Java 開發：日曆類的使用方式

import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class CalendarFrame extends Frame implements ActionListener
{
	public static void main(String[] args)
	{
		new CalendarFrame();
	}
	
	Dimension dimension=Toolkit.getDefaultToolkit().getScreenSize();//獲取屏幕Size
	int x=dimension.width,y=dimension.height;//定義兩個變量x和y存儲屏幕的width和height
	int n=1;
	Panel northPanel=new Panel(new FlowLayout());//定義一個名爲northPanel的Panel放下面兩個Button
	Panel centerPanel=new Panel(new GridLayout(7,7));//
	Panel southPanel=new Panel(new FlowLayout());	
	Button previousMonth=new Button("PreviousMonth");//單擊事件爲 上一個月
	Button nextMonth=new Button("NextMonth");//單擊事件爲 下一個月
	CalendarFrame()
	{
		setBounds(x/2-125, y/2-175, 200, 300);//設置窗體位置、大小
		setLayout(new BorderLayout());//設置窗體佈局
		
		add(northPanel,BorderLayout.NORTH);//添加northPanel
		add(centerPanel,BorderLayout.CENTER);
		add(southPanel,BorderLayout.SOUTH);
		northPanel.add(previousMonth);
		northPanel.add(nextMonth);
		centerPanel.setBounds(0, 0, 250, 250);
		southPanel.add(new Label("日曆：This is time area!"));
		for(int i=0;i<=6;i++){
			for(int j=0;j<=6;j++){	
				if(i==0){
					centerPanel.add(new Button("OK"));
				}
				else {
					centerPanel.add(new Label("Label"));
				}
			}
		}
		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
		
		setVisible(true);
		this.validate();
	}

	public void actionPerformed(ActionEvent e)
	{
		// TODO Auto-generated method stub
		
	}
}
class CalenderClass extends Frame{
	CalendarFrame calendarFrame=new CalendarFrame();
	Calendar calendar=Calendar.getInstance();
	int weekDay;
	CalenderClass(int year,int month,int day){
		calendar.set(year, month, day);
		weekDay=calendar.get(Calendar.DAY_OF_WEEK);
		String a[]=new String[weekDay+31];		
		for(int i=0;i<weekDay;i++){
			
		}
	}
}

日曆