Picture of Two Objects

public class TestCone
{
  public static void main( String[] args ) 
  {
    Cone cone1 = new Cone( 2.5, 5.8 );
    System.out.println( "cone1 area: " + cone1.area() 
      + " volume: " + cone1.volume() );

    Cone cone2 = new Cone( 3.56, 2.12 );

    System.out.println( "cone2 area: " + cone2.area() 
      + " volume: " + cone2.volume() );
  }
}

In this program, two different Cone objects are constructed, each with different data, and two methods are invoked for each.

Each invoked method uses the data in the instance variables of the object that contains it.

The picture shows the situation just after the second object has been constructed according to the definition of Cone. Class TestCone contains the static main() method.