NotePadFrame.java

working on Lab below, what is need is in Java comments. Trying to complete this lab an another by 4 pm import java.awt.*; import java.awt.event.*; import javax.swing.*; public class NotePadFrame extends JFrame { // instance variables JButton openButton; JTextArea textArea; // Constructor public NotePadFrame() { add(dataPanel(), [login to view URL]); add(createControlPanel(), [login to view URL]); } // helper methods /** * Create the control panel for the south */ private JPanel createControlPanel() { JPanel panel = new JPanel(); JButton openFileButton = new JButton("Open File"); // need to create an OpenListener and register it with the button // ** add code here ==> // [login to view URL](openFileButton); return panel; } private JPanel dataPanel() { JPanel panel = new JPanel(); textArea = new JTextArea(20, 40);// set preferred size // 6 lines, 40 columns [login to view URL](true); // make it wrap [login to view URL]("Click button below to open file"); // set the contents JScrollPane scrollPane = new JScrollPane(textArea); // put TextArea in a scrollpane [login to view URL](ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS); [login to view URL](ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER); [login to view URL](scrollPane); return panel; } // inner classes /** * * Handle user events in an inner class ActionListener * Could be an ActionListerner or other type of * listener * */ class OpenListener implements ActionListener { public void actionPerformed(ActionEvent ae) { // add code to open a file using a file dialog // read it and add it to the JTextArea widget [login to view URL]("Ive been clicked"); } } }