怎么编写一个倒计时的java的程序？求具体步骤！

微信公开课小程序热门讨论「怎么编写一个倒计时的java的程序？求具体步骤！」最新回复-packagecom.nokia;importjava.awt.BorderLayout;importjava.awt.GridLayout;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.util.Arrays;//importjava.awt.event.ActionListener;importjava.util.Calendar;importjava.util.Date;importjava.util.Timer;importjava.util.TimerTask;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JLabel;importjavax.swing.JOptionPane;importjavax.swing.JPanel;importjavax.swing.JTextField;//Graduatetimefromjavaschool:2010819publicclassCountDownextendsJFrame{privatelonglongTime;privatelongcurrentTime;privatelongdistTime;privatelongday,hour,minutes,seconds;privateJTextFieldt_eventname;privateJTextFieldt_eventtime;privateJButtonok;privateJPanelmainframe;privateGridLayoutgrid;privateBorderLayoutborder;privateJLabeljl;privateActionListeneractionlistener;privateStringeventname;privateCalendarcal;publicCountDown(){this(CountDownTimer);}publicCountDown(StringframeName){super(frameName);initial();setSize(400,200);//this.setResizable(false);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setLocationByPlatform(true);this.setVisible(true);this.requestFocus();//CDown();}privatevoidinitial(){createComponent();layOut();listener();}privatevoidcreateComponent(){cal=Calendar.getInstance();t_eventname=newJTextField();t_eventtime=newJTextField();mainframe=newJPanel();border=newBorderLayout();grid=newGridLayout(4,1);ok=newJButton(OK);jl=newJLabel();}privatevoidlayOut(){this.getContentPane().add(mainframe);mainframe.setLayout(grid);mainframe.add(t_eventname);mainframe.add(t_eventtime);mainframe.add(ok);mainframe.add(jl);}privatevoidlistener(){actionlistener=newActionListener(){@OverridepublicvoidactionPerformed(ActionEvente){eventname=t_eventname.getText();Stringeventtime=t_eventtime.getText();if(eventname.equals()){JOptionPane.showMessageDialog(mainframe,pleaseinputtheEventname);return;}if(eventtime.equals()){JOptionPane.showMessageDialog(mainframe,pleaseinputtheEventTime);return;}if(!eventtime.matches(\\d{4}/\\d{2}/\\d{2}/\\d{2}:\\d{2}:\\d{2})){JOptionPane.showMessageDialog(mainframe,pleaseinputtherightformatTimelike1989/04/09/09:22:34);/*hereyoushouldjudgeifthetimeistherighttime,suchasnot1989/23/34...*afterthat,youshouldbesureherethetimeisinthefuture!goodluck**/return;}String[]temp=eventtime.split(/|:);//System.out.println(Arrays.toString(temp));cal.set(Integer.valueOf(temp[0]),Integer.valueOf(temp[1]),Integer.valueOf(temp[2]),Integer.valueOf(temp[3]),Integer.valueOf(temp[4]),Integer.valueOf(temp[5]));CDown();}};ok.addActionListener(actionlistener);}publicvoidCDown(){Timertimer=newTimer();//JFramejf=newJFrame();//jf.add(jl);//jf.setVisible(true);//jf.setSize(400,150);//jf.getDefaultCloseOperation();timer.schedule(newTimerTask(){@Overridepublicvoidrun(){//返回历元到指定时间的ahref=https://www.baidu.com/s?wd=%E6%AF%AB%E7%A7%92&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1dhnhwWPAF9PAmLmynvrjwW0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4BmybIi4WUvYETgNTLwGUv3ErHcsnWb1P10YnH0krH6snWb4target=_blankclass=baiduhighlight毫秒/a数。longTime=cal.getTimeInMillis();//返回自1970年1月1日00:00:00GMT以来此Date对象表示的ahref=https://www.baidu.com/s?wd=%E6%AF%AB%E7%A7%92&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1dhnhwWPAF9PAmLmynvrjwW0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4BmybIi4WUvYETgNTLwGUv3ErHcsnWb1P10YnH0krH6snWb4target=_blankclass=baiduhighlight毫秒/a数。currentTime=newDate().getTime();distTime=longTimecurrentTime;day=((distTime/1000)/(3600*24));hour=((distTime/1000)day*86400)/3600;minutes=((distTime/1000)day*86400hour*3600)/60;seconds=(distTime/1000)day*86400hour*3600minutes*60;jl.setText(eventname+day+天+hour+小时:+minutes+分钟:+seconds+秒);}},0,1000);}publicstaticvoidmain(String[]args){newCountDown(CountDownTimeer);}}
基于控制台的话很简单的，我跟你说一下大体思路吧，二话不说先来个for循环，然后输出倒计时的数字，程序睡一秒，在输出倒计时数字，如此循环，简单吧，下面看程序：publicstaticvoidmain(String[]args){for(inti=10;i0;i--){ System.out.print(i+); try{ Thread.sleep(1000); }catch(InterruptedExceptione){ e.printStackTrace(); }}System.err.print(爆炸);}其他基于网页的还是基于用户界面都可以使用这个思路的 更多有关「怎么编写一个倒计时的java的程序？求具体步骤！」的疑问请扫码关注微信公开课+小程序！