public class Copy1
{
   public static void main(String[] args)
   {
 
      double a = 3.14;                 // Original variable
      double b;                        // The copy

      b = a;          // b is a copy of a 

      System.out.println("a = " + a);
      System.out.println("b = " + b);

      b = b+10;        // Update the copy must not change the original

      System.out.println("Values after updating the copy b:");
      System.out.println("a = " + a); 
      System.out.println("b = " + b);
   }
}