2. 显示抽象类桌子子类圆桌和方桌面积1(cqupt)

2. 显示抽象类桌子子类圆桌和方桌面积1

【问题描述】请根据已知的程序代码，补全抽象类TableInfo，显示圆桌和方桌的信息。

【输入形式】无

【输出形式】

Round Table Area2826.0

Rect Table Area2400.0

【样例输入】

【样例输出】

【样例说明】

【评分标准】输出正确，满分

public class Test{
    public static void main(String[] args) 
    {
        TableInfo t1=new RoundTable (3, 100, 30.0);
        TableInfo t2=new RectangleTable(4, 100, 40.0, 60.0);
        System.out.println("Round Table Area" + t1.tableArea());
    System.out.println("Rect Table Area" + t2.tableArea());
    }
}

abstract class
 TableInfo{
    int legs;
    int hight;

    public  TableInfo( int legs,int hight){
        this.legs = legs;
        this.hight = hight;
    }

    public abstract double tableArea();
}

class RectangleTable extends TableInfo{
    private double len;
    private double width;

    public RectangleTable( int legs, int hight, double len, double width){
        super(legs,hight);
        this.len = len;
        this.width = width;
    }

    public double tableArea(){
        return len * width;
    }
}

class RoundTable extends TableInfo{
    private double r;

    public RoundTable( int legs, int hight, double r){
        super(legs, hight);
        this.r = r;
    }

    public double tableArea(){
         return 3.14 * r * r;
    }
}