Generic Hacks

import java.util.LinkedList; 

public class LL <T> {

    public LinkedList<T> classes = new LinkedList<T>(); 
    public Stack<T> stacks = new Stack<>(); 

    public LL(T[] classes) {
        makeList(classes);
    }

    public LinkedList<T> makeList(T[] classes) {
        for (T data : classes) {
            this.classes.add(data); 
        }
        return this.classes; 
    }

    public LinkedList<T> getClasses() {
        return this.classes; 
    }

 

    public void makeStack(LinkedList<T> classes) {
        
        //System.out.println(classes.remove());
        stacks.push(classes.remove());
        stacks.push(classes.remove());
        System.out.println("Stack: " + stacks); 
    }


    public static void main(String[] args) {
        String[] myClass = new String[]{"CSA", "CSP"};
        LL<String> classReview = new LL<>(myClass); 
        System.out.println(classReview.getClasses());
        LinkedList<String> classLL = classReview.getClasses();
        classReview.makeStack(classLL); 
    }
}
LL.main(null)

[CSA, CSP]
Stack: [CSA, CSP]

import java.util.LinkedList; 

public class LL {

    public LinkedList<String> classes = new LinkedList<String>(); 
    public Stack<String> classesStack = new Stack<>(); 

    public LL() {
        makeList();
    }

    public LinkedList<String> makeList() {
        classes.add("CSA");
        classes.add("CSP");
        classes.add("Stats");
        classes.add("APUSH");
        classes.add("APEL");
        return classes; 
    }

    public LinkedList<String> getClasses() {
        return this.classes; 
    }


    public static void main(String[] args) {
        LL classReview = new LL(); 
        System.out.println(classReview.getClasses());
    }
}
LL.main(null)

[CSA, CSP, Stats, APUSH, APEL]