本文實(shí)例講述了java實(shí)現(xiàn)的動(dòng)態(tài)數(shù)字時(shí)鐘功能。分享給大家供大家參考，具體如下：
構(gòu)建：
1. clock繼承 jframe 為運(yùn)行頁(yè)面
2. clocktext 測(cè)試類(lèi) 創(chuàng)建 clock 對(duì)象
運(yùn)行效果：
具體實(shí)現(xiàn)：
一、clock類(lèi)
- 四個(gè)jpnal 三個(gè)放時(shí)間 最后一個(gè)放日期
- 放時(shí)間的三個(gè)jpnal 分別加入 地點(diǎn) 時(shí)間 按鈕
- 最后一個(gè)按鈕添加日期
具體實(shí)現(xiàn)如下：
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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(guān)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(shí)間"); jlabelbeijing.setfont(placefont); jpanelbeijing.add(jlabelbeijing); setwestpanel(); jlabel jlabelnewyork = new jlabel("紐約時(shí)間"); jlabelnewyork.setfont(placefont); jpanelnewyork.add(jlabelnewyork); setcenterpanel(); jlabel jlabellondon = new jlabel("倫敦時(shí)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(zhuǎn)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(xù)"); 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(zhuǎn)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(xù)"); 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(dāng)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(xù)"); 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(dāng)前日期： " + date.format(new date(timemillis))); } }); timeaction.start(); jpaneldate.add(jlabeldate); } private void jframeclick(){ setdefaultcloseoperation(jframe.do_nothing_on_close);//設(shè)置不默認(rèn)關(guān)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(rèn)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(chuàng)建clocktext類(lèi)用于測(cè)試
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public class clocktext{ public static void main(string[] args) { new clock(); }} |
希望本文所述對(duì)大家java程序設(shè)計(jì)有所幫助。
原文鏈接：https://blog.csdn.net/qq_43377749/article/details/85096893
