java 获取线程id

如何获取正在运行的线程的ID？

解决方法

下面的示例演示如何使用getThreadId() 方法一个正在运行线程的ID。

public class Main extends Object implements Runnable {
  private ThreadID var;

  public Main(ThreadID v) {
    this.var = v;
  }

  public void run() {
    try {
      print("var getThreadID =" + var.getThreadID());
      Thread.sleep(2000);
      print("var getThreadID =" + var.getThreadID());
    } catch (InterruptedException x) {
    }
  }

  private static void print(String msg) {
    String name = Thread.currentThread().getName();
    System.out.println(name + ": " + msg);
  }

  public static void main(String[] args) {
    ThreadID tid = new ThreadID();
    Main shared = new Main(tid);

    try {
      Thread threadA = new Thread(shared, "threadA");
      threadA.start();

      Thread.sleep(500);

      Thread threadB = new Thread(shared, "threadB");
      threadB.start();

      Thread.sleep(500);

      Thread threadC = new Thread(shared, "threadC");
      threadC.start