Wipro PRP - 5th June

1.Which type of loop is guaranteed to have the body execute at least once?

• for

• while

• do while

• for each

2. What keyword is used to end the current loop iteration and proceed execution with the next iteration of that loop?

• break

• continue

• end

• skip

3. What is the output of the following code snippet?

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

• 0

• 4

• 5

• 6

4. What is the output of the following program?

public class Test{

	public static void main(String []args){
		for(int i = 0; i < 10; i++){
			if(i % 2 == 0){
				continue;
			}
			System.out.println(i);
		}
	}
}

• rogram will print all even numbers between 0 to 10

• Program will print all odd numbers between 0 to 10

• Program will print all numbers between 1 to 9

• Program gives a compilation error

class HelloWorld {

public static void main(String[] args) {

int i = 70;

for(; i>60; ){

System.out.print(" "+i);

i--;

}

}

}

• 70 69 68 67 65 66 64 63 62 61

• 70 69 68 67 66 6564 63 62 61

• 61 62 63 64 65 66 67 68 69 70

• 70 68 66 64 62

public class LoopExample {

public static void main(String[] args) {

int i=12;

do{

++i;

if((i%2) == 0){

continue;

}

System.out.print(i+ " ");

}while(i<10);

}

}

• 13

• 1 2 3 4 5

• 1 3 5 7 9

• 1 3 5 7 9 11

In Java arrays are

• objects

• reference

• Primitive datatype

• none

How do you determine the number of elements in an array?

int buses[] = new int[5];

•  buses.length

• buses.length()

• buses.size

• buses.size()

How many of the following are legal declarations?

String lion [] = new String[] {"lion"};
String tiger [] = new String[1] {"tiger"};
String bear [] = new String[] {};
String cat [] = new String[0] {};

• one

• two

• Three

• four

 int arr[] = new int [5];
    System.out.print(arr);

• 0

• arr[0]

• 00000

• Class name@ hashcode in hexadecimal form