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/**

* Description:

* <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>

* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee

* <br/>This program is protected by copyright laws.

* <br/>Program Name:

* <br/>Date:

* @author Yeeku.H.Lee kongyeeku@163.com

* @version 1.0

*/

public class Triangle extends Shape

{

//定义三角形的三边

private double a;

private double b;

private double c;

public Triangle(String color , double a

, double b , double c)

{

super(color);

this.setSides(a , b , c);

}

public void setSides(double a , double b , double c)

{

if (a >= b + c || b >= a + c || c >= a + b)

{

System.out.println("三角形两边之和必须大于第三边");

return;

}

this.a = a;

this.b = b;

this.c = c;

}

//重写Shape类的的计算周长的抽象方法

public double calPerimeter()

{

return a + b + c;

}

//重写Shape类的的返回形状的抽象方法

public String getType()

{

return "三角形";

}

}