数字时钟Java实训_Java实现动态数字时钟

本文实例为大家共享了Java实现动态数字时钟的详细代码&＃xff0c;供大家参考&＃xff0c;详细内容如下

构建&＃xff1a;

Clock继承 JFrame 为运行网页

ClockText 测试类 创建 Clock 对象

运行效果&＃xff1a;

详细实现&＃xff1a;

一、Clock类

四个JPnal 三个放时间 最后一个放日期

放时间的三个JPnal 分别加入 地点 时间 按钮

最后一个按钮添加日期

详细实现如下&＃xff1a;

public class Clock extends JFrame {

private JPanel jPanelBeijing;

private JPanel jPanelNewYork;

private JPanel jPanelLondom;

private JPanel jPanelDate;

private boolean BeijingThreadFlag_IsStart &＃61; true;

private boolean NewYorkThreadFlag_IsStart &＃61; true;

private boolean LondonThreadFlag_IsStart &＃61; true;

public Clock() {

// TODO Auto-generated constructor stub

jPanelBeijing &＃61; new JPanel();

jPanelNewYork &＃61; new JPanel();

jPanelLondom &＃61; new JPanel();

jPanelDate &＃61; new JPanel();

iniRelations();

iniLayout();

jFrameClick();

setVisible(true);

setSize(480, 225);

setLocationRelativeTo(null);

}

private void iniLayout() {

jPanelBeijing.setLayout(new GridLayout(3, 1));

jPanelNewYork.setLayout(new GridLayout(3, 1));

jPanelLondom.setLayout(new GridLayout(3, 1));

}

// 关系

private void iniRelations() {

this.add(BorderLayout.WEST, jPanelBeijing);

this.add(BorderLayout.CENTER, jPanelNewYork);

this.add(BorderLayout.EAST, jPanelLondom);

this.add(BorderLayout.SOUTH, jPanelDate);

Font placeFont &＃61; new Font("楷体", Font.BOLD, 36);

JLabel jLabelBeijing &＃61; new JLabel("北京时间");

jLabelBeijing.setFont(placeFont);

jPanelBeijing.add(jLabelBeijing);

setWestPanel();

JLabel jLabelNewYork &＃61; new JLabel("纽约时间");

jLabelNewYork.setFont(placeFont);

jPanelNewYork.add(jLabelNewYork);

setCenterPanel();

JLabel jLabelLondon &＃61; new JLabel("伦敦时间");

jLabelLondon.setFont(placeFont);

jPanelLondom.add(jLabelLondon);

setEastPanel();

setDatePanel();

}

private void setWestPanel() {

// add time for SouthPanel

JLabel jLabelTime &＃61; new JLabel("加载中.");

jLabelTime.setFont(new Font("宋体", Font.BOLD, 30));

Timer timeAction &＃61; new Timer(1000, new ActionListener() {

public void actionPerformed(ActionEvent e) {

long timemillis &＃61; System.currentTimeMillis();

// 转换日期显示格式

SimpleDateFormat time &＃61; new SimpleDateFormat("HH:mm:ss ");

jLabelTime.setText(time.format(new Date(timemillis)));

}

});

timeAction.start();

jPanelBeijing.add(jLabelTime);

Button button &＃61; new Button("北京暂停");

button.addActionListener(new ActionListener() {

&＃64;Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if (BeijingThreadFlag_IsStart) {

timeAction.stop();

button.setLabel("北京继续");

BeijingThreadFlag_IsStart &＃61; false;

} else {

timeAction.start();

button.setLabel("北京暂停");

BeijingThreadFlag_IsStart &＃61; true ;

}

}

});

jPanelBeijing.add(button);

}

private void setCenterPanel() {

// add time for SouthPanel

JLabel jLabelTime &＃61; new JLabel("加载中.");

jLabelTime.setFont(new Font("宋体", Font.BOLD, 30));

Timer timeAction &＃61; new Timer(1000, new ActionListener() {

public void actionPerformed(ActionEvent e) {

long timemillis &＃61; System.currentTimeMillis();

// 转换日期显示格式

SimpleDateFormat time &＃61; new SimpleDateFormat("HH:mm:ss ");

jLabelTime.setText(time.format(new Date(timemillis - 13 * 60 * 60 * 1000)));

}

});

timeAction.start();

jPanelNewYork.add(jLabelTime);

Button button &＃61; new Button("纽约暂停");

button.addActionListener(new ActionListener() {

&＃64;Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if (NewYorkThreadFlag_IsStart) {

timeAction.stop();

button.setLabel("纽约继续");

NewYorkThreadFlag_IsStart &＃61; false;

} else {

timeAction.start();

button.setLabel("纽约暂停");

NewYorkThreadFlag_IsStart &＃61; true ;

}

}

});

jPanelNewYork.add(button);

}

private void setEastPanel() {

// add time for SouthPanel

// JLabel jLabelDate &＃61; new JLabel("Date");

JLabel jLabelTime &＃61; new JLabel("加载中.");

jLabelTime.setFont(new Font("宋体", Font.BOLD, 30));

Timer timeAction &＃61; new Timer(1000, new ActionListener() {

public void actionPerformed(ActionEvent e) {

long timemillis &＃61; System.currentTimeMillis();

// SimpleDateFormat date &＃61; new SimpleDateFormat("yyyy 年 MM 月 dd

// 日 ");

// jLabelDate.setText(" 当前日期&＃xff1a; " &＃43; date.format(new

// Date(timemillis)));

SimpleDateFormat time &＃61; new SimpleDateFormat("HH:mm:ss ");

jLabelTime.setText(time.format(new Time(timemillis - 8 * 60 * 60 * 1000)));

}

});

timeAction.start();

jPanelLondom.add(jLabelTime);

Button button &＃61; new Button("伦敦暂停");

button.addActionListener(new ActionListener() {

&＃64;Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if (LondonThreadFlag_IsStart) {

timeAction.stop();

button.setLabel("伦敦继续");

LondonThreadFlag_IsStart &＃61; false;

} else {

timeAction.start();

button.setLabel("伦敦暂停");

LondonThreadFlag_IsStart &＃61; true ;

}

}

});

jPanelLondom.add(button);

// jPanelLondom.add(jLabelDate);

}

private void setDatePanel() {

// add time for SouthPanel

JLabel jLabelDate &＃61; new JLabel("加载中.");

Timer timeAction &＃61; new Timer(1000, new ActionListener() {

public void actionPerformed(ActionEvent e) {

long timemillis &＃61; System.currentTimeMillis();

SimpleDateFormat date &＃61; new SimpleDateFormat("yyyy 年 MM 月 dd 日 ");

jLabelDate.setText(" 当前日期&＃xff1a; " &＃43; date.format(new Date(timemillis)));

}

});

timeAction.start();

jPanelDate.add(jLabelDate);

}

private void jFrameClick(){

setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);//设置不默认关闭

addWindowListener(new WindowListener() {

&＃64;Override

public void windowOpened(WindowEvent e) {

// TODO Auto-generated method stub

}

&＃64;Override

public void windowIconified(WindowEvent e) {

// TODO Auto-generated method stub

}

&＃64;Override

public void windowDeiconified(WindowEvent e) {

// TODO Auto-generated method stub

}

&＃64;Override

public void windowDeactivated(WindowEvent e) {

// TODO Auto-generated method stub

}

&＃64;Override

public void windowClosing(WindowEvent e) {

// TODO Auto-generated method stub

int x &＃61; JOptionPane.showConfirmDialog(null, "确认退出么&＃xff1f;", "友情提示", JOptionPane.OK_CANCEL_OPTION,

JOptionPane.WARNING_MESSAGE);

if (x &＃61;&＃61; 0) {

System.exit(0);

}

}

&＃64;Override

public void windowClosed(WindowEvent e) {

// TODO Auto-generated method stub

}

&＃64;Override

public void windowActivated(WindowEvent e) {

// TODO Auto-generated method stub

}

});

}

}

二、创建ClockText类用于测试

public class ClockText{

public static void main(String[] args) {

new Clock();

}

}

以上就是本文的全部内容&＃xff0c;希望对大家的学习有所帮助&＃xff0c;也希望大家多多支持乐购源码。