本文實例講述了java實現的動態數字時鐘功能。分享給大家供大家參考，具體如下：

構建：

1. clock繼承 jframe 為運行頁面

2. clocktext 測試類 創建 clock 對象

運行效果：

具體實現：

一、clock類

四個jpnal 三個放時間 最后一個放日期

放時間的三個jpnal 分別加入 地點 時間 按鈕

最后一個按鈕添加日期

具體實現如下：

public class clock extends jframe {

private jpanel jpanelbeijing;

private jpanel jpanelnewyork;

private jpanel jpanellondom;

private jpanel jpaneldate;

private boolean beijingthreadflag_isstart = true;

private boolean newyorkthreadflag_isstart = true;

private boolean londonthreadflag_isstart = true;

public clock() {

// todo auto-generated constructor stub

jpanelbeijing = new jpanel();

jpanelnewyork = new jpanel();

jpanellondom = new jpanel();

jpaneldate = 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));

}

// 關系

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 = new font("楷體", font.bold, 36);

jlabel jlabelbeijing = new jlabel("北京時間");

jlabelbeijing.setfont(placefont);

jpanelbeijing.add(jlabelbeijing);

setwestpanel();

jlabel jlabelnewyork = new jlabel("紐約時間");

jlabelnewyork.setfont(placefont);

jpanelnewyork.add(jlabelnewyork);

setcenterpanel();

jlabel jlabellondon = new jlabel("倫敦時間");

jlabellondon.setfont(placefont);

jpanellondom.add(jlabellondon);

seteastpanel();

setdatepanel();

}

private void setwestpanel() {

// add time for southpanel

jlabel jlabeltime = new jlabel("加載中.");

jlabeltime.setfont(new font("宋體", font.bold, 30));

timer timeaction = new timer(1000, new actionlistener() {

public void actionperformed(actionevent e) {

long timemillis = system.currenttimemillis();

// 轉換日期顯示格式

simpledateformat time = new simpledateformat("hh:mm:ss ");

jlabeltime.settext(time.format(new date(timemillis)));

}

});

timeaction.start();

jpanelbeijing.add(jlabeltime);

button button = new button("北京暫停");

button.addactionlistener(new actionlistener() {

@override

public void actionperformed(actionevent e) {

// todo auto-generated method stub

if (beijingthreadflag_isstart) {

timeaction.stop();

button.setlabel("北京繼續");

beijingthreadflag_isstart = false;

} else {

timeaction.start();

button.setlabel("北京暫停");

beijingthreadflag_isstart = true ;

}

}

});

jpanelbeijing.add(button);

}

private void setcenterpanel() {

// add time for southpanel

jlabel jlabeltime = new jlabel("加載中.");

jlabeltime.setfont(new font("宋體", font.bold, 30));

timer timeaction = new timer(1000, new actionlistener() {

public void actionperformed(actionevent e) {

long timemillis = system.currenttimemillis();

// 轉換日期顯示格式

simpledateformat time = new simpledateformat("hh:mm:ss ");

jlabeltime.settext(time.format(new date(timemillis - 13 * 60 * 60 * 1000)));

}

});

timeaction.start();

jpanelnewyork.add(jlabeltime);

button button = new button("紐約暫停");

button.addactionlistener(new actionlistener() {

@override

public void actionperformed(actionevent e) {

// todo auto-generated method stub

if (newyorkthreadflag_isstart) {

timeaction.stop();

button.setlabel("紐約繼續");

newyorkthreadflag_isstart = false;

} else {

timeaction.start();

button.setlabel("紐約暫停");

newyorkthreadflag_isstart = true ;

}

}

});

jpanelnewyork.add(button);

}

private void seteastpanel() {

// add time for southpanel

// jlabel jlabeldate = new jlabel("date");

jlabel jlabeltime = new jlabel("加載中.");

jlabeltime.setfont(new font("宋體", font.bold, 30));

timer timeaction = new timer(1000, new actionlistener() {

public void actionperformed(actionevent e) {

long timemillis = system.currenttimemillis();

// simpledateformat date = new simpledateformat("yyyy 年 mm 月 dd

// 日 ");

// jlabeldate.settext(" 當前日期： " + date.format(new

// date(timemillis)));

simpledateformat time = new simpledateformat("hh:mm:ss ");

jlabeltime.settext(time.format(new time(timemillis - 8 * 60 * 60 * 1000)));

}

});

timeaction.start();

jpanellondom.add(jlabeltime);

button button = new button("倫敦暫停");

button.addactionlistener(new actionlistener() {

@override

public void actionperformed(actionevent e) {

// todo auto-generated method stub

if (londonthreadflag_isstart) {

timeaction.stop();

button.setlabel("倫敦繼續");

londonthreadflag_isstart = false;

} else {

timeaction.start();

button.setlabel("倫敦暫停");

londonthreadflag_isstart = true ;

}

}

});

jpanellondom.add(button);

// jpanellondom.add(jlabeldate);

}

private void setdatepanel() {

// add time for southpanel

jlabel jlabeldate = new jlabel("加載中.");

timer timeaction = new timer(1000, new actionlistener() {

public void actionperformed(actionevent e) {

long timemillis = system.currenttimemillis();

simpledateformat date = new simpledateformat("yyyy 年 mm 月 dd 日 ");

jlabeldate.settext(" 當前日期： " + date.format(new date(timemillis)));

}

});

timeaction.start();

jpaneldate.add(jlabeldate);

}

private void jframeclick(){

setdefaultcloseoperation(jframe.do_nothing_on_close);//設置不默認關閉

addwindowlistener(new windowlistener() {

@override

public void windowopened(windowevent e) {

// todo auto-generated method stub

}

@override

public void windowiconified(windowevent e) {

// todo auto-generated method stub

}

@override

public void windowdeiconified(windowevent e) {

// todo auto-generated method stub

}

@override

public void windowdeactivated(windowevent e) {

// todo auto-generated method stub

}

@override

public void windowclosing(windowevent e) {

// todo auto-generated method stub

int x = joptionpane.showconfirmdialog(null, "確認退出么？", "友情提示", joptionpane.ok_cancel_option,

joptionpane.warning_message);

if (x == 0) {

system.exit(0);

}

}

@override

public void windowclosed(windowevent e) {

// todo auto-generated method stub

}

@override

public void windowactivated(windowevent e) {

// todo auto-generated method stub

}

});

}

}

二、創建clocktext類用于測試

public class clocktext{

public static void main(string[] args) {

new clock();

}

}

ps：這里再為大家推薦幾款時間及日期相關工具供大家參考使用：

在線世界各地時間查詢：

unix時間戳(timestamp)轉換工具：

在線日期/天數計算器：

希望本文所述對大家java程序設計有所幫助。

希望與廣大網友互動？？

點此進行留言吧！

總結

以上是生活随笔為你收集整理的java显示多个地区时钟_Java实现的动态数字时钟功能示例【显示世界时间】的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。