Write an application that creates on object of each class Circle, Square, Sphere

Question

Write an application that creates on object of each class Circle, Square, Sphere, and Cube, invoke their toString methods. The output should show the is-a relationship between that object's class and it's superclasses.

I have written eight applications and a program to satisfy this question. I am having problems calling the toString methods to display the output of the program or test. I need help with invoking multiple toString methods in one application. I have one out put and that output is from the Shape(super class). Can you help me?

// File name: Circle.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: Create object of the
// class Circle, Square, Sphere, and Cube, and invoke
// toString methods.

public class Circle extends TwoDimensionalShape
{
// set variable "name"
String name = "Circle";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
public String toString()
{
return String.format( "%s is a %s", this.name, super.toString() );
}

} // end class Circle
// File name: Square.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: Create object of the
// class Circle, Square, Sphere, and Cube, and invoke
// toString methods.

public class Square extends TwoDimensionalShape
{
// set variable "name"
String name = "Square";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
public String toString()
{
return String.format( "%s is a %s", this.name, super.toString() );
}

} // end class Square
// File name: ShapeTest.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: Create object of the
// class Circle, Square, Sphere, and Cube, and invoke
// toString methods.

public class ShapeTest
{
public static void main( String[] args )
{
Shape shape = new Shape();

System.out.printf( "%s %s %s %s %s %s %s %s",
shape.toString() );
} // end of main method
} // end of ShapeTest
// File name: Sphere.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: Create object of the
// class Circle, Square, Sphere, and Cube, and invoke
// toString methods.

public class Sphere extends ThreeDimensionalShape
{
// set variable "name"
String name = "Sphere";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
public String toString()
{
return String.format( "%s is a %s", this.name, super.toString() );
}

} // end class Sphere
// File name: Cube.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: Create object of the
// class Circle, Square, Sphere, and Cube, and invoke
// toString methods.

public class Cube extends ThreeDimensionalShape
{
// set variable "name"
String name = "Cube";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
public String toString()
{
return String.format( "%s is a %s", this.name, super.toString() );
}

} // end class Cube
// File name: TwoDimensionalShape.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: is-a relatonship

public class TwoDimensionalShape extends Shape
{
// set variable "name"
String name = "Two Dimensional Shape";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
@Override
public String toString()
{
return String.format( "%s is a %s", this.name, super.toString() );
}

} // end class TwoDimensionalShape
// File name: ThreeDimensionalShape.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: is-a relationship

public class ThreeDimensionalShape extends Shape
{
// set variable "name"
String name = "Three Dimensional Shape";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
@Override
public String toString()
{
return String.format( "%s is a %s", this.name, super.toString() );
}

} // end class ThreeDimensionalShape
// File name: Shape.java
// Programmer Name: Barbara A. Parson
// Class: IS 207
// Lab No: 1
// Exercise No: Coding Exercises 1, 2, 3.
// Brief Description of Project: is-a relationship

public class Shape
{
// set variable "name"
String name = "Shape";

// get name "value"
public String getName()
{
return name;
} // end method getName()

// return String representation of Shape object
public String toString()
{
return String.format( "%s is the superclass.", this.name );
}

} // end class Shape

Explanation / Answer

public static void main(String[] args)
{
      //create on object of each class Circle, Square, Sphere, and Cube
      Shape circle = new Circle();
      Shape square = new Square();
      Shape sphere = new Sphere();
      Shape cube = new Cube();

      // print each object
      System.out.println(circle); // printing circle automatically calls circle.toString()
      System.out.println(square):
      System.out.println(sphere);
      System.out.println(cube);
}

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