Synchronization in Java: wait() and notify

                       










Program (waitnotify.java)

class Customer {     int amount=10000;        synchronized void withdraw(int amount)    {        System.out.println("going to withdraw...");           if(this.amount<amount)       {          System.out.println("Less balance; waiting for deposit...");          try{wait();}        catch(Exception e){}         }        this.amount=this.amount-amount;        System.out.println("withdraw completed...");      }        synchronized void deposit(int amount)    {        System.out.println("going to deposit...");        this.amount=this.amount+amount;        System.out.println("deposit completed... ");        notify();      }   }      class waitnotify {     public static void main(String args[])    {        Customer c=new Customer();              new Thread()       {           public void run()          {c.withdraw(15000);}       }.start();              new Thread()       {           public void run()          {c.deposit(10000);}         }.start();         } }

  
Output:

parag@parag-Inspiron-N4010:~/Desktop/progbythread$ javac waitnotify.java  parag@parag-Inspiron-N4010:~/Desktop/progbythread$ java waitnotify going to withdraw... Less balance; waiting for deposit... going to deposit... deposit completed...  withdraw completed...