Problema com JButton (Action performed)

Programação Java
#1

Bom dia galera !!!

Estou utilizando o NetBeans e faço a criação do JPanel. E de teste faço a criação de alguns JButton, porém o método de action performed não funciona. Depois de compilado e com a visualização da GUI o botão não funciona no click.

Um exemplo de linha de código se um dos botões de teste.

private void botaoActionPerformed(java.awt.event.ActionEvent evt) {

    JOptionPane.showMessageDialog(null, "Olá Mundo");

}
#2

Onde você está chamando o método botaoActionPerformed?
Posta o código completo da tela.

#4

Código gerado pela IDE do Netbeans:

/*

  • To change this license header, choose License Headers in Project Properties.
  • To change this template file, choose Tools | Templates
  • and open the template in the editor.
    */
    package apsj;

import javax.swing.JOptionPane;

/**
*

  • @author AlucardHell
    */
    public class Painel extends javax.swing.JPanel {

    /**

    • Creates new form Painel
      */
      public Painel() {
      initComponents();
      }

    /**

    • This method is called from within the constructor to initialize the form.

    • WARNING: Do NOT modify this code. The content of this method is always

    • regenerated by the Form Editor.
      */
      @SuppressWarnings(“unchecked”)
      //
      private void initComponents() {

      jScrollPane1 = new javax.swing.JScrollPane();
      textoarea = new javax.swing.JTextArea();
      botao = new javax.swing.JButton();

      textoarea.setColumns(20);
      textoarea.setFont(new java.awt.Font(“Serif”, 0, 18)); // NOI18N
      textoarea.setRows(5);
      textoarea.setToolTipText("");
      jScrollPane1.setViewportView(textoarea);

      botao.setText(“jButton1”);
      botao.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(java.awt.event.ActionEvent evt) {
      botaoActionPerformed(evt);
      }
      });

      javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
      this.setLayout(layout);
      layout.setHorizontalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
      .addGroup(layout.createSequentialGroup()
      .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
      .addGroup(layout.createSequentialGroup()
      .addGap(115, 115, 115)
      .addComponent(botao, javax.swing.GroupLayout.PREFERRED_SIZE, 247, javax.swing.GroupLayout.PREFERRED_SIZE))
      .addGroup(layout.createSequentialGroup()
      .addGap(33, 33, 33)
      .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 588, javax.swing.GroupLayout.PREFERRED_SIZE)))
      .addContainerGap(51, Short.MAX_VALUE))
      );
      layout.setVerticalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
      .addGroup(layout.createSequentialGroup()
      .addContainerGap()
      .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 117, javax.swing.GroupLayout.PREFERRED_SIZE)
      .addGap(51, 51, 51)
      .addComponent(botao, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
      .addContainerGap(52, Short.MAX_VALUE))
      );
      }//

    private void botaoActionPerformed(java.awt.event.ActionEvent evt) {

     JOptionPane.showMessageDialog(null, "Olá Mundo");

    }

    // Variables declaration - do not modify
    private javax.swing.JButton botao;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea textoarea;
    // End of variables declaration
    }