Sphere D=new Sphere(d);
D.Square();
D.Volum();
System.out.println(D.toString());
}
}
public class Sphere {
final double PI=3.14;
double V,S;
double d;
Sphere(double d){
this.d=d;
}
public void Volum(){
V=(4/3)*PI*(d/2)*(d/2)*(d/2);
}
public void Square(){
S=4*PI*(d/2)*(d/2);
}
public String toString(){
String s="";
String result1=Double.toString(S);
String result2=Double.toString(V);
s=("体积为："+result2+"面积为："+result1);
return s;
}
}
方法2
//Sphere.java
public class Sphere{
private double diameter;