Java Inter Thread Communication With Example

class InterThreadDemo
{
    public static void main(String arg[])
    {
        final Customer c = new Customer();
        new Thread()
        {
            public void run()
            {
                c.withdraw(15000);
            }
        }.start();
        new Thread()
        {
            public void run()
            {
                c.deposit(10000);
            }
        }.start();
        new Thread()
        {
            public void run()
            {
                c.deposit(10000);
            }
        }.start();    
    }
}

class Customer
{
    int amount = 10000;

    synchronized void withdraw(int amount)
    {
        System.out.println("Available Balance " + this.amount);
        System.out.println("Going to withdraw." + amount);

        if (this.amount < amount)
        {
            System.out.println("Insufficient Balance waiting for deposit.");
            try
            {
                wait();
            } catch (Exception e)
            {
                System.out.println("Interruption Occured");
            }
        }
        this.amount -= amount;
        System.out.println("Detected amaount: " + amount);
        System.out.println("Balance amount : " + this.amount);
    }

    synchronized void deposit(int amount)
    {
        System.out.println("Going to deposit " + amount);
        this.amount += amount;
        System.out.println("Available Balance " + this.amount);
        System.out.println("Transaction completed.\n");
        notify();
    }
}