1:/* 
   2:Before method1, acc is :
   3:Name: Charles
   4:Saving: 1000
   5:
   6:Aafter method1, acc is :
   7:Name: Charles
   8:Saving: 1000
   9:
  10:Before method2, acc is :
  11:Name: Charles
  12:Saving: 1000
  13:
  14:Aafter method2, acc is :
  15:Name: Charles
  16:Saving: 2000
  17:*/
  18:public class PassByReferTest {
  19:    public static void main(String[] args) {
  20:        BankAccount acc = new BankAccount("Charles", 1000);
  21:        System.out.println("Before method1, acc is :\n" + acc.showInfo());
  22:        method1(acc);
  23:        System.out.println();
  24:        System.out.println("After method1, acc is :\n" + acc.showInfo());
  25:        System.out.println();
  26:        System.out.println("Before method2, acc is :\n" + acc.showInfo());
  27:        method2(acc);
  28:        System.out.println();
  29:        System.out.println("After method2, acc is :\n" + acc.showInfo());
  30:        
  31:    }
  32:    
  33:    public static void method1(BankAccount a) {
  34:        a = new BankAccount("Amy");
  35:    }
  36:    
  37:    public static void method2(BankAccount a) {
  38:        a.deposit(1000);
  39:    }
  40:}