Update/Fetch/Sync a JTextField input by user in a class to a JTextField of another class

Question

public class FormattedName extends javax.swing.JFrame {

/** Creates new form FormattedName */
public FormattedName() {
    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() {

    Formatted = new javax.swing.JTextField();
    NameOpt = new javax.swing.JButton();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    Formatted.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            FormattedActionPerformed(evt);
        }
    });

    NameOpt.setText("Name");
    NameOpt.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            NameOptActionPerformed(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()
            .addComponent(NameOpt)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
            .addComponent(Formatted, javax.swing.GroupLayout.PREFERRED_SIZE, 144, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addGap(21, 21, 21)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(NameOpt)
                .addComponent(Formatted, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addContainerGap(21, Short.MAX_VALUE))
    );

    pack();
}// </editor-fold>

private void FormattedActionPerformed(java.awt.event.ActionEvent evt) {
    // TODO add your handling code here:
}

private void NameOptActionPerformed(java.awt.event.ActionEvent evt) {
    // TODO add your handling code here:
    Opt option = new Opt();

}


/**
 * @param args the command line arguments
 */
public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {

        public void run() {
            new FormattedName().setVisible(true);
        }
    });
}
// Variables declaration - do not modify
private javax.swing.JTextField Formatted;
private javax.swing.JButton NameOpt;
// End of variables declaration

}

and another class

public class Opt extends javax.swing.JFrame {

/** Creates new form Opt */
public Opt() {
    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() {

    firstname = new javax.swing.JLabel();
    lastname = new javax.swing.JLabel();
    middleName = new javax.swing.JLabel();
    first_name = new javax.swing.JTextField();
    last_name = new javax.swing.JTextField();
    middlename = new javax.swing.JTextField();
    jButton1 = new javax.swing.JButton();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    firstname.setText("FirstName");

    lastname.setText("LastName");

    middleName.setText("MiddleName");

    first_name.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            first_nameActionPerformed(evt);
        }
    });

    last_name.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            last_nameActionPerformed(evt);
        }
    });

    jButton1.setText("OK");

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addGap(19, 19, 19)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                .addComponent(jButton1)
                .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                        .addComponent(middleName)
                        .addComponent(lastname)
                        .addComponent(firstname))
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                        .addComponent(first_name, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
                        .addComponent(last_name)
                        .addComponent(middlename))))
            .addContainerGap(22, 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(firstname)
                .addComponent(first_name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addGap(18, 18, 18)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(lastname)
                .addComponent(last_name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addGap(18, 18, 18)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                .addComponent(middleName)
                .addComponent(middlename, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
            .addComponent(jButton1)
            .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    );

    pack();
}// </editor-fold>

private void first_nameActionPerformed(java.awt.event.ActionEvent evt) {
    // TODO add your handling code here:
}

private void last_nameActionPerformed(java.awt.event.ActionEvent evt) {
    // TODO add your handling code here:
}

 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
    // TODO add your handling code here:
  String firstname =  first_name.getText();
    String lastname = last_name.getText();
    outputName = firstname + lastname;
}

/**
 * @param args the command line arguments
 */
public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {

        public void run() {
            new Opt().setVisible(true);
        }
    });
}

private String outputName;
// Variables declaration - do not modify
private javax.swing.JTextField first_name;
private javax.swing.JLabel firstname;
private javax.swing.JButton jButton1;
private javax.swing.JTextField last_name;
private javax.swing.JLabel lastname;
private javax.swing.JLabel middleName;
private javax.swing.JTextField middlename;
// End of variables declaration

}

how do i sync the input entered in class Opt textfield to textfield of class FormattedName w/ or w/o OK button event.

tried using get() but not working.

What you're probably looking for is called "Binding". Take a look at BBB (http://kenai.com/projects/betterbeansbinding/pages/Home) or JGoodies-Binding (http://www.jgoodies.com/downloads/libraries.html); personally I prefer the latter one, but opinions may differ. — jfpoilpret, Jun 09 '11 at 11:27

score 0 · Answer 1 · answered Jun 09 '11 at 10:41

0

Create a getter method in Opt that describes the text, something along the lines of

public String getFullName(){   
    return first_name.getText() + middelname.getText() + last_name.getText();  
}

You can use this in your nameOptActionPerformed()

private void nameOptActionPerformed(java.awt.event.ActionEvent evt) {
    Opt option = new Opt();
    option.setVisible(true);

}

You now have two choices

make the Opt class a modal JDialog instead of JFrame or
expose the event handling of the ok button to the FormattedName class.

Id personally go with the modal dialog.

answered Jun 09 '11 at 10:41

Captain Giraffe

14,407
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I add the getFullname() method in Opt class and in FormattedName class i add new Opt().getFullName(); under FormattedActionPerformed(java.awt.event.ActionEvent evt).still not working. – reukEN11 Jun 09 '11 at 10:56
@reukEN You need to let the user input something there first! Thats the reason for a modal dialog. i.e. wait for the window to close, then read the input. – Captain Giraffe Jun 09 '11 at 10:58
giraffe.i see.nope,i didnt change it to JDialog.i declared a private var called fullName in Opt then in getFullName(){ fullName = first_name.getText()...... ; return fullname } .in FormattedName, add Formatted.setText(new Opt().getFullName()); n still doesnt work.am i doing smthing wrong here?done this as i read about accessing var from other class.read also about observable n can it be applied here for a simple textoutput? – reukEN11 Jun 09 '11 at 11:11
@reukEN I suggest you edit your question to make it clear what your goals are. – Captain Giraffe Jun 09 '11 at 11:31

Update/Fetch/Sync a JTextField input by user in a class to a JTextField of another class

1 Answers1