java--thread 生产者消费者问题

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public class testsyncthread {

  public static void main(String [] args)
  {
   Quequ q= new Quequ();
   Producer p = new Producer(q);
    Customer c = new Customer(q);
    p.start();
    c.start();
  }
}

class Producer extends Thread
{
Quequ qu;
public Producer(Quequ qu) {
  // TODO Auto-generated constructor stub
  this.qu=qu;
}
public void run()
{
  int i=0;
  for(;i<10;i++)
  {
   qu.put(i);
   System.out.println("put " +i);
  }
}
}

class Customer extends Thread
{
Quequ qu;
public Customer(Quequ qu) {
  // TODO Auto-generated constructor stub
  this.qu=qu;
}
public void run()
{
  int i=0;
  while(true)
  {
   i=qu.get();
   System.out.println("get "+i);
  }
}
}
class Quequ
{
int value;
boolean isfull =false;
public synchronized void put(int value)
{

  if(!isfull)
  {
   this.value=value;
   isfull = true;
   notify();
  }
  try
  {
   wait();
  }
  catch(Exception e)
  {

  }
}
public synchronized int get()
{
  if(!isfull)
  {
   try
   {
    wait();
   }
   catch(Exception e)
   {

   }
  }
  else
  {
   notify();
   isfull = false;

  }
  return value;
}
}