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                        /Java入门第二季 升级版

附带输入参数的作业代码

package com.imocc;

import java.util.*;

public abstract class Shape {

public abstract void Zc();

public abstract void Mj();

public class Rectangle extends Shape {

int c,k;

public Rectangle(int c,int k){

this.c=c;

this.k=k;

}

public void Zc() {

// TODO Auto-generated method stub

double Zc=2*(c+k);

System.out.println("长方形的周常为："+Zc);

}

public void Mj() {

// TODO Auto-generated method stub

double Mj=c*k;

System.out.println("长方形的面积："+Mj);

}

public class Circle extends Shape {

int r;

public Circle(int r){

this.r=r;

}

public void Zc() {

// TODO Auto-generated method stub

double Zc=r*2*3.14;

System.out.println("圆的周常为："+Zc);

}

public void Mj() {

// TODO Auto-generated method stub

double Mj = r * r * 3.14;

System.out.println("圆形的面积为：" + Mj);

}

public void main(String[] args) {

// TODO Auto-generated method stub

System.out.println("请输入圆的半径");

Scanner input = new Scanner(System.in);

int r = input.nextInt();

Shape z= new Circle(r);

z.Zc();

z.Mj();

System.out.println("请输入长方形的长和宽");

Scanner input1 = new Scanner(System.in);

int a = input1.nextInt();

Scanner input2 = new Scanner(System.in);

int b = input2.nextInt();

Shape z1=new Rectangle(a,b);

z1.Zc();

z1.Mj();

}

qq_时光老佡_04298173

2016-11-28

源自：Java入门第二季升级版 10-3

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qq_最冷一天_3
2016-12-16

package tuxing;

public abstract class Shaper {

	
	public abstract void area();
	public abstract void  perimeter();
  
	

}




package tuxing;

public class Rectangle extends Shaper {
     float chang,kuan;
     public void set(float chang,float kuan){
    	 this.chang=chang;
    	 this.kuan=kuan;
     }
     public float get(){
    	 return chang*kuan;
    	 }
     public float get2(){
    	 return (chang+kuan)*2;
     }
	@Override
	public void area() {
		// TODO Auto-generated method stub
	   Rectangle a=new Rectangle();
	   a.set(10.0f,20.0f);
	   System.out.println("矩形的面积是:"+a.get());
	}
	

	@Override
	public void perimeter() {
		// TODO Auto-generated method stub
		Rectangle b=new Rectangle();
		b.set(10.0f,20.0f);
		System.out.println("矩形的周长是:"+b.get2());
	}

}






package tuxing;

public class Circle extends Shaper {
     float banjing;
     public void set(float banjing){
    	 this.banjing=banjing;
     }
     public float get(){
    return banjing*banjing*3.14f;
    }
     public float get2(){
    	 return banjing*6.28f;
     }
	@Override
	public void area() {
		// TODO Auto-generated method stub
		Circle a=new Circle();
		a.set(10.0f);
       System.out.println("圆形的面积是:"+a.get());
	}

	@Override
	public void  perimeter() {
		// TODO Auto-generated method stub
		Circle a=new Circle();
		a.set(10.0f);
      System.out.println("圆形的周长是:"+a.get2());
	}

}




package tuxing;

public class Initial {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
   Shaper f=new Rectangle();
   f.area();
   f.perimeter();
   Shaper y=new Circle();
   y.area();
   y.perimeter();
	}

}