Third Year Placement Training Revision Test

Number of primitive data types in Java are?

• 6

• 7

• 8

• 9

Find the output of the following code.

int Integer = 24;

char String = 'I';

System.out.print(Integer);

System.out.print(String);

• Compile error

• Throws exception

• I

• 24 I

Find the output of the following program.

public class Solution {

public static void main(String[] args) {

short x = 10;

x = x * 5;

System.out.print(x); } }

• 50

• 10

• Compile error

• Syntax Error

How many times will 'Interview' be printed?

int count = 101;

do {

System.out.println('Interview');

count++;

} while (count < 10);

• 8

• 9

• 10

• 1

Find the output:

int n = 12345;

int r = 0;

while (n > 0) {

r = n % 10;

System.out.println(r); }

• 54321

• 12345

• Compile Error

• Infinite Loop

Consider the following user inputs one by one as 10, java for the below program:

import java.util.Scanner;

public class extra1 {

public static void main(String[] args) {

Scanner s = new Scanner(System.in);

int a = s.nextInt();

System.out.println(a); } }

• 10.0, Error

• 10, Error

• Java, 10

• 10, java

What is the purpose of the PATH environment variable in Java?

• To locate Java libraries

• To store Java bytecode

• To locate the Java compiler

• To optimize Java code

Which datatype would be best for storing a person's age in Java?

• int

• double

• long

• float

What is the result of this operation in Java: (int)(7.9)?

• 7

• 7.9

• 8

• Syntax Error

Identify the error in this code:

for(int i = 0; i <= 5; i++) {

System.out.println(i); }

System.out.println(i);

• Syntax error outside loop

• No error

• Variable i not accessible outside loop

• Infinite loop