package buffer;public class BufferLock //加互斥?的???{private int value; //共享?量private boolean isEmpty = true; //value是否?空的信?量public synchronized void put(int i) //同步方法{while (!isEmpty) //?value不空?，等待{try{this.wait(); //使?用?方法的?前?程等待，即阻塞自己}catch(InterruptedException e) {}}value = i; //?value空?，value?得值isEmpty = false; //?置value?不空??notify(); //?醒其他等待?程}public synchronized int get() //同步方法{while (isEmpty) //?value空?，等待{try{this.wait();}catch(InterruptedException e) {}}isEmpty = true; //?置value?空??，并返回值notify();return value;}}class Pproduced extends Thread //?送?程?{private BufferLock buffer;public Pproduced(BufferLock buffer){this.buffer = buffer;}public void run( ){for (int i=1;i<20;i++){buffer.put( i );System.out.println("P produced : " + i );}}}class Aprocessed extends Thread //接收?程?{private BufferLock buffer;public Aprocessed(BufferLock buffer){this.buffer = buffer ;}public void run(){for (int i=1; i<20;i++)System.out.println("\t\t\t A processed : " + buffer.get()) ;}public static void main (String args[]){BufferLock buffer = new BufferLock();(new Pproduced(buffer)).start();(new Aprocessed(buffer)).start();}誰知道當(dāng)Pproduced ,去到 Pproduced 5的時(shí)候,可以叫 processed 先消費(fèi)嗎,實(shí)際上沒看過有生產(chǎn)者生產(chǎn)超過5個(gè)以上,消費(fèi)者還沒消費(fèi)請(qǐng)問,我要再多加一個(gè)消費(fèi)者,Bprocessed 如何做呢,加了有bug...希望完整解答謝謝.順序的消費(fèi)P produced : 1A processed : 1P produced : 2 B processed 2P produced : 3 A processed : 3P produced : 4 B processed 4