I have done two classes for this java program and I need the last part please help

Class: Cylinder

• Add code from:
  • Participation Activity - Class Declaration and Instance Variables
  • Participation Activity - Constructors and Instance Methods
• Add Instance Method: Set Units
  • Parameters: String
  • Return Type: void
• Add Instance Method: Set Material
  • Parameters: String
  • Return Type: void
• Add Instance Method: Set Height
  • Parameters: double
  • Return Type: void
• Add Instance Method: Set Radius
  • Parameters: double
  • Return Type: void

Class: Lab Activity Classes And Objects

Main Method

• Add declarations from Participation Activity - Using Constructors and Calling Instance Methods

1. Create Comment: Display Initial Values Display a description and the volume of Pin Display a description and the volume of Dowel
2. Create Comment: User Input Get user input for Pin Units Get user input for Pin Material Get user input for Pin Height Get user input for Pin Radius
3. Create Comment: Modifying Object Call the appropriate instance method to update the values of the Pin
4. Create Comment: Final Values Display a description and the volume of Pin Display a description and the volume of Dowel

here is the cylinder class

-----------------------------------------------------------------------------------------------------------------------------------------------

public class Cylinder { // VARIALBES private double radius; private double height; private String units; private String material; // CONSTRUCTORS public Cylinder() { radius = 1.0; height = 1.0; units = "inches"; material = "Aluminum"; } public Cylinder(double cylinderRadius, double cylinderHeight, String cylinderUnits, String cylinderMaterial) { radius = cylinderRadius; height = cylinderHeight; units = cylinderUnits; material = cylinderMaterial; } //METHODS public double volume() { return(height * Math.PI * Math.pow(radius, 2)); } public void setUnits(String newUnits) { units = newUnits; } public void setMaterial(String newMaterial) { material = newMaterial; } public void setHeight(double newHeight) { height = newHeight; } public void setRadius(double newRadius) { radius = newRadius; } } -------------------------------------------------------------------------------

here is the main class

import java.util.Scanner;

public class LabActivityClassesAndObjects { public static void main(String[] args) { // CONSTANTS // VARIABLES // ARRAYS // OBJECTS Cylinder pin = new Cylinder(); Cylinder dowel = new Cylinder(5, 40, "mm", "Oak"); Scanner keyBoardInput = new Scanner(System.in); // Initial Values System.out.println("Pin volume: " + pin.volume() + " mm^2"); System.out.println("Dowel volume: " + dowel.volume() + " mm^2"); // User Input System.out.println("Please enter the units: "); String units = keyBoardInput.nextLine(); System.out.println("Please enter the material: "); String material = keyBoardInput.nextLine(); System.out.println("Please enter the height: "); double height = keyBoardInput.nextDouble(); System.out.println("Please enter the radius: "); double radius = keyBoardInput.nextDouble(); // Modifying Object pin.setUnits(units); pin.setMaterial(material); pin.setHeight(height); pin.setRadius(radius); // FinalValues here is what I need help

1. Create Comment: Final Values Display a description and the volume of Pin Display a description and the volume of Dowel

} }