Java中如何正确获取线程名称？

我有这个类用于在 Java 中创建线程

package org.vdzundza.forms;

import java.awt.Graphics;
import java.awt.Graphics2D;

public class DrawThread extends Thread {
    private static final int THREAD_SLEEP = 500;
    public CustomShape shape;
    private Graphics g;

    public DrawThread(CustomShape shape, Graphics g) {
        this.shape = shape;
        this.g = g;
    }

    @Override
    public void run() {
        while (true) {
            try {
                Thread.sleep(THREAD_SLEEP);
                Graphics2D g2d = (Graphics2D) g;
                g2d.setColor(this.shape.getColor());
                g2d.fill(this.shape.getShape());
                System.out.println(String.format("execute thread: %s %s",
                        Thread.currentThread().getName(), this.getName()));
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

控制台显示以下文本作为输出

execute thread: red rectangle Thread-2
execute thread: yellow ellipse Thread-3

我创建新线程的代码：

customShapes[0] = new CustomShape(
new Rectangle2D.Float(10, 10, 50, 50), Color.RED,
    "red rectangle");
customShapes[1] = new CustomShape(new Ellipse2D.Float(70, 70, 50, 50),
Color.YELLOW, "yellow ellipse");
for (CustomShape cshape: customShapes) {
    Thread t = new Thread(new DrawThread(cshape, this.getGraphics()),
    cshape.getName());
    threads.add(t);
    t.start();
}

我的问题是：为什么Thread.currentThread().getName()返回正确的线程名称this.getName()返回另一个？

Why Thread.currentThread().getName()返回正确的线程名称this.getName()返回其他？

Your DrawThread class extends Thread但随后你可以通过调用以下命令来启动它：

new Thread(new DrawThread(...));

这是不正确的。这意味着实际创建的线程是not相同Thread from DrawThread. DrawThread应该执行Runnable and not延伸螺纹。它应该是：

public class DrawThread implements Runnable {

你的代码有效是因为Thread也是一个Runnable。因为有两个线程对象，当你调用this.getName() on the DrawThread对象不是实际运行的线程，因此其名称未正确设置。仅设置缠绕线的名称。里面的DrawThread代码，你应该调用Thread.currentThread().getName()获取正在运行的线程的真实名称。

最后，你的课程可能应该是DrawRunnable if it implements Runnable. :-)