java.util: public class: EventObject

java.util
public class: EventObject [javadoc | source]

java.lang.Object
   java.util.EventObject

All Implemented Interfaces:
Serializable

The root class from which all event state objects shall be derived.

All Events are constructed with a reference to the object, the "source", that is logically deemed to be the object upon which the Event in question initially occurred upon.

since: JDK1.1 -

Field Summary
protected transient Object	source	The object on which the Event initially occurred.

Constructor:

Constructor:
public EventObject(Object source) { if (source == null) throw new IllegalArgumentException("null source"); this.source = source; } Constructs a prototypical Event. Parameters: `source` - The object on which the Event initially occurred. Throws: `IllegalArgumentException` - if source is null. exception: `IllegalArgumentException` - if source is null.

 public EventObject(Object source) {
        if (source == null)
            throw new IllegalArgumentException("null source");
        this.source = source;
}

Constructs a prototypical Event.

Parameters:

source - The object on which the Event initially occurred.

Throws:

IllegalArgumentException - if source is null.

exception: IllegalArgumentException - if source is null.

Method from java.util.EventObject Summary:
getSource, toString

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from java.util.EventObject Detail:
public Object getSource() { return source; } The object on which the Event initially occurred.
public String toString() { return getClass().getName() + "[source=" + source + "]"; } Returns a String representation of this EventObject.

Method from java.util.EventObject Detail:

 public Object getSource() {
        return source;
}

The object on which the Event initially occurred.

 public String toString() {
        return getClass().getName() + "[source=" + source + "]";
}

Returns a String representation of this EventObject.