Boa tarde. Tenho umas dúvidas num código que escrevi. Supostamente deveria mostrar todos os radio buttons inseridos através do JOptionPane antes de ter sido escrita a palavra Sair. O programa faz isso, mas se o fechar, voltar a executar e escrever Sair na primeira iteração do JOptionPane todos os radio buttons inseridos anteriormente desaparecem. Penso que seja algo a ver com a serialização dos objectos. Se me puderem dizer o que estou a fazer mal agradecia muito. Já tentei descobrir por mim mas não consegui.
Agradeço desde já toda a ajuda que me possam dar
Código:
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* Escolha_multipla2.java
*
* Created on 11/Jun/2010, 17:45:47
*/
package backoffice;
import java.awt.Container;
import java.awt.FlowLayout;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import javax.swing.ButtonGroup;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
/**
*
* @author
*/
public class Escolha_multipla2 extends javax.swing.JFrame implements Serializable {
/** Creates new form Escolha_multipla2 */
public Escolha_multipla2() {
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")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jSeparator1 = new javax.swing.JSeparator();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 14));
jLabel1.setText("Escolha múltipla");
jLabel2.setText("Modelo nº");
jTextField1.setColumns(5);
jButton1.setText("Adicionar Nova Pergunta");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("Anterior");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setText("Cancelar");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jSeparator1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 389, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 184, Short.MAX_VALUE)
.addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2)
.addComponent(jButton3))
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
ObjectOutputStream out;
ObjectInputStream in;
String resp = "";
JRadioButton rb1;
Container c = getContentPane();
c.setLayout(new FlowLayout());
ButtonGroup bg = new ButtonGroup();
ArrayList<JRadioButton> arr = new ArrayList<JRadioButton>();
int n = 0;
while (!resp.equals("Sair")) {
resp = JOptionPane.showInputDialog("Introduza uma hipótese de resposta");
if (!resp.equals("Sair")) {
rb1 = new JRadioButton(resp);
arr.add(rb1);
n++;
}
}
for (int i = 0; i < n; i++) {
bg.add(arr.get(i));
c.add(arr.get(i));
}
try {
out = new ObjectOutputStream(new FileOutputStream(System.getProperty("user.dir") + File.separator + "modelo.dat", true));
out.writeObject(c);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
Container c2 = getContentPane();
try {
in = new ObjectInputStream(new FileInputStream(System.getProperty("user.dir") + File.separator + "modelo.dat"));
c2 = (Container) in.readObject();
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
new Criar_modelo().setVisible(true);
this.setVisible(false);
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.exit(0);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Escolha_multipla2().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JSeparator jSeparator1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}