restrict jtextfield to accept only numbers?

Question

What can I do to make the "sueldo, salud, AFP" textfields to accept only numbers?

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

}                                      

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    String sueldo = this.sueldo.getText();
    int sueldoInt = Integer.parseInt(sueldo);
    String salud = this.salud.getText();
    int saludInt = Integer.parseInt(salud);
    String afp = this.afp.getText();
    int afpInt = Integer.parseInt(afp);
    String otros = this.otros.getText();
    int otrosInt = Integer.parseInt(otros);

    double saludD = sueldoInt * (saludInt * 0.01);
    double afpD = sueldoInt * (afpInt * 0.01);

    int calcular = (int) (sueldoInt - saludD - afpD - otrosInt);

   JOptionPane.showMessageDialog(null,+calcular);

Use a JFormattedTextField or JSpinner for post validation, use a DocumentFilter for real time validation — MadProgrammer, Nov 12 '15 at 19:58

score 3 · Answer 1 · answered Nov 12 '15 at 19:53

3

You can use a JFormattedTextField with a MaskFormatter:

MaskFormatter formatter= new MaskFormatter("########");
JFormattedTextField textField = new JFormattedTextField(formatter);

answered Nov 12 '15 at 19:53

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restrict jtextfield to accept only numbers?

1 Answers1