Copying Array in java

In the code below I have mentioned that how can u copy an array. Try reading the comments in code, they are helpful.


class Main
{
 public static void main(String arg[])
 {
  int a[] = { 25,10,45,20,15 };
  int b[];

  b=a; //creates a copy of reference i.e both a and b are referencing to the same array !

  System.out.println();
  for(int i=0;i<a.length;i++)
   System.out.println(a[i]+"\t"+b[i]); //prints the same values of a and b because both are referring to the same array !

  a[1] = b[3] = 0; // assigned some values

  System.out.println();
  for(int i=0;i<a.length;i++)
  System.out.println( a[i]+"\t"+b[i] );

  b=a.clone();   // to create a copy of array

  a[1] = 50;     // observe the assigned values
  b[3] = 90;      // observe the assigned values

  System.out.println();
  for(int i=0;i<a.length;i++)
   System.out.println(a[i]+"\t"+b[i]);  //COPY OF ARRAY DISPLAYED
 }
}