Creating Objects of a Class : Defining Class « Class Definition « Java Tutorial

1. Java Tutorial
2. Class Definition
3. Defining Class

class Sphere {
  double radius; // Radius of a sphere

  Sphere() {

  }

  // Class constructor
  Sphere(double theRadius) {
    radius = theRadius; // Set the radius

  }

}

public class MainClass {
  public static void main(String[] arg){
    Sphere sp = new Sphere();
    
  }

}