Java学习，多线程

JAVA中，从语言层次上就支持多线程，多线程的同步和互斥可以使用wait 和 notify来解决。需要注意的是wait和notify所对应的等待队列必须是同一对象的。现在学习多线程对我来说还是太早了，先了解这么多吧！

生产者消费者问题：

class  Test{     public   static   void  main(String[] args)    {        Queue q = new  Queue();        Producer p = new  Producer(q);        Consumer c = new  Consumer(q);        p.start();        c.start();    }} class  Producer  extends  Thread{    Queue q;    Producer(Queue q)    {         this .q = q;    }     public   void  run()    {         for ( int  i = 0 ;i < 10 ;i ++ )        {            q.put(i);            System.out.println( " Producer put  " + i);        }    }} class  Consumer  extends  Thread{    Queue q;    Consumer(Queue q)    {         this .q = q;    }     public   void  run()    {         while ( true )        {            System.out.println( " Consumer get  " + q.get());        }    }} class  Queue{     int  value;     boolean  bFull = false ;     public   synchronized   void  put( int  i)    {         if ( ! bFull)        {            value = i;            bFull = true ;            notify();        }         try         {            wait();        }         catch (Exception e)        {            e.printStackTrace();        }                }     public   synchronized   int  get()    {         if ( ! bFull)        {             try             {                wait();            }             catch (Exception e)            {                e.printStackTrace();            }        }        bFull = false ;        notify();         return  value;    }}