graphics.java

大学java作业源程序

package problem_8;
//Graphics.java
//图像类，抽象类
public abstract class Graphics {
	private String color;		//颜色
	private double weight;		//重量
	
	public Graphics(String color, double weight){
		this.color = color;
		this.weight = weight;
	}
	
	//返回颜色
	public String getColor(){
		return color;
	}
	
	//返回重量
	public double getWeight(){
		return weight;
	}
	
	//设置颜色
	public void setColor(String color){
		this.color = color;
	}
	
	//设置重量
	public void setWeight(double weight){
		this.weight = weight;
	}
	
	public abstract double calculatePerimeter();	//抽象计算周长函数
	public abstract double calculateArea();		//抽象计算面积函数
}