// 用 API 给线程起名
1 public class MyThreadApi extends Thread {
2 @Override
3 public void run(){
4 for (int i = 0; i < 5; i++) {
5 System.out.println(Thread.currentThread() + "子线程：" + i);
6 }
7 }
8 }
1 1 public static void main(String[] args) {
2 2 Thread t1 = new MyThreadApi();
3 3 t1.setName("一号");
4 4 t1.start();
5 5 System.out.println(t1.getName());
6 6
7 7 t2.setName("二号");
8 8 t2.start();
9 9 System.out.println(t2.getName());
10 10
11 11 // 哪个线程执行它，就得到那个线程对象
12 12 Thread m = Thread.currentThread();
13 13 System.out.println(m.getName());
14 14
15 15 for (int i = 0; i < 5; i++) {
16 16 System.out.println("主线程：" + i);
17 17 }
18 18 }
1 // 用构造器给线程起名
2 public class MyThreadApi extends Thread {
3 public MyThreadApi() {
4 }
5
6 public MyThreadApi(String name) {
7 // 为当前线程起名，给父类的有参构造器初始化名称
8 super(name);
9 }
10
11 @Override
12 public void run(){
13 for (int i = 0; i < 5; i++) {
14 System.out.println(Thread.currentThread() + "子线程：" + i);
15 }
16 }
17 }
18
19 public static void main(String[] args) {
20 Thread t1 = new MyThreadApi("1号");
21 t1.start();
22 System.out.println(t1.getName());
23
24 Thread t2 = new MyThreadApi("2号");
25 t2.start();
26 System.out.println(t2.getName());
27
28 // 哪个线程执行它，就得到那个线程对象
29 Thread m = Thread.currentThread();
30 m.setName("main主线程");
31
32 for (int i = 0; i < 5; i++) {
33 System.out.println(m.getName() + i);
34 }
35 }
