import?java.awt.BasicStroke;
import?java.awt.Color;
import?java.awt.Font;
import?java.awt.Graphics2D;
import?java.io.Serializable;

/*類通過實(shí)現(xiàn)?java.io.Serializable?接口以啟用其序列化功能。
?未實(shí)現(xiàn)此接口的類將無法使其任何狀態(tài)序列化或反序列化。
?可序列化類的所有子類型本身都是可序列化的。序列化接口沒有方法或字段，
?僅用于標(biāo)識(shí)可序列化的語義。*/


public?class?Drawing?implements?Serializable?{
	private?static?final?long?serialVersionUID?=?4945502450819201865L;

	int?x1?x2?y1?y2;?//?定義坐標(biāo)屬性
	Color?color?=?null;//?設(shè)置顏色屬性
	float?stroke;?//?定義線條粗細(xì)的屬性
	int?type;?//?定義字體屬性
	String?s1;?//?輸入的字符串
	String?s2;?//?定義字體的風(fēng)格
	int?xLocation?=?-1;//?左上角x的坐標(biāo)
	int?yLocation?=?-1;//?左上角y的坐標(biāo)
	int?width?=?0;//?圓的寬度
	int?heigh?=?0;//?圓的高度
	String?name?=?““;//?用于存放結(jié)點(diǎn)的名稱

	public?String?getName（）?{
		return?name;
	}

	public?void?setName（String?name）?{
		this.name?=?name;
	}

	public?void?setColor（Color?color）?{
		this.color?=?color;
	}
	void?draw（Graphics2D?g2d）?{
	}//?定義繪圖函數(shù)
}

class?Line?extends?Drawing//?直線類
{
	private?static?final?long?serialVersionUID?=?4945502450819201865L;
	String?lineSpace?=?““;//?用于存放結(jié)點(diǎn)與結(jié)點(diǎn)間的距離
	void?draw（Graphics2D?g2d）?{
		g2d.setPaint（color）;//?為?Graphics2D?上下文設(shè)置?Paint?屬性。
		//?使用為?null?的?Paint?對象調(diào)用此方法對此?Graphics2D?的當(dāng)前?Paint?屬性沒有任何影響。

		g2d.setStroke（new?BasicStroke（stroke?BasicStroke.CAP_ROUND
				BasicStroke.JOIN_BEVEL））;
		//?setStroke（Stroke?s）為?Graphics2D?上下文設(shè)置?Stroke
		//?BasicStroke?類定義針對圖形圖元輪廓呈現(xiàn)屬性的一個(gè)基本集合
		//?BasicStroke.CAP_ROUND使用半徑等于畫筆寬度一半的圓形裝飾結(jié)束未封閉的子路徑和虛線線段
		//?BasicStroke.JOIN_BEVEL通過直線連接寬體輪廓的外角，將路徑線段連接在一起。
		g2d.drawLine（x1?y1?x2?y2）;//?畫直線

	}
}

class?Circle?extends?Drawing?{//?圓類
	private?static?final?long?serialVersionUID?=?4945502450819201865L;
	void?draw（Graphics2D?g2d）?{
		xLocation?=?Math.min（x1?x2）;
		yLocation?=?Math.min（y1?y2）;
		width?=?Math.max（Math.abs（x1?-?x2）?Math.abs（y1?-?y2））;
		heigh?=?Math.max（Math.abs（x1?-?x2）?Math.abs（y1?-?y2））;
		g2d.setPaint（color）;
		g2d.setStroke（new?BasicStroke（stroke））;
		g2d.drawOval（xLocation?yLocation?width?heigh）;
	}
}
class?fillCircle?extends?Drawing?{//?實(shí)心圓類
	private?static?final?long?serialVersionUID?=?4945502450819201865L;
	void?draw（Graphics2D?g2d）?{
		g2d.setPaint（color）;
		g2d.setStroke（new?BasicStroke（stroke））;
		g2d.fillOval（Math.min（x1?x2）?Math.min（y1?y2）?Math.max（Math.abs（x1
				-?x2）?Math.abs（y1?-?y2））?Math.max（Math.abs（x1?-?x2）?Math
				.abs（y1?-?y2）））;
	}
}

class?fillRect?extends?Drawing?{//?實(shí)心矩形類?刷新繪圖區(qū)
	private?static?final?long?serialVersionUID?=?4945502450819201865L;
	void?draw（Graphics2D?g2d）?{
		g2d.setPaint（Color.white）;
		g2d.fillRect（x1?y1?x2?y2）;
	}
}

class?Word?extends?Drawing?{//?輸入文字類
	private?static?final?long?serialVersionUID?=?4945502450819201865L;
	void?draw（Graphics2D?g2d）?{
		g2d.setPaint（color）;
		g2d.setFont（new?Font（s2?x2?+?y2?（（int）?stroke）?*?10））;//?設(shè)置字體
		if?（s1?!=?null）
			g2d.drawString（s1?x1?y1）;
	}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2010-06-17?16:27??最短路徑\
?????文件?????????301??2010-05-28?22:50??最短路徑\.classpath
?????文件?????????388??2010-05-28?22:50??最短路徑\.project
?????目錄???????????0??2010-05-28?22:50??最短路徑\.settings\
?????文件?????????629??2010-05-28?22:50??最短路徑\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2010-06-17?16:27??最短路徑\bin\
?????文件????????1067??2010-06-17?16:23??最短路徑\bin\Circle.class
?????文件????????1168??2010-06-17?16:23??最短路徑\bin\Drawing.class
?????文件????????6267??2010-06-17?11:10??最短路徑\bin\DrawJPanel$MouseA.class
?????文件????????1397??2010-06-17?11:10??最短路徑\bin\DrawJPanel$MouseB.class
?????文件????????5023??2010-06-17?11:10??最短路徑\bin\DrawJPanel.class
?????文件?????????979??2010-06-17?16:23??最短路徑\bin\fillCircle.class
?????文件?????????678??2010-06-17?16:23??最短路徑\bin\fillRect.class
?????目錄???????????0??2010-06-02?01:22??最短路徑\bin\images\
?????文件????????1186??2010-06-02?01:18??最短路徑\bin\images\clear.jpg
?????文件????????1221??2010-06-02?01:18??最短路徑\bin\images\newNode.jpg
?????文件????????1025??2010-06-02?01:19??最短路徑\bin\images\nodeLine.jpg
?????文件????????1428??2010-06-02?01:19??最短路徑\bin\images\nodeName.jpg
?????文件????????1305??2010-06-02?01:18??最短路徑\bin\images\nodeSpace.jpg
?????文件?????????875??2010-06-17?16:23??最短路徑\bin\Line.class
?????文件?????????628??2010-06-07?00:03??最短路徑\bin\ShortPath.class
?????文件???????27386??2010-06-17?16:27??最短路徑\bin\ShortPath.jar
?????文件?????????992??2010-05-30?16:45??最短路徑\bin\shortPath.properties
?????文件????????5966??2010-06-17?13:25??最短路徑\bin\ShortPathALG.class
?????文件????????9795??2010-06-17?11:24??最短路徑\bin\ShortPathframe.class
?????文件?????????892??2010-06-17?16:23??最短路徑\bin\Word.class
?????文件???????27386??2010-06-17?16:27??最短路徑\ShortPath.jar
?????文件?????????992??2010-05-30?16:45??最短路徑\shortPath.properties
?????目錄???????????0??2010-06-17?16:27??最短路徑\src\
?????文件????????3229??2010-06-17?16:23??最短路徑\src\Drawing.java
?????文件???????11470??2010-06-17?11:10??最短路徑\src\DrawJPanel.java
............此處省略11個(gè)文件信息