java線程condition

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子線程先執行一段代碼，再主線程再執行一段代碼，兩個線程都迴圈執行50遍。用2個condition來實現，一個是子線程的condition，一個是主線程的condition，代碼如下：

package threadLock;import java.util.concurrent.locks.Condition;import java.util.concurrent.locks.Lock;import java.util.concurrent.locks.ReentrantLock;public class ConditionCommunication {    public static void main(String[] args) {        final Bussiness bus = new Bussiness();                //子線程開啟        new Thread(new Runnable() {            @Override            public void run() {                for (int i = 0; i < 50; ++i) {                    bus.sub();                }            }        }).start();                //主線程開啟        for (int i = 0; i < 50; ++i) {            bus.MAIN();        }    }}class Bussiness {    private boolean subShouldAble = true;    private Lock lock = new ReentrantLock();        private Condition condition1 = lock.newCondition();        private Condition condition2 = lock.newCondition();        public  void sub() {        lock.lock(); //上鎖，防止主線程執行        if (!subShouldAble) {//如果不是子線程執行，則子線程等待            try {                condition1.await();            } catch (InterruptedException e) {                e.printStackTrace();            }        }        for (int j = 0; j < 10; j++) {            System.out.println("sub squence is :" + j);        }        subShouldAble = false;        condition2.signal(); //喚醒主線程執行        lock.unlock(); //解鎖    }    public  void MAIN() {        lock.lock(); //上鎖，防止子線程執行        while (subShouldAble) { //如果是子線程執行，則主線程等待            try {                condition2.await();            } catch (InterruptedException e) {                e.printStackTrace();            }        }        for (int j = 0; j < 30; j++) {            System.out.println("main squence is :" + j);        }        subShouldAble = true;        condition1.signal(); //喚醒主線程        lock.unlock(); //解鎖    }}

 

java線程condition