Java Collections Framework MCQs Questions | Java Program MCQs

import java.util.*;
class Array 
{
    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));
    }
}

class Output 
{
    public static void main(String args[]) 
    {
        ArrayList obj = new ArrayList();
        obj.add("A");
        obj.add("D");
        obj.ensureCapacity(3);
        obj.trimToSize();
        System.out.println(obj.size());
     }      
}