class AThread extends Thread {
@Override
public void run() {
System.out.println("AThread:" + Thread.currentThread().getName());
super.run();
}
}
方式二、实现Runnable接口，复写run()方法
class BThread implements Runnable {
@Override
public void run() {
System.out.println("BThread:" + Thread.currentThread().getName());
}
}
方式三、实现Callable接口，复写call()方法
class CThread implements Callable二、线程执行
package ThreadStudy;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
public class T1 {
public static void main(String[] args) throws Exception {
// 方式一实现
AThread t1 = new AThread();
t1.start();
// 方式二实现（一）
Thread t2 = new Thread(new BThread());
t2.start();
// 方式二实现（二）：匿名内部类
Thread t3 = new Thread(new Runnable() {
@Override
public void run() {
System.out.println("main:" + Thread.currentThread().getName());
}
});
t3.start();
// 方式三实现（一）:线程池中执行Callable线程获取返回值
ExecutorService exec = Executors.newSingleThreadExecutor();
CThread ct1 = new CThread();
Future f1 = exec.submit(ct1);
System.out.println("方式三实现（一）:" + f1.get());
// 方式三实现（二）:FutureTask类中执行Callable线程获取返回值
CThread ct2 = new CThread();
FutureTask
三、Runnable执行成功后指定返回值
| 可以指定任意类型的返回结果 |
代码实现
package ThreadStudy;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
public class TestTmp {
public static void main(String[] args) throws Exception {
ExecutorService exec = Executors.newSingleThreadExecutor();
Future future = exec.submit(new Runnable() {
@Override
public void run() {
System.out.println("Runnable开始执行");
}
}, "success");
System.out.println("获取Runnable执行之后的返回结果：" + future.get());
}
}
四、Callable与Runnable区别：
| Runnable | Callable | |
| 1、复写方法不同 | run() | call() |
| 2、是否带返回值 | 否 | 是 |
| 3、执行方式不同 | 既能在线程池中执行 又能在Thread类中执行 | 只能放在线程池中执行 |
