square.java

大学java作业源程序

package problem_8;
//Square.java
//正方形类，继承矩形类
public class Square extends Rectangular{
	private double sideLength;		//边长
	
	public Square(String color, double weight, double sideLength){
		super(color, weight, sideLength, sideLength);
		this.sideLength = sideLength;
	}
	
	//返回边长
	public double getSideLength(){
		return sideLength;
	}
	
	//设置边长
	public void setSideLength(double sideLength){
		this.sideLength = sideLength;
	}
	
	//抽象计算周长函数的实现
	public double calculatePerimeter(){
		return 4 * sideLength;
	}
	
	//抽象计算面积函数的实现
	public double calculateArea(){
		return sideLength * sideLength;
	}
}