秒表的个个位数的计算：

package Seconds;

public class Watch_time extends Thread{

int ms,ms_1,ms_2;

int s,s_1;

int m,m_1;

Watch w;

public void set(Watch w) {

this.w=w;

}

public void setNum() {

ms=ms_1= s=s_1=m=m_1=0;

}

public void run() {

while(true) {

try {

Thread.sleep(9);

ms_1++;

if(ms_1==10) {

ms_1=0;

ms++;

}

if(ms==10) {

ms=0;

s_1++;

}

if(s_1==10) {

s_1=0;

s++;

}

if(s==6) {

s=0;

m_1++;

}

if(m_1==10) {

m_1=0;

m++;

}

w.textArea.setText(m+""+m_1+":"+s+""+s_1+"."+ms+""+ms_1);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

Frame类：

可视化界面

package Seconds;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.border.EmptyBorder;

import javax.swing.JTextArea;

import javax.swing.GroupLayout;

import javax.swing.GroupLayout.Alignment;

import javax.swing.JButton;

import java.awt.event.ActionListener;

import java.awt.event.ActionEvent;

import javax.swing.JScrollPane;

import java.awt.SystemColor;

import java.awt.Font;

import javax.swing.UIManager;

import javax.swing.LayoutStyle.ComponentPlacement;

import org.eclipse.wb.swing.FocusTraversalOnArray;

import java.awt.Component;

import java.awt.Color;

public class Watch extends JFrame {

/**

*

*/

private static final long serialVersionUID = 1L;

private JPanel contentPane;

JTextArea textArea = new JTextArea();

int a=1;

int i=0;

public Watch(Watch_time w) {

setTitle("\u79D2\u8868\u8BA1\u65F6\u5668 --\u00A9Dong");

textArea.setText("00:00.00");

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setBounds(100, 100, 450, 300);

contentPane = new JPanel();

JScrollPane scrollPane = new JScrollPane();

scrollPane.setEnabled(false);

contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

setContentPane(contentPane);

JTextArea textArea_1 = new JTextArea();

textArea_1.setFont(new Font("Monospaced", Font.BOLD | Font.ITALIC, 13));

textArea_1.setEditable(false);

textArea_1.setBackground(UIManager.getColor("Button.background"));

JTextArea textArea_2 = new JTextArea();

textArea_2.setFont(UIManager.getFont("Viewport.font"));

textArea_2.setEditable(false);

textArea_2.setText(" \u51C6\u5907\u8BA1\u65F6");

textArea_2.setBackground(SystemColor.control);

JButton btnNewButton=new CircleButton("开始",Color.GREEN);

btnNewButton.setBackground(Color.CYAN);

JButton btnNewButton_1=new CircleButton("\u8BB0\u5F55",Color.GREEN);

JButton btnNewButton_2=new CircleButton("\u91CD\u7F6E",Color.GREEN);

btnNewButton.addActionListener(new ActionListener() {

@SuppressWarnings("deprecation")

public void actionPerformed(ActionEvent e) {

if(btnNewButton.getText().equals("开始"))

{

if(a==1) {

w.start();

textArea_2.setText(" 正在计时");

btnNewButton_1.setEnabled(true);

btnNewButton_2.setEnabled(false);

btnNewButton.setText("暂停");

a=2;

}

else {

textArea_2.setText(" 正在计时");

btnNewButton_1.setEnabled(true);

btnNewButton_2.setEnabled(false);

w.resume();

btnNewButton.setText("暂停");

}

}

else {

textArea_2.setText(" 暂 "+" 停");

btnNewButton_1.setEnabled(false);

btnNewButton_2.setEnabled(true);

w.suspend();

btnNewButton.setText("开始");

}

}

});

btnNewButton_1.setEnabled(false);

btnNewButton_1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

textArea_1.append("第"+(++i)+"次计数:"+textArea.getText()+'\n');

}

});

btnNewButton_2.setEnabled(false);

btnNewButton_2.addActionListener(new ActionListener() {

@SuppressWarnings("deprecation")

public void actionPerformed(ActionEvent e) {

textArea_1.setText("");

i=0;

btnNewButton_2.setEnabled(false);

textArea.setText("00:00.00");

textArea_2.setText(" 准备计时");

w.suspend();

w.setNum();

}

});

GroupLayout gl_contentPane = new GroupLayout(contentPane);

gl_contentPane.setHorizontalGroup(

gl_contentPane.createParallelGroup(Alignment.TRAILING)

.addComponent(scrollPane, GroupLayout.DEFAULT_SIZE, 425, Short.MAX_VALUE)

.addGroup(gl_contentPane.createSequentialGroup()

.addGap(48)

.addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, 77, GroupLayout.PREFERRED_SIZE)

.addGap(38)

.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)

.addGroup(gl_contentPane.createSequentialGroup()

.addComponent(btnNewButton_2, GroupLayout.PREFERRED_SIZE, 72, GroupLayout.PREFERRED_SIZE)

.addGap(44)

.addComponent(btnNewButton_1, GroupLayout.PREFERRED_SIZE, 72, GroupLayout.PREFERRED_SIZE)

.addContainerGap())

.addGroup(Alignment.TRAILING, gl_contentPane.createSequentialGroup()

.addComponent(textArea, GroupLayout.PREFERRED_SIZE, 128, GroupLayout.PREFERRED_SIZE)

.addContainerGap(134, Short.MAX_VALUE))

.addGroup(Alignment.TRAILING, gl_contentPane.createSequentialGroup()

.addComponent(textArea_2, GroupLayout.DEFAULT_SIZE, 84, Short.MAX_VALUE)

.addGap(178))))

);

gl_contentPane.setVerticalGroup(

gl_contentPane.createParallelGroup(Alignment.TRAILING)

.addGroup(gl_contentPane.createSequentialGroup()

.addComponent(scrollPane, GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)

.addGap(33)

.addComponent(textArea, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)

.addPreferredGap(ComponentPlacement.RELATED)

.addComponent(textArea_2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)

.addGap(15)

.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)

.addComponent(btnNewButton_2, GroupLayout.PREFERRED_SIZE, 68, GroupLayout.PREFERRED_SIZE)

.addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, 66, GroupLayout.PREFERRED_SIZE)

.addComponent(btnNewButton_1, GroupLayout.PREFERRED_SIZE, 66, GroupLayout.PREFERRED_SIZE))

.addGap(44))

);

textArea.setEditable(false);

textArea.setFont(new Font("Monospaced", Font.BOLD | Font.ITALIC, 16));

textArea.setBackground(SystemColor.control);

scrollPane.setViewportView(textArea_1);

contentPane.setLayout(gl_contentPane);

contentPane.setFocusTraversalPolicy(new FocusTraversalOnArray(new Component[]{scrollPane, btnNewButton, textArea_1, btnNewButton_1, textArea, btnNewButton_2, textArea_2}));

}

}