WAP To print Subtraction of array elements

/*WAP To print Subtraction of array elements*/
/*Save file as: Array_Subtraction.java*/

import java.lang.*;
class Array
{
        int l[],m[],n[];
        Array()
        {
        l=new int[] {1,2,3,4,5,6,7,8,9};
 m=new int[] {1,2,3,4,5,6,7,8,9};
 n=new int[9];
        }
        void display()
        {
        for(int i=0;i<9;i++)
        {
  n[i]=l[i]-m[i];
  System.out.print("  "+n[i]);
               
        }
        }
}
class Array_Subtraction
{
        public static void main(String arg[])
        {
        Array a1=new Array();
        a1.display();
 }
}