通过char Stack创建一个char并将其分配给标签。JavaFX

好吧，我已经尝试了很长时间了，以使这项工作生效。我下面的代码非常凌乱，无法正常运行atm，主要是为了展示我之前的尝试。

我需要什么帮助？我想创建一个Stack对象，该对象从文本字段中逐个字符读取（推送）一个字符，然后弹出并反向打印单词。应该自动考虑堆栈是后进先出（LIFO）。

 charStack stack = new charStack();
    String entering = textfield.getText();
    for(int i = 0; i < entering.length(); i++){
        //stack.push(i);
        char ch = entering.charAt(i);
        if(Character.isHighSurrogate(ch)){
          i++;
        if (i < entering.length()){
          stack.push(entering.charAt(i));
        }
        }
        stack.push(ch);
        while(entering.length() != 0){
        label.setText(stack.pop().toString());
    }
}

控制器：

public class FXMLDocumentController implements Initializable {

    @FXML
    private Label label;

    @FXML
    private TextField textfield;

    Stack<Character> stack = new Stack<>();

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        //label.textProperty().bind(textfield.textProperty());



    }    

    @FXML
    private void exeCute(ActionEvent event) {
       // String a = textfield.getText();
        //for (char c: a.toCharArray()){
          //  stack.push(c);

        //}

        //while(!stack.empty()){
          //  label.setText(stack.pop().toString());
        //}

        //char[] stack = textfield.getText().toCharArray();
        //char[] reverse = new char[stack.length];
        //int position = stack.length - 1;
        //for(int i = 0; i<stack.length; i++){
          //  reverse[i] = stack[position--];
        //}
        //System.out.print(reverse);
        //String newone = reverse.toString();
        //label.setText(newone); //Works (sort of) but need to do this with stack-object

        //String entering = textfield.getText();
        //for (int i = 0; i < entering.length(); i++){
          //  char ch = entering.charAt(i);
            //if(Character.isHighSurrogate(ch)){
              //  i++;
                //if (i < entering.length()){
                  //  stack.push(entering.charAt(i));
                //}
            //}
            //stack.push(ch);
            //System.out.print(stack.pop());  

        String e = textfield.getText();
            for (int i = 0; i < e.length(); i++){
            char ch = e.charAt(i);
            if(Character.isHighSurrogate(ch)){
                i++;
                if (i < e.length()){
                    stack.push(e.charAt(i));

                }
            }
            stack.push(ch);
            //stack.pop();
            //printStack(stack);


            }
    }
    private void printStack(Stack<Character> s){
        if (s.isEmpty()){
            System.out.println("Stack is empty!");
        }
        else {
            System.out.printf("%s TOP\n" + s);
        }
    }
}