操作线程的方法

try {
    Thread.sleep(2000);
} catch(InterruptedException e) {
    e.printStackTrace();
}

import java.awt.*;
import java.util.Random;
import javax.swing.*;

public class SleepMethodTest extends JFrame {
	private static Color[] color = { Color.BLACK, Color.BLUE, Color.CYAN, Color.GREEN, Color.ORANGE, Color.YELLOW,
			Color.RED, Color.PINK, Color.LIGHT_GRAY }; // 定义颜色数组
	private static final Random rand = new Random(); // 创建随机对象

	private static Color getC() { // 获取随机颜色值的方法
		return color[rand.nextInt(color.length)];
	}

	public SleepMethodTest() {
		Thread t = new Thread(new Runnable() { // 创建匿名线程对象
			int x = 30; // 定义初始坐标
			int y = 50;

			public void run() { 
				while (true) { // 无限循环
					try {
						Thread.sleep(100); // 线程休眠0.1秒
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
					Graphics graphics = getGraphics(); // 获取组件绘图上下文对象
					graphics.setColor(getC()); // 设置绘图颜色
					graphics.drawLine(x, y, 100, y++); // 绘制直线并递增垂直坐标
					if (y >= 80) {
						y = 50;
					}
				}
			}
		});
		t.start(); // 启动线程
	}

	public static void main(String[] args) {
		init(new SleepMethodTest(), 100, 100);
	}

	public static void init(JFrame frame, int width, int height) { // 初始化程序界面的方法
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(width, height);
		frame.setVisible(true);
	}
}

import java.awt.BorderLayout;
import javax.swing.*;

public class JoinTest extends JFrame {
	private Thread threadA; // 定义两个线程
	private Thread threadB;
	private JProgressBar progressBar = new JProgressBar(); // 定义两个进度条组件
	private JProgressBar progressBar2 = new JProgressBar();

	public static void main(String[] args) {
		JoinTest test = new JoinTest();
		test.setVisible(true);
	}

	public JoinTest() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(200, 200, 200, 100);
		getContentPane().add(progressBar, BorderLayout.NORTH); // 将进度条设置在窗体最北面
		getContentPane().add(progressBar2, BorderLayout.SOUTH); // 将进度条设置在窗体最南面
		progressBar.setStringPainted(true); // 设置进度条显示数字字符
		progressBar2.setStringPainted(true);
		// 使用匿名内部类形式初始化Thread实例
		threadA = new Thread(new Runnable() {
			int count = 0;

			public void run() { // 重写run()方法
				while (true) {
					progressBar.setValue(++count); // 设置进度条的当前值
					try {
						Thread.sleep(100); // 使线程A休眠100毫秒
						threadB.join(); // 使线程B调用join()方法
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
		});
		threadA.start(); // 启动线程A
		threadB = new Thread(new Runnable() {
			int count = 0;

			public void run() {
				while (true) {
					progressBar2.setValue(++count); // 设置进度条的当前值
					try {
						Thread.sleep(100); // 使线程B休眠100毫秒
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
					if (count == 100) // 当count变量增长为100时
						break; // 跳出循环
				}
			}
		});
		threadB.start(); // 启动线程B
	}
}

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;

public class InterruptedSwing extends JFrame {

	public static void main(String[] args) {
		init(new InterruptedSwing(), 100, 100);
	}

	public InterruptedSwing() {
		JProgressBar progressBar = new JProgressBar(); // 创建进度条
		getContentPane().add(progressBar, BorderLayout.NORTH); // 将进度条放置在窗体合适位置
		JButton button = new JButton("停止");
		getContentPane().add(button, BorderLayout.SOUTH);
		progressBar.setStringPainted(true); // 设置进度条上显示数字
		Thread t = new Thread(new Runnable() {
			int count = 0;

			public void run() {
				while (true) {
					progressBar.setValue(++count); // 设置进度条的当前值
					try {
						Thread.sleep(100); // 使线程休眠100毫秒
					} catch (InterruptedException e) { // 捕捉InterruptedException异常
						System.out.println("当前线程序被中断");
						break;
					}
				}
			}
		});

		button.addActionListener(new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent e) {
				t.interrupt(); // 中断线程
			}
		});
		t.start(); // 启动线程
	}

	public static void init(JFrame frame, int width, int height) {
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(width, height);
		frame.setVisible(true);
	}
}