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介绍
方法1
通过join方法去保证多线程顺序执行
join:让主线程等待子结束以后才能继续运行
方法2
ExecutorService executorService = Executors.newSingleThreadExecutor();
FIFO队列
代码
public class Test {
static Thread thread1 = new Thread(new Runnable() {
@Override
public void run() {
System.out.println("thread1");
}
});
static Thread thread2 = new Thread(new Runnable() {
@Override
public void run() {
System.out.println("thread2");
}
});
static Thread thread3 = new Thread(new Runnable() {
@Override
public void run() {
System.out.println("thread3");
}
});
static ExecutorService executorService = Executors.newSingleThreadExecutor();
public static void main(String[] args) throws InterruptedException {
// thread1
// thread2
// thread3
method1();
// thread1
// thread2
// thread3
method2();
}
private static void method2() throws InterruptedException {
thread1.start();
thread1.join();
thread2.start();
thread2.join();
thread3.start();
}
private static void method1() {
executorService.submit(thread1);
executorService.submit(thread2);
executorService.submit(thread3);
}
}