I have a JFrame that I want to close when I press the Esc key ...
Well, I did this:
public Cadastro() {
addKeyListener(this);
And then this:
public void keyTyped(KeyEvent evt) {
if(evt.getKeyCode() == KeyEvent.VK_ESCAPE){
dispose();
}
}
If you want to see the whole class:
package Classes;
import java.awt.Color;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
public class Cadastro extends javax.swing.JFrame implements KeyListener{
public Cadastro() {
initComponents();
setIcone();
new Connect().Open();
addKeyListener(this);
}
/**
* 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();
Título = new javax.swing.JTextField();
Editora = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
Altor = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
Comentário = new javax.swing.JTextArea();
jLabel5 = new javax.swing.JLabel();
Nota = new javax.swing.JComboBox();
BotaoEnviar = new javax.swing.JButton();
BotaoLimpar = new javax.swing.JButton();
aviso = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("Cadastro");
setResizable(false);
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosed(java.awt.event.WindowEvent evt) {
formWindowClosed(evt);
}
});
jLabel1.setText("Título");
Título.setFont(new java.awt.Font("Microsoft Sans Serif", 0, 11)); // NOI18N
Editora.setFont(new java.awt.Font("Microsoft Sans Serif", 0, 11)); // NOI18N
jLabel2.setText("Editora");
Altor.setFont(new java.awt.Font("Microsoft Sans Serif", 0, 11)); // NOI18N
jLabel3.setText("Altor(a)");
jLabel4.setText("Nota");
Comentário.setColumns(20);
Comentário.setFont(new java.awt.Font("Microsoft Sans Serif", 0, 11)); // NOI18N
Comentário.setLineWrap(true);
Comentário.setRows(5);
Comentário.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyTyped(java.awt.event.KeyEvent evt) {
ComentárioKeyTyped(evt);
}
});
jScrollPane1.setViewportView(Comentário);
jLabel5.setText("Comentários");
Nota.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "", "1", "2", "3", "4", "5" }));
BotaoEnviar.setText("Enviar");
BotaoEnviar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BotaoEnviarActionPerformed(evt);
}
});
BotaoLimpar.setText("Limpar");
BotaoLimpar.setToolTipText("Limpa os compos de texto.");
BotaoLimpar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BotaoLimparActionPerformed(evt);
}
});
aviso.setFont(new java.awt.Font("Microsoft Sans Serif", 0, 11)); // NOI18N
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)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1)
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(BotaoEnviar)
.addGap(72, 72, 72)
.addComponent(BotaoLimpar)
.addGap(78, 78, 78))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Editora, javax.swing.GroupLayout.PREFERRED_SIZE, 108, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(Título, javax.swing.GroupLayout.PREFERRED_SIZE, 108, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 20, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(Altor, javax.swing.GroupLayout.PREFERRED_SIZE, 108, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(Nota, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(29, 29, 29))
.addGroup(layout.createSequentialGroup()
.addComponent(aviso)
.addGap(0, 0, Short.MAX_VALUE))))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(Título, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3)
.addComponent(Altor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Editora, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2)
.addComponent(jLabel4)
.addComponent(Nota, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(51, 51, 51)
.addComponent(jLabel5))
.addGroup(layout.createSequentialGroup()
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BotaoLimpar)
.addComponent(BotaoEnviar))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 34, Short.MAX_VALUE)
.addComponent(aviso))
);
pack();
setLocationRelativeTo(null);
}// </editor-fold>
private void BotaoLimparActionPerformed(java.awt.event.ActionEvent evt) {
Título.setText(null);
Editora.setText(null);
Altor.setText(null);
Comentário.setText(null);
Nota.setSelectedIndex(0);
aviso.setText(null);
}
private void BotaoEnviarActionPerformed(java.awt.event.ActionEvent evt) {
ImageIcon ico = new ImageIcon(Cadastro.class.getResource("/Recursos/check.png"));
String T = Título.getText();
String A = Altor.getText();
String E = Editora.getText();
String N = "";
String C = Comentário.getText();
int select = Nota.getSelectedIndex();
switch(select){
case 0: N = "";
break;
case 1: N = "1";
break;
case 2: N = "2";
break;
case 3: N = "3";
break;
case 4: N = "4";
break;
case 5: N = "5";
break;
}
String query = "insert into tablivros ('Título', 'Altor', 'Editora', 'Comentário', 'Nota') values ('"+T+"', '"+A+"', '"+E+"', '"+C+"', '"+N+"')";
new Connect().Execute(query);
JOptionPane.showMessageDialog(null, "Livro cadastrado com sucesso!", "Cadastro", 0, ico);
}
private void formWindowClosed(java.awt.event.WindowEvent evt) {
new Connect().Close();
}
private void ComentárioKeyTyped(java.awt.event.KeyEvent evt) {
int c = Comentário.getText().length();
if(c > 16777215){
BotaoEnviar.setEnabled(false);
aviso.setText("Faça um comentário menor.");
aviso.setForeground(Color.red);
} else{
aviso.setText(null);
}
}
private void setIcone() {
setIconImage(Toolkit.getDefaultToolkit().getImage(Entrada.class.getResource("/Recursos/icone.png")));
}
@Override
public void keyTyped(KeyEvent evt) {
if(evt.getKeyCode() == KeyEvent.VK_ESCAPE){
dispose();
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Windows".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Cadastro.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Cadastro.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Cadastro.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Cadastro.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Pesquisa().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextField Altor;
private javax.swing.JButton BotaoEnviar;
private javax.swing.JButton BotaoLimpar;
private javax.swing.JTextArea Comentário;
private javax.swing.JTextField Editora;
private javax.swing.JComboBox Nota;
private javax.swing.JTextField Título;
private javax.swing.JLabel aviso;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JScrollPane jScrollPane1;
// End of variables declaration
@Override
public void keyPressed(KeyEvent e) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
@Override
public void keyReleased(KeyEvent e) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
But this is not working, what am I doing wrong?