1.

package hhhhkj;

public class Shape {
	double area;
	double per;
	String coulor;
	public Shape(int area, int per, String coulor) {
		super();
		this.area = area;
		this.per = per;
		this.coulor = coulor;
	}
	public String getCoulor() {
		return coulor;
	}
	public void setCoulor(String coulor) {
		this.coulor = coulor;
	}
	public Shape(){
		super();
	}
	public double getArea() {
		return area;
	}
	public void setArea(int area) {
		this.area = area;
	}
	public double getPer() {
		return per;
	}
	public void setPer(int per) {
		this.per = per;
	}
	public void showall(){
		Shape r=new Shape();
		r.getArea();
		r.getCoulor();
		r.getPer();
		System.out.println("颜色为"+coulor);
		System.out.println("周长为"+per);
		System.out.println("面积为"+area);
	}
	
	

}

　　

package hhhhkj;

public class Rectangle  extends Shape{
	int width;
	double heigth;
	public void getarea(){
		area=width*heigth;
		System.out.println("面积为"+area);
		
	}
	public void getpers(){
		per=2*(width+heigth);
		System.out.println("周长为"+per);
		
	}
	public void showall1(){
		
		System.out.println("颜色为"+coulor);
		System.out.println("周长为"+per);
		System.out.println("面积为"+area);
		
	}
}

　　

package hhhhkj;

public class Circle extends Shape{
	int ridus=3;
	double pero;
	double areao;
	public void getper()
	{
		pero=2*3.14*ridus;
		System.out.println("周长为"+pero);
	}
	public void getarea(){
		areao=3.14*ridus*ridus;
		System.out.println("面积为"+areao);
		
			
		}
	public void showall(){
		
		System.out.println("周长为"+pero);
		System.out.println("面积为"+areao);
	}
}
	
	

　　测试类

package hhhhkj;

public class main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Shape s=new Shape();
		s.per=3.4;
		s.area=4.5;
		
		s.coulor="红色";
		s.showall();
		
		Rectangle t=new Rectangle();
		t.width=2;
		t.heigth=3.4;
		t.getarea();
	t.getpers();
		t.showall1();
		Circle o=new Circle();
		o.getarea();
		o.ridus=2;
		o.showall();
		
		
	}

}

　　2.