Can someone help me understand LinkedStack through java. I am also having difficulty writing the methods for:

public class LinkedStack implements StackInterface {

public LinkedStack() {

// TODO Auto-generated constructor stub

}

public boolean isEmpty() {

// TODO Auto-generated method stub

return false;

}

public void push(T newEntry) {

// TODO Auto-generated method stub

}

public T pop() {

// TODO Auto-generated method stub

return null;

}

public void clear() {

// TODO Auto-generated method stub

}

public T peek() {

// TODO Auto-generated method stub

return null;

}

}