Java Basic Programs for Beginners

Java Basic Programs for Beginners - Important Points

11.		Which of the following is not a control structure in Java?

A. if

B. for

C. switch

D. call

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Answer: option d

Explanation:

call is not a control structure in JavIt is not a keyword or part of the language syntax.

12.		What is the output of the following program? public class Main { public static void main(String[] args) { int x = 5; int y = 2; int z = x / y; System.out.println(z); } }

12.

What is the output of the following program?

public class Main {
public static void main(String[] args) {
int x = 5;
int y = 2;
int z = x / y;
System.out.println(z);
}
}

A. 2.5

B. 2

C. 3

D. 5

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Answer: option b

Explanation:

The / operator performs integer division when both operands are integers, so the result is 2 in this case.

13.		What is the output of the following program? public class Main { public static void main(String[] args) { int x = 5; int y = 2; System.out.println(x > y && y < x); } }

13.

What is the output of the following program?

public class Main {
public static void main(String[] args) {
int x = 5;
int y = 2;
System.out.println(x > y && y < x);
}
}

A. 1

B. 0

C. Compile error

D. Runtime error

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Answer: option a

Explanation:

The && operator performs logical AND on the two operands, which is true in this case.

14.		Which of the following is a valid way to declare and initialize an array of integers in Java?

A. int[] arr = new int[5];

B. int arr[5] = {1, 2, 3, 4, 5};

C. int[] arr = {1, 2, 3, 4, 5};

D. int arr[] = new int[]{1, 2, 3, 4, 5};

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Answer: option c

Explanation:

Option C is a valid way to declare and initialize an array of integers in Java.

15.		What is the output of the following program? public class Main { public static void main(String[] args) { int x = 5; int y = 2; System.out.println(x > y \|\| y < x); } }

15.

What is the output of the following program?

public class Main {
public static void main(String[] args) {
int x = 5;
int y = 2;
System.out.println(x > y || y < x);
}
}

A. 1

B. 0

C. Compile error

D. Runtime error

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Answer: option a

Explanation:

The || operator performs logical OR on the two operands, which is true in this case.

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