Which of these methods initiates garbage collection?

Which of the following is the correct way to import an entire package 'pkg'?

class outputs 

    {

        public static void main(String args[]) 

        {

            int arr[] = new int [10];

             System.out.print(arr);

        } 

    }

class variable_scope 

    {

        public static void main(String args[]) 

        {

            int a;

            a= 15;

            {

         int b  = 16;

         System.out.print(x + " " + y);

            }

             System.out.println(x + " " + y);

         } 

     }

Predict the output of the following Java code:

public class Abekus {

int i = 100;

public void method(int i) { this.i = i + i * 6; }

public void display() { System.out.println(i); }

public static void main(String[] args) {

Abekus o = new Abekus();

o.method(10);

o.display();

}

}

class jj{

public static void main(String args[]){

String  str="My name is shubham Kumar rai";

String [] temp =str.split(" ");

StringBuilder sb=new StringBuilder();

 for(int i=temp.length-1;i>=0;i--){

sb.append(temp[i]+" ");

}

 System.out.println(sb);

}

}

class outputs 

    {

        public static void main(String args[]) 

        {

            int arr[][] = { {1, 2, 3}, {4 , 5, 6},{ 7, 8, 9} }; 

            int result = 0;

            for (int i = 0; i < 3; i++)

                for (int j = 0; j <  3 ; ++j)

                    result = result + arr[i][j];

            System.out.print(result /5);

        } 

    }

How to make a read-only class in Java?

import java.util.*;

    class output 

    {

        public static void main(String args[]) 

        {

            LinkedList set = new LinkedList();

            set.add(new Integer(3));

            set.add(new Integer(8));

            set.add(new Integer(5));

            set.add(new Integer(1));

   set.addFirst(new Integer(2));

   set.addLast(new Integer(9));

            Iterator i = set.iterator();

            Collections.reverse(set);

       Collections.shuffle(set);

  System.out.println(set.pollFirst()+" "+set.pollLast());

        }

    }