class J10E03
{
   public static void main(String[] args)
   {
      int[] arrayA = {2,3,4};
      int[] arrayB = {20, 30, 40};
      int j = 5;
      E03 tester = new E03();

      System.out.println(
         "Before tester.fun:" +
         "\n   j = " + j +
         "\n   arrayA[0] = " + arrayA[0] +
         "\n   arrayB[0] = " + arrayB[0]);

      tester.fun(j, arrayA[0], arrayB);

      System.out.println(
         "\nAfter tester.fun:" +
         "\n   j = " + j +
         "\n   arrayA[0] = " + arrayA[0] +
         "\n   arrayB[0] = " + arrayB[0]);
   }
}

class E03
{
   public void fun(int x, int y, int[] a)
   {
      x = 100;
      y = 200;
      a[0] = 300;
   }
}