Java输出圆的体积

package 拖;

public class tuo {
	 
	    private String pdd;            // 定义变量圆
	    private double a;               // 定义变量半径a
	    private double b;               // 定义变量圆高b
	    double c=Math.PI;               // 圆周率c

	    // 输出圆的体积
	    void tiji(){
	        System.out.println(pdd+"的体积为："+(a*a*b*c));
	    }
	    // 输出圆的面积
	    void mianji(){
	        System.out.println(pdd+"的面积为："+(2*a*c*2+2*a*c*b));
	    }

	    public Yuan() {                // 无参构造
	    }

	    public Yuan(String pdd, double a, double b) {    //有参构造
	        this.pdd = pdd;
	        this.a = a;
	        this.b = b;
	    }

	    //   接收pdd，返回值pdd
	    public String getName() {
	        return pdd;
	    }

	    // 定义变量pdd
	    public void setName(String name) {
	        this.pdd = pdd;
	    }

	    public double getR() {
	        return a;
	    }

	    public void setR(double a) {
	        this.a = a;
	    }

	    public double getH() {
	        return b;
	    }

	    public void setH(double b) {
	        this.b = b;

//打印出值 }
	}

}