/**
 * Determines the inheritance tree for a given class
 *
 * @author Thomas Lee <tlee08@my.heartland.edu>
 *
 *
 *
 */

import java.util.Scanner;



public class Assignment2{



	public static void main (String[] args) throws ClassNotFoundException{

		System.out.println("Please enter a Java class to show the inheritance hierarchy for (ex - java.lang.Float): ");

		Scanner scan = new Scanner (System.in);

		String className = scan.nextLine();

		try{

			Class myClass = Class.forName(className);

			TopDownR(myClass);
			System.out.print("\n");
			BottomUpR(myClass);
			System.out.print("\n");
			TopDownL(myClass);
			System.out.print("\n");
			BottomUpL(myClass);

		}catch (Exception e){

			System.out.println("Invalid class name or no Superclass.");

		}

	}



	public static void TopDownR(Class myClass){

		if(myClass.getName().equals("java.lang.Object")){

			System.out.print("\n");

		}else{

			TopDownR(myClass.getSuperclass());
			System.out.print("The class " + myClass.getSuperclass().getName()

				+ " is the superclass of the " + myClass + "\n");

		}

	}

	public static void BottomUpR(Class myClass){
		if(myClass.getName().equals("java.lang.Object")){
			System.out.print("");
		}else{
			System.out.print("The " + myClass + " is a subclass of the class "
				+ myClass.getSuperclass().getName() + "\n");
			BottomUpR(myClass.getSuperclass());
		}

	}
//Problem method here
	public static void TopDownL(Class myClass){
		String[] classTree = new String[10];
		int i = 0;
		while(!(myClass.getName().equals("java.lang.Object"))){
			classTree[i] = ("The class " + myClass.getSuperclass().getName()

				+ " is the superclass of the " + myClass + "\n");
			System.out.print(classTree[i]);
			i++;
			myClass = myClass.getSuperclass();
		}
		for(i = classTree.length; i>=0; i--){
			System.out.print(classTree[i]);
		}
	}
//Loop works here
	public static void BottomUpL(Class myClass){
		while(!(myClass.getName().equals("java.lang.Object"))){
			System.out.print("The " + myClass + " is a subclass of the class "
				+ myClass.getSuperclass().getName() + "\n");
			myClass = myClass.getSuperclass();
		}
	}
}