How to use Event class of java?

[Protectors]

Hi friend,

I need you help to get solution over my java query which is related to the inbuilt classes. There are some classes which sounds very complicated functionality. I am unable to understand the 'Event class' of java. I am not aware about it's constructors also. If anyone posses good knowledge about the Event class of java, then please let me know the same. Please also provide suitable example for the same.

[opaper]

Event is a platform-independent class that encapsulates events from the platform's GUI in the Java 1.0 event model. In Java 1.1 and later versions, the Event class is maintained only for backwards compatibility. The information in this class description is provided for to assist java programmers in the converting Java 1.0 programs to the new event model. In the Java 1.0 event model, an event contains an id field that indicates what type of event it is and which other Event variables are relevant for the event.

[MindSpace]

Hi,

Please review following example which will demonstrate you the use of Event class:

import javax.swing.event.CaretListener;
import javax.swing.event.CaretEvent;

public class eventDM
 {

  public static void main(String[] anh) {
    JFrame ZT = new JFrame();
    ZT.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTextField textField1 = new JTextField();

    textField1.addCaretListener(new CaretListener() {

      public void caretUpdate(CaretEvent e) {
        System.out.println(e);

      }
    }

    ZT.add(new JScrollPane(textField1));

    ZT.setSize(400, 200);
    ZT.setVisible(true);
  }

}

[Modifier]

Hi friend,

To use Event class, you should be aware about following it's constructors:

• Event(Object target, long wn, int id, int x1, int y1, int key1, int modifier1, Object arg1)
• Event(Object target, long wn, int id, int x1, int y1, int key1, int modifier1)
• Event(Object target, int id1, Object arg1)

[Praetor]

Example of Event class:

import java.awt.event.ActionEvent;
import javax.swing.text.Element;
import javax.swing.text.ElementIterator;

public class EventSample {
  public static void main(String arygs[]) {
    JFrame GMQ = new JFrame("Element Example");
    GMQ.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JTextArea textArea = new JTextArea();
    JScrollPane scrollPane1 = new JScrollPane(textArea);

    JButton button004 = new JButton("Show Elements");
    ActionListener actionListener = new ActionListener() {
      public void actionPerformed(ActionEvent actionEvent) {
        Document document1 = textArea.getDocument();
        ElementIterator iterator = new ElementIterator(document);
        Element element1 = iterator.first();
        while (element != null) {
          System.out.println(element1.getStartOffset());
          element1 = iterator.next();
        }
      }
    };
    button004.addActionListener(actionListener);

    GMQ.add(scrollPane, BorderLayout.CENTER);
    GMQ.add(button004, BorderLayout.SOUTH);

    GMQ.setSize(200, 250);
    GMQ.setVisible(true);
  }
}

[Katty]

Hello friend,

Following are some fields available with Event class of java:

1. SCROLL_LINE_DOWN
2. WINDOW_DESTROY
3. WINDOW_DEICONIFY
4. SCROLL_PAGE_UP
5. KEY_ACTION_RELEASE
6. SCROLL_PAGE_DOWN