package?com.zzk;

import?java.awt.Graphics;
import?java.awt.Graphics2D;
import?java.awt.geom.Area;
import?java.awt.geom.Ellipse2D;
import?javax.swing.Jframe;
import?javax.swing.JPanel;

public?class?SubtractOperationframe?extends?Jframe?{
????SubtractOperationPanel?subtractOperationPanel?=?new?SubtractOperationPanel（）;?//?創建面板類的實例
????public?static?void?main（String?args[]）?{?//?主方法
????????SubtractOperationframe?frame?=?new?SubtractOperationframe（）;?//?創建窗體類的實例
????????frame.setVisible（true）;?//?顯示窗體
????}
????
????public?SubtractOperationframe（）?{
????????super（）;?//?調用超類的構造方法
????????settitle（“圖形的減運算“）;?//?窗體標題
????????setBounds（100?100?395?240）;?//?窗體的顯示位置和大小
????????setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;?//?窗體關閉方式
????????add（subtractOperationPanel）;?//?將面板類的實例添加到窗體容器中
????}
????
????class?SubtractOperationPanel?extends?JPanel?{?//?創建內部面板類
????????public?void?paint（Graphics?g）?{????//?重寫paint（）方法
????????????Graphics2D?g2?=?（Graphics2D）g;?//?獲得

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????301??2010-07-31?08:37??.classpath
?????文件?????????379??2010-12-31?13:32??.project
?????文件?????????629??2010-07-31?08:37??.settings\org.eclipse.jdt.core.prefs
?????文件????????1425??2011-01-25?14:29??bin\com\zzk\SubtractOperationframe$SubtractOperationPanel.class
?????文件????????1041??2011-01-25?14:29??bin\com\zzk\SubtractOperationframe.class
?????文件????????1966??2010-07-31?09:39??src\com\zzk\SubtractOperationframe.java