如何使jframe的标题栏更改为特定文本字段中的任何文本？我一直在网上寻找一个相关的解决方案，但不幸的是，我看到的结果没有解决这个问题。非常感谢所有相关帮助。

import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

public class Frame extends javax.swing.JFrame {

    public Frame() {
        initComponents();
    }

    @SuppressWarnings("unchecked")

    private void initComponents() {

        jTextFieldTitle = new javax.swing.JTextField();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTextFieldTitle.setText("jTextField1");

        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(156, 156, 156)
                .addComponent(jTextFieldTitle, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(185, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(65, 65, 65)
                .addComponent(jTextFieldTitle, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(215, Short.MAX_VALUE))
        );

        pack();
    }

    public static void main(String args[]) {

        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Frame().setVisible(true);
            }
        });

        DocumentListener documentListener = new DocumentListener() {
            public void changedUpdate(DocumentEvent documentEvent) {
                jFrame.setTitle(jTextFieldTitle.getText());
            }

            public void insertUpdate(DocumentEvent documentEvent) {
                jFrame.setTitle(jTextFieldTitle.getText());
            }

            public void removeUpdate(DocumentEvent documentEvent) {
                jFrame.setTitle(jTextFieldTitle.getText());
            }
        };
        jTextFieldTitle.getDocument().addDocumentListener(documentListener);
    }

    // Variables declaration - do not modify                     
    private javax.swing.JTextField jTextFieldTitle;
    // End of variables declaration                   
}