}

    Question 10: JAVA - Continue Statement

    What will be printed?

    for(int i = 1; i <= 4; i++) {
    if(i == 2) continue;
    System.out.print(i + " ");
}