java多线程通信同步之多Condition通信

public class ThreeConditionCommunication {

/**
* @param args
*/
public static void main(String[] args) {

final Business business = new Business();
new Thread(
new Runnable() {

@Override
public void run() {

for(int i=1;i<=50;i++){
business.sub2(i);
}

}
}
).start();

new Thread(
new Runnable() {

@Override
public void run() {

for(int i=1;i<=50;i++){
business.sub3(i);
}

}
}
).start();

for(int i=1;i<=50;i++){
business.main(i);
}

}

static class Business {
Lock lock = new ReentrantLock();
Condition condition1 = lock.newCondition();
Condition condition2 = lock.newCondition();
Condition condition3 = lock.newCondition();
private int shouldSub = 1;
public  void sub2(int i){
lock.lock();
try{
while(shouldSub != 2){
try {
condition2.await();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
for(int j=1;j<=10;j++){
System.out.println("sub2 thread sequence of " + j + ",loop of " + i);
}
shouldSub = 3;
condition3.signal();
}finally{
lock.unlock();
}
}

public  void sub3(int i){
lock.lock();
try{
while(shouldSub != 3){
try {
condition3.await();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
for(int j=1;j<=20;j++){
System.out.println("sub3 thread sequence of " + j + ",loop of " + i);
}
shouldSub = 1;
condition1.signal();
}finally{
lock.unlock();
}
}

public  void main(int i){
lock.lock();
try{
while(shouldSub != 1){
try {
condition1.await();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
for(int j=1;j<=100;j++){
System.out.println("main thread sequence of " + j + ",loop of " + i);
}
shouldSub = 2;
condition2.signal();
}finally{
lock.unlock();
}
}

}
}

整理自教程