Calling setText within the constructor causes a NullPointerException.

import com.sun.java.swing.*;
import java.awt.*;

public class MyTest extends JFrame {

    public MyTest() {
        JPanel bottomPanel = new JPanel();
        setLayout(new BorderLayout());

        JTextField myTextField = new JTextField();
        myTextField.setText("Hello World");
        bottomPanel.add(myTextField);
        add(bottomPanel);
    }

    public static void main(String args[]) {
        MyTest myWindow = new MyTest();
        myWindow.setTitle("My JTextField Example");
        myWindow.pack();
        myWindow.show();
    }

}




java.lang.NulPointerException
        at com.sun.java.swing.text.JPlainView.lineToRect(JPlainView.java:305)
        at com.sun.java.swing.text.JPlainView.damageLineRange(JPlainView.java:297)
        at com.sun.java.swing.text.JPlainView.updateDamage(JPlainView.java:237)
        at com.sun.java.swing.text.JPlainView.removeUpdate(JPlainView.java:207)
        at com.sun.java.swing.text.JTextUI$JViewFactory.removeUpdate(JTextUI.java:352)
        at com.sun.java.swing.text.JTextUI$JTextView.removeUpdate(JTextUI.java:684)
        at com.sun.java.swing.text.JDocument.externalNotifyRemove(JDocument.java:497)
        at com.sun.java.swing.text.JDocument.remove(JDocument.java:137)
        at com.sun.java.swing.text.JTextComponent.setText(JTextComponent.java:313)
        at MyTest.<init>(MyTest.java:13)
        at MyTest.main(MyTest.java:19)