java 按钮键盘,java中关于键盘代替按钮的一些有关问题（是代替）~

Java codeimport java.awt.*;

import java.awt.event.*;

import java.text.SimpleDateFormat;

import java.util.*;

import javax.swing.*;

import javax.swing.border.*;

public class TestTimePiece extends JFrame {

ControlPanel controlPane = null; //-----------------控制面板

JTextField jTextField;

public TestTimePiece() {

super();

init();

}

private void init() {

controlPane = new ControlPanel(this);

add(controlPane);

setPreferredSize(new Dimension(300, 170));

pack();

setVisible(true);

setResizable(false);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

addKeyListener(new TimePieceKeyListener());

}

public static void main(String[] args) {

new TestTimePiece();

;

}

class TimePieceKeyListener extends KeyAdapter {

public void keyReleased(KeyEvent e) {

controlPane.keyReleased(e);

}

}

}

class ControlPanel extends JPanel {

private JFrame snakeFrame = null;

JLabel jLabel,jLabel1, jLabel2, jLabel3, jLabel4;

Date dateWhenStartJpanel;//保存程序启动时的时间

Date dateWhenClickF5;

Thread thread ;

public ControlPanel(JFrame snakeFrame) {

super();

this.snakeFrame = snakeFrame;

init();

}

private void init() {

dateWhenStartJpanel = new Date();

setSize(608, 31);

setBackground(Color.WHITE);

setLayout(new FlowLayout());

setBorder(new LineBorder(Color.white, 5));

setLayout(new FlowLayout());

jLabel = new JLabel();

jLabel1 = new JLabel();

jLabel2 = new JLabel();

jLabel3 = new JLabel();

jLabel4 = new JLabel();

add(jLabel);

add(jLabel1);

add(jLabel2);

add(jLabel3);

add(jLabel4);

jLabel.setText("F5:开始计时 F6:停止计时");

}

public void keyReleased(KeyEvent e) {

int keyCode = e.getKeyCode();

if (keyCode == KeyEvent.VK_F5) {

dateWhenClickF5 = new Date();//sava time when click F5

thread = new Thread(new TimePieceRunnable())

;thread.start();

} else if (keyCode == KeyEvent.VK_F6) {

if(thread != null)thread.stop();

else prompt("请先按F5");

}

}

class TimePieceRunnable implements Runnable {

public void run() {

while (true) {

Date tempDate = new Date();

String tempString = formateToTime(tempDate, "现在时间是 E kk:mm:ss:");

jLabel1.setText(tempString);

tempString = formateToTime(dateWhenStartJpanel,

"启动程序时间是 E kk:mm:ss:");

jLabel2.setText(tempString);

tempString = formateToTime(dateWhenClickF5,

"最近一次按动F5时间是 E kk:mm:ss:");

jLabel3.setText(tempString);

tempDate = getMillisOfTimeDifference(dateWhenClickF5, tempDate);

tempString = formateToTime(tempDate,

"最近一次按动F5到现在的时间差是 kk:mm:ss:");

jLabel4.setText(tempString);

try {

repaint();

Thread.sleep(100);每隔0.1秒刷新一次

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

public String formateToTime(Date date, String timeRegex) {

//Date date = new Date();

//SimpleDateFormat f = new SimpleDateFormat("'BeiJing Time':yyyy年MM月dd日 E kk时mm分ss秒");

SimpleDateFormat f = new SimpleDateFormat(timeRegex);

String newTypeDate = f.format(date);

return newTypeDate;

}

public Date getMillisOfTimeDifference(Date date1, Date date2) {

Calendar calendar = Calendar.getInstance();

calendar.setTime(date1);

long timelnMillis1 = calendar.getTimeInMillis();

calendar.setTime(date2);

long timelnMillis2 = calendar.getTimeInMillis();

calendar.setTimeInMillis(timelnMillis2 - timelnMillis1);

return calendar.getTime();

}

private static int prompt(String promptMessage) {

return JOptionPane.showConfirmDialog(null, promptMessage, "友情提示",

JOptionPane.WARNING_MESSAGE);

}

}

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