clock.java

这是一个在java环境下实现的日历应用程序

import java.util.Calendar;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class Clock extends JPanel  implements ActionListener
{
	 
	int hh,mm,ss,y,m,d;
	 String st;
	 MyCalendar calendar;
	 Calendar  calendar1=Calendar.getInstance();
	 Label title;
	 JTextField showhour,showminute,showsecond;
	  JLabel s1,s2;
	 JButton settime,ensure,cancel;
	Thread 
	 boolean Ifstart=false;
     boolean  Ifset=false;
	public Clock(MyCalendar calendar)
	{
		     
	          this.calendar=calendar;
	           y=calendar.getYear();
	           m=calendar.getMonth();
	           d =calendar.getDay();
	           
	           JPanel titlePanel=new JPanel();
	           titlePanel.setLayout(new GridLayout(2,2));
               Label title=new Label("当前日期时间为：");
               title.setFont(new Font ("TimesRoman",Font.BOLD,20));
               title.setForeground(Color.blue);
               titlePanel.add(title,BorderLayout.CENTER);
               
          JLabel s1=new JLabel(" : ");
          JLabel s2=new JLabel(" : ");
          Label s3=new Label("         ");
          Label s4=new Label("         ");
          
         showhour = new JTextField(2); 
         showhour.setForeground(Color.red);
		 showminute=new JTextField(2);
	     showsecond=new JTextField(2);
		 
		 showsecond.setEditable(false);
		 showhour.setEditable(false);
		 showminute.setEditable(false);
		 
		 settime=new JButton("设置时间");
		 cancel=new JButton("取消");
		 ensure=new JButton("确定");
		 
		 Box box1=Box.createHorizontalBox();
		
		 box1.add(ensure);
		 box1.add(s4);
		 box1.add(cancel);
		 
		 
		 
		 JPanel timePannel=new JPanel();
		 timePannel.setLayout(new GridLayout(4,4));
		 Box box=Box.createHorizontalBox();
		 box.add(showhour);
		 box.add(s1);
		 box.add(showminute);
		 box.add(s2);
		 box.add(showsecond);
		 
		timePannel.add(box,BorderLayout.CENTER);
		timePannel.add(s3);	 
		timePannel.add(settime,BorderLayout.SOUTH);
		setLayout(new BorderLayout());
	

	     add(titlePanel, BorderLayout.NORTH); 
         add(timePannel, BorderLayout.CENTER);
         add(box1,BorderLayout.SOUTH);
         
         settime.addActionListener(this);
         ensure.addActionListener(this);
         cancel.addActionListener(this);
       
     
        showtime();
       timer=new Timer (1000,this);
       
       Ifstart=false;
        }
        	    public void showtime()
        {
       
        if(Ifset==false)
        {
         hh=calendar1.get(Calendar.HOUR_OF_DAY);
        mm=calendar1.get(Calendar.MINUTE);
        ss=calendar1.get(Calendar.SECOND);
     }
   
       else
          {
          	 	    hh=Integer.parseInt(showhour.getText());
        			mm=Integer.parseInt(showminute.getText());
        			ss=Integer.parseInt(showsecond.getText());
        		    calendar1.set(y,m,d,hh,ss,mm);
        		    //Ifset=false;
        	
       }
           if(hh<10) st="0"+hh;  else st=""+hh;
      showhour.setText(st);
      if(mm<10)  st="0"+mm; else st=""+mm;
       showminute.setText(st);
      if(ss<10)   st="0"+ss; else st=""+ss;
       showsecond.setText(st);}
        
      
   
        public void actionPerformed(ActionEvent e)
        {
        		if (Ifstart==false)
        		{
        			timer.start();
        			Ifstart=true;
        		}
        	if(e.getSource()==settime)
             {
       
        		Ifset=true;
        		 showsecond.setEditable(true);
		 showhour.setEditable(true);
		 showminute.setEditable(true);
		 showtime();
        		
        		}
        	else if(e.getSource()==timer)
        	{
                 showtime();
        	}
        	else if(e.getSource()==cancel)
        	{
        		
                 showhour.setEditable(false);
                 showminute.setEditable(false);
                 showsecond.setEditable(false);
                 Ifset=false;
                 showtime();
        	}
        	}
        	}