求大神帮小弟看看问题所在！

[Kearone]

程序能够运行，但是打开附件的秒表点击按钮没有反应，单独一个秒表程序可以。请大神看看问题出在哪里，帮忙修改一下，感激不尽

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class NotePad extends JFrame {
	JTextArea jta;

	class newl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			jta.setText("");
		}
	}

	class openl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			JFileChooser jf = new JFileChooser();
			jf.showOpenDialog(NotePad.this);

		}

	}

	// 保存文件的监听
	class savel implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			JFileChooser jf = new JFileChooser();
			jf.showSaveDialog(NotePad.this);

		}
	}

	// 退出记事本的监听
	class exitl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			System.exit(0);// 退出
		}
	}

	class timerl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			new TestTimer() ;// 秒表
		}
	}

	class tipl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			JOptionPane.showMessageDialog(null, "程序 信息");
		}
	}
	// 构造函数
	public NotePad() {
		jta = new JTextArea("", 24, 40);
		JScrollPane jsp = new JScrollPane(jta);
		JMenuBar jmb = new JMenuBar();
		JMenu mFile = new JMenu("文件");
		JMenu mStuff = new JMenu("附件");
		JMenu  mHelp= new JMenu("帮助");

		JMenuItem mNew = new JMenuItem("新建");
		mNew.addActionListener(new newl());
		mFile.add(mNew);

		JMenuItem mOpen = new JMenuItem("打开");
		mOpen.addActionListener(new openl());
		mFile.add(mOpen);

		JMenuItem mSave = new JMenuItem("保存");
		mSave.addActionListener(new savel());
		mFile.add(mSave);

		mFile.addSeparator(); // 添加分割线
		
		JMenuItem mExit=new JMenuItem("退出");
		  mExit.addActionListener(new exitl());
		  mFile.add(mExit);
		  						//
		JMenuItem mTime=new JMenuItem("秒表");
		  mTime.addActionListener(new timerl());
		  mStuff.add(mTime);
		  
		JMenuItem mTi=new JMenuItem("关于");
		  mTi.addActionListener(new tipl());
		  mHelp.add(mTi);

		
		jmb.add(mFile);
		jmb.add(mStuff);
		jmb.add(mHelp);

		setJMenuBar(jmb);

		setTitle("课程设计  ");
		getContentPane().add(jsp);
		setSize(634, 500);
		setVisible(true);
	}

// 主函数，程序入口点
	public static void main(String s[]) {
		new NotePad();
	}

}

/*.........................................................*/
class TestTimer extends JFrame implements ActionListener, Runnable {
	private static TestTimer obj;
	private JButton btnStart;
	private JButton btnPause;
	private JButton btnResume;
	private JButton btnStop;
	private JLabel lblTime;
	private static Thread th;
	private long count;

	public TestTimer() {
		super("秒表");
		btnStart = new JButton("开始");
		btnPause = new JButton("暂停");
		btnResume = new JButton("继续");
		btnStop = new JButton("停止");
		lblTime = new JLabel("00:00:00.000");
		this.setLayout(new FlowLayout());
		this.add(btnStart);
		this.add(btnPause);
		this.add(btnResume);
		this.add(btnStop);
		this.add(lblTime);
		btnStart.addActionListener(this);
		btnPause.addActionListener(this);
		btnResume.addActionListener(this);
		btnStop.addActionListener(this);
		this.setSize(167, 144);
		this.setResizable(false);
		this.setVisible(true);
	}

	public static void main(String[] args) {
		obj = new TestTimer();
	}


	public void actionPerformed(ActionEvent e) {
		JButton btn = (JButton) e.getSource();
		if (btn.getText().equals("开始")) {
			th = new Thread(obj);
			count = 0;
			th.start();
		} else if (btn.getText().equals("暂停")) {
			th.suspend();
		} else if (btn.getText().equals("继续")) {
			th.resume();
		} else if (btn.getText().equals("停止")) {
			th.stop();
		}
	}

	public void run() {
		while (true) {
			int ms, seconds, minutes, hours;
			String msg = "";
			hours = (int) (count / 3600000);
			minutes = (int) ((count - hours * 3600000) / 60000);
			seconds = (int) ((count - hours * 3600000 - minutes * 60000) / 1000);
			ms = (int) (count % 1000);
			if (hours < 10) {
				msg += "0" + hours + ":";
			} else {
				msg += hours + ":";
			}
			if (minutes < 10) {
				msg += "0" + minutes + ":";
			} else {
				msg += minutes + ":";
			}
			if (seconds < 10) {
				msg += "0" + seconds + ":";
			} else {
				msg += seconds + ":";
			}
			if (ms < 10) {
				msg += "00" + ms;
			} else if (ms < 100) {
				msg += "0" + ms;
			} else {
				msg += ms;
			}
			lblTime.setText(msg);
			count++;
			try {
				Thread.sleep(1);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}

[小指一抖内存泄漏]

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class NotePad extends JFrame {
	JTextArea jta;

	class newl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			jta.setText("");
		}
	}

	class openl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			JFileChooser jf = new JFileChooser();
			jf.showOpenDialog(NotePad.this);

		}

	}

	// 保存文件的监听
	class savel implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			JFileChooser jf = new JFileChooser();
			jf.showSaveDialog(NotePad.this);

		}
	}

	// 退出记事本的监听
	class exitl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			System.exit(0);// 退出
		}
	}

	class timerl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			new TestTimer() ;// 秒表
		}
	}

	class tipl implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			JOptionPane.showMessageDialog(null, "程序 信息");
		}
	}
	// 构造函数
	public NotePad() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
		jta = new JTextArea("", 24, 40);
		JScrollPane jsp = new JScrollPane(jta);
		JMenuBar jmb = new JMenuBar();
		JMenu mFile = new JMenu("文件");
		JMenu mStuff = new JMenu("附件");
		JMenu  mHelp= new JMenu("帮助");

		JMenuItem mNew = new JMenuItem("新建");
		mNew.addActionListener(new newl());
		mFile.add(mNew);

		JMenuItem mOpen = new JMenuItem("打开");
		mOpen.addActionListener(new openl());
		mFile.add(mOpen);

		JMenuItem mSave = new JMenuItem("保存");
		mSave.addActionListener(new savel());
		mFile.add(mSave);

		mFile.addSeparator(); // 添加分割线
		
		JMenuItem mExit=new JMenuItem("退出");
		  mExit.addActionListener(new exitl());
		  mFile.add(mExit);
		  						//
		JMenuItem mTime=new JMenuItem("秒表");
		  mTime.addActionListener(new timerl());
		  mStuff.add(mTime);
		  
		JMenuItem mTi=new JMenuItem("关于");
		  mTi.addActionListener(new tipl());
		  mHelp.add(mTi);

		
		jmb.add(mFile);
		jmb.add(mStuff);
		jmb.add(mHelp);

		setJMenuBar(jmb);

		setTitle("课程设计  ");
		getContentPane().add(jsp);
		setSize(634, 500);
		setVisible(true);
	}

// 主函数，程序入口点
	public static void main(String s[]) {
		new NotePad();
	}

}

/*.........................................................*/
class TestTimer extends JFrame implements ActionListener, Runnable 
{
	private static TestTimer obj;
	private JButton btnStart;
	private JButton btnPause;
	private JButton btnResume;
	private JButton btnStop;
	private JLabel lblTime;
	private static Thread th;
	private long count;

	public TestTimer() 
	{
		super("秒表");
		btnStart = new JButton("开始");
		btnPause = new JButton("暂停");
		btnResume = new JButton("继续");
		btnStop = new JButton("停止");
		lblTime = new JLabel("00:00:00.000");
		this.setLayout(new FlowLayout());
		this.add(btnStart);
		this.add(btnPause);
		this.add(btnResume);
		this.add(btnStop);
		this.add(lblTime);
		btnStart.addActionListener(this);
		btnPause.addActionListener(this);
		btnResume.addActionListener(this);
		btnStop.addActionListener(this);
		this.setSize(167, 144);
		this.setResizable(false);
		this.setVisible(true);
	}

	public static void main(String[] args) 
	{
		obj = new TestTimer();
	}


	public void actionPerformed(ActionEvent e) 
	{
		JButton btn = (JButton) e.getSource();
		if (btn.getText().equals("开始")) {
			th = new Thread(this);
			count = 0;
			th.start();
		} else if (btn.getText().equals("暂停")) {
			th.suspend();
		} else if (btn.getText().equals("继续")) {
			th.resume();
		} else if (btn.getText().equals("停止")) {
			th.stop();
		}
	}

	public void run() 
	{
		while (true) {
			int ms, seconds, minutes, hours;
			String msg = "";
			hours = (int) (count / 3600000);
			minutes = (int) ((count - hours * 3600000) / 60000);
			seconds = (int) ((count - hours * 3600000 - minutes * 60000) / 1000);
			ms = (int) (count % 1000);
			if (hours < 10) {
				msg += "0" + hours + ":";
			} else {
				msg += hours + ":";
			}
			if (minutes < 10) {
				msg += "0" + minutes + ":";
			} else {
				msg += minutes + ":";
			}
			if (seconds < 10) {
				msg += "0" + seconds + ":";
			} else {
				msg += seconds + ":";
			}
			if (ms < 10) {
				msg += "00" + ms;
			} else if (ms < 100) {
				msg += "0" + ms;
			} else {
				msg += ms;
			}
			lblTime.setText(msg);
			count++;
			try {
				Thread.sleep(1);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}

看了下，代码写的比较难受，静态变量的问题，可以正常运行了。

[静山晚风]

把43行改为 TestTimer.main(null); 即可正常使用秒表 整个整个程序不跑 TestTimer是因为 Thread包装Runnable实现类时 要放在 NotePad这个类里，总之有点绕，想想Thread应该放的位置