Question

求，用java编写一个求圆、长方形、正方形的面积和周长的程序((要求使用类、对象的方式实现)

Answer 1

class ChangFangXing{
private int length;
private int width;

public ChangFangXing(){}

public void setLength(int length){
this.length = length;
}
public void setWidth(int width){
this.width = width;
}
//求周长
public int getZhouChang(){
return (length + width)*2;
}
public int getArea(){
return length * width;
}

}
class ChangFangXingDemo{
public static void main(String[] args){
ChangFangXing s = new ChangFangXing();
s.setLength(5);
s.setWidth(6);

System.out.println("长方形的周长为："+s.getZhouChang());
System.out.println("长方形的面积为："+s.getArea());

}
}

Answer 2

你留个邮箱，发给你。