java - Timer swing Error (Duplicate others components)

Question

I'm working on a questions and answers game. I have an error because the Timer Swing duplicates other things it shouldn't, like Jlabel, JButton...

I have divided my game into 2 classes, a main one that is the menu where the name is put, and another where the questions and answers are executed. In this latter class I have the error

package prueba;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JLabel;
import javax.swing.Timer;

public class Tiempo {
      
    private int count = 60; 
    
    public void tiempo(JLabel texto_tiempo){ 
         
        Timer t;
        t = new Timer(500, new ActionListener(){
            
            public void actionPerformed(ActionEvent e) {
                
                count --;
                texto_tiempo.setText(Integer.toString(count));
                if(count == 0){
                    ((Timer) (e.getSource())).stop();
                }}         
        });        
        t.start();
    } 

Answer 1

等待大神答复