Source Code : Creating a Custom Event

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Creating a Custom Event

  


import java.util.EventListener;
import java.util.EventObject;

import javax.swing.event.EventListenerList;

class MyEvent extends EventObject {
  public MyEvent(Object source) {
    super(source);
  }
}

interface MyEventListener extends EventListener {
  public void myEventOccurred(MyEvent evt);
}

class MyClass {
  protected EventListenerList listenerList = new EventListenerList();

  public void addMyEventListener(MyEventListener listener) {
    listenerList.add(MyEventListener.class, listener);
  }
  public void removeMyEventListener(MyEventListener listener) {
    listenerList.remove(MyEventListener.class, listener);
  }
  void fireMyEvent(MyEvent evt) {
    Object[] listeners = listenerList.getListenerList();
    for (int i = 0; i < listeners.length; i = i+2) {
      if (listeners[i] == MyEventListener.class) {
        ((MyEventListener) listeners[i+1]).myEventOccurred(evt);
      }
    }
  }
}

public class Main {
  public static void main(String[] argv) throws Exception {
    MyClass c = new MyClass();
    c.addMyEventListener(new MyEventListener() {
      public void myEventOccurred(MyEvent evt) {
        System.out.println("fired");
      }
    });

  }
}

   
    
  

Thank with us