package?com.zzk;

import?java.awt.Graphics;
import?javax.swing.Jframe;
import?javax.swing.JPanel;

public?class?DrawSquareframe?extends?Jframe?{
????DrawSquarePanel?squarePanel?=?new?DrawSquarePanel（）;?//?創建面板類的實例
????
????public?static?void?main（String?args[]）?{?//?主方法
????????DrawSquareframe?frame?=?new?DrawSquareframe（）;?//?創建窗體類的實例
????????frame.setVisible（true）;?//?顯示窗體
????}
????
????public?DrawSquareframe（）?{
????????super（）;?//?調用超類的構造方法
????????settitle（“繪制正方形“）;?//?窗體標題
????????setBounds（100?100?280?180）;?//?窗體的顯示位置和大小
????????setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;?//?窗體關閉方式
????????add（squarePanel）;?//?將面板類的實例添加到窗體容器中
????}
????
????class?DrawSquarePanel?extends?JPanel?{//?創建內部面板類
????????public?void?paint（Graphics?g）?{???//?重寫paint（）方法
????????????g.drawRect（20?20?100?100）;?//?繪制空心正方形
????????????g.drawRect（40?40?60?60）;???//?繪制空心正方形
????????????g.drawRect（140?20?100?100）;???//?繪制空心正方形
????????????g.fillRect（160?40?60?60）;?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????301??2010-07-27?11:42??.classpath
?????文件?????????379??2010-12-31?13:27??.project
?????文件?????????629??2010-07-27?11:42??.settings\org.eclipse.jdt.core.prefs
?????文件?????????756??2011-01-26?09:07??bin\com\zzk\DrawSquareframe$DrawSquarePanel.class
?????文件?????????964??2011-01-26?09:07??bin\com\zzk\DrawSquareframe.class
?????文件????????1145??2010-07-29?14:16??src\com\zzk\DrawSquareframe.java