rectangle .java

来自「精通java核心技术》随书源代码」· Java 代码 · 共 14 行

class Rectangle extends Figure
	{
	 	Rectangle(double a,double b)
	 	{
			super(a,b);
	 	}
	 		
	 	double area()
	 	{
	 		return dim1*dim2;
	 	}
	}