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Why is this JTextField not showing the contents?


Why is this JTextField not showing the contents?

By : user2951172
Date : November 18 2020, 01:01 AM
it fixes the issue The showInputDialog() method returns the value that was entered by the user. You should capture it into a variable. For example, do this:
code :
String userInputString = JOptionPane.showInputDialog("Enter Code Here");


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Updating the contents of a JTextField so that it keeps refreshing everything?

Updating the contents of a JTextField so that it keeps refreshing everything?


By : user307091
Date : March 29 2020, 07:55 AM
Hope this helps Assuming that the port is closed outside the Event Dispatch Thread, you should use SwingUtilities to set the text of the JTextField instance to reflect the availability status change.
code :
// we're outside the EDT
SwingUtilities.invokeLater(new Runnable(){
    @Override
    public void run(){
        // modify Swing component here
    }
});
Retrieving JTextField Contents Like Scanner

Retrieving JTextField Contents Like Scanner


By : dwj11
Date : March 29 2020, 07:55 AM
it should still fix some issue Add an ActionListener to the text field. When the text field has focus and the user presses Enter an event will be fired. See How to Write an Action Listener for more details.
Printing contents of JTextField

Printing contents of JTextField


By : aldekuzan.com
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Use keyReleased instead of keyPressed and keyTyped. Looks like the event triggers when the key is pressed, but before the field is updated. With keyTyped, it works for deleting characters that are currently in the field, but you would still need to enter 2 characters to get your button to work again.
code :
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextArea;


public class TextField extends JFrame {

        JTextArea inputField;
        JButton    submit;

        public TextField()
        {
                this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                inputField = new JTextArea("hi");
                submit = new JButton("Submit");
                inputField.addKeyListener(new KeyListener() {

                        @Override
                        public void keyPressed(KeyEvent arg0) {
                                //func(arg0);
                        }

                        @Override
                        public void keyReleased(KeyEvent arg0) {
                                func(arg0);
                        }

                        @Override
                        public void keyTyped(KeyEvent arg0) {
                                //func(arg0);
                        }
                });
                this.setLayout(new GridLayout(0,1));
                this.add(inputField);
                this.add(submit);
                this.pack();
                this.setVisible(true);
        }

        void func(KeyEvent arg0)
        {
            System.out.println(inputField.getText() + "length: " + inputField.getText().trim().length()); // test input
            if(inputField.getText().trim().length() == 0)
                submit.setEnabled(false);

            if(arg0.getKeyCode() == KeyEvent.VK_ENTER) {
                if(inputField.getText().trim().length() == 0)
                        System.out.println("error");
                else
                    System.out.println("success");
                return;
            }
            if(inputField.getText().trim().length() > 0) {
                submit.setEnabled(true);
            }
        }

        public static void main(String [] args)
        {
                new TextField();
        }
}
Swapping JTextField contents

Swapping JTextField contents


By : user3807894
Date : March 29 2020, 07:55 AM
may help you . I have one Jframe which includes two TextFields and I want to exchange two integer numbers after clicking on exchange button. , Get the value from one text box and store it in the other.
code :
private void jButtonActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    String temp = jTextField1.getText();
    jtextField1.setText(jTextField2.getText());
    jtextField2.setText(temp);

}                                        
// Variables declaration - do not modify                     
private javax.swing.JButton jButton;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
Search an arraylist by the contents of a JTextField - arraylist.contains(jtextfield)

Search an arraylist by the contents of a JTextField - arraylist.contains(jtextfield)


By : PHP777
Date : March 29 2020, 07:55 AM
this one helps. Call 'getText' on the JTextField to get the string that they've entered. You'll basically do something like the following.
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