package b;

public interface ZuoBiao {

    double zuobiao();

}

package b;

public class Point implements ZuoBiao {

    double x;

    double y;

    double z;

    public double getX() {

        return x;

    }

    public void setX(double x) {

        this.x = x;

    }

    public double getY() {

        return y;

    }

    public void setY(double y) {

        this.y = y;

    }

    public double getZ() {

        return z;

    }

    public void setZ(double z) {

        this.z = z;

    }

    public double zuobiao() {

       System.out.println("显示坐标  "+"("+x+","+y+","+z+")");

       return 0;

    }

    public void yuandianjuli()

    {

        System.out.println("距原点的距离："+Math.sqrt(z*z+Math.sqrt(x*x+y*y)*Math.sqrt(x*x+y*y)));

    }

}

package b;

public class TestZuoBiao {

    public static void main(String[] args) {

        Point xyz=new Point();

        xyz.setX(3.0);

        xyz.setY(4.0);

        xyz.setZ(6.0);

        xyz.zuobiao();

        xyz.yuandianjuli();

    }

}