Java Quizz

How do we access data in an array

• using operator

• using variable

• using index

• using pointer

What will be the output of the following java program
class Demo
{
public static void main(String args[])
{
int a[] = new int[3];
System.out.println("a[0] is "+a[0]);
}
}

• compilation error

• runtime error

• 0

• 1

Which of the following is the correct way of importing an entire package ‘pkg’?

• import pkg.

• Import pkg.

• import pkg.*

• Import pkg.*

Which of the following package stores all the standard java classes?

• lang

• java

• util

• java.packages

What is the output of the following program

import java.util.*;
class Launch {
public static void main(String args[]) {
int array[] = new int [5];
for (int i = 5; i > 0; i--) {
array[5 - i] = i;
}
Arrays.sort(array);
System.out.print(Arrays.binarySearch(array, 4));
}
}

• 2

• 3

• 4

• 5