JTextField setText() does nothing

[jonasmin]

I have problem with setting the JTextField text. here you see some of
my code:

if (in1.getText().length() > 10){
JOptionPane.showMessageDialog(null, "Error", "Error",
JOptionPane.WARNING_MESSAGE);
in1.setText("");
}


in1 - JTextField. But when i axecute the program it does nothing. It
shows the WARNING_MESSAGE, but it does nothing with text. where can be
the problem?

 

[Knute Johnson]

I have problem with setting the JTextField text. here you see some of
my code:

if (in1.getText().length() > 10){
JOptionPane.showMessageDialog(null, "Error", "Error",
JOptionPane.WARNING_MESSAGE);
in1.setText("");
}


in1 - JTextField. But when i axecute the program it does nothing. It
shows the WARNING_MESSAGE, but it does nothing with text. where can be
the problem?

JOptionPane.showMessageDialog is modal so the in1.setText() won't get
executed until the dialog is closed.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class test {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame f = new JFrame("test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JTextField tf = new JTextField("Hello World");
f.add(tf,BorderLayout.CENTER);
JButton b = new JButton("Erase The Text");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JOptionPane.showMessageDialog(
null,"Error","Error",
JOptionPane.WARNING_MESSAGE);
tf.setText("");
}
});
f.add(b,BorderLayout.SOUTH);
f.pack();
f.setVisible(true);
}
});
}
}