方案一：
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* created by cjy
* desc: lock and condition
*/
public class Test100_01 {
private static Lock lock = new ReentrantLock();
private static Condition condition1 = lock.newCondition();
private static Condition condition2 = lock.newCondition();
public static void main(String[] args) {
// thread 1
Thread t1 = new Thread(() -> {
for (int i = 1; i <= 999; i += 2) {
lock.lock();
try {
System.out.println("current:" + i);
condition1.await();
condition2.signal();
} catch (InterruptedException e) {
e.printStackTrace();
}
lock.unlock();
}
});
// thread 2
Thread t2 = new Thread(() -> {
for (int i = 2; i <= 1000; i += 2) {
lock.lock();
try {
System.out.println("current:" + i);
condition1.signal();
condition2.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
lock.unlock();
}
});
t1.setPriority(Thread.MAX_PRIORITY);
t1.start();
t2.start();
}
}
方案二：
/**
* created by cjy
* desc: synchronized wait notify
*/
public class Test100_02 {
private static Object object = new Object();
private static boolean isFlag = false;
public static void main(String[] args) {
Thread t1 = new Thread(() -> {
for (int i = 1; i <= 999; i+=2) {
synchronized (object) {
if (!isFlag) {
System.out.println("current:" + i);
isFlag = true;
try {
object.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
object.notify();
}
}
}
});
Thread t2 = new Thread(() -> {
for (int i = 2; i <= 1000; i+=2) {
synchronized (object) {
if (isFlag) {
isFlag = false;
System.out.println("current:" + i);
object.notify();
try {
object.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
});
t1.setPriority(Thread.MAX_PRIORITY);
t1.start();
t2.start();
}
}