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COMPUTER SOFTWARE APPLICATION - CITS

public void actionPerformed(ActionEvent e) {
String command = e.getActionCommand();

if( command.equals( “OK” )) {
statusLabel.setText(“Ok Button clicked.”);
}
else if( command.equals( “Submit” ) ) {

statusLabel.setText(“Submit Button clicked.”);
}
else {
statusLabel.setText(“Cancel Button clicked.”);
}
}

}
}

Introduction to Event Handling Classes

EventObject class:-
It is 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. This class is defined in java.util package.
Class declaration
Following is the declaration for java.util.EventObject class:
public class EventObject extends Object implements Serializable Field Following are the fields for java.util.
EventObject class:
protected Object source -- The object on which the Event initially occurred.
Class constructors

Constructor & Description
EventObject(Object source)
Constructs a prototypical Event.
Class methods
Method & Description
Object getSource()

The object on which the Event initially occurred.
String toString()
Returns a String representation of this EventObject.
Methods inherited

This class inherits methods from the following classes:
java.lang.Object
AWT Event Classes:
Following is the list of commonly used event classes.

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CITS : IT&ITES - Computer Software Application - Lesson 116 - 119