SWING - ActionEvent Class


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This class is defined in java.awt.event package. The ActionEvent is generated when button is clicked or the item of a list is double-clicked.

Class Declaration

Following is the declaration for java.awt.event.ActionEvent class −

public class ActionEvent
   extends AWTEvent

Field

Following are the fields for java.awt.event.ActionEvent class −

  • static int ACTION_FIRST − The first number in the range of IDs used for action events.

  • static int ACTION_LAST − The last number in the range of IDs used for action events.

  • static int ACTION_PERFORMED − This event ID indicates that a meaningful action has occured.

  • static int ALT_MASK − The alt modifier.

  • static int CTRL_MASK − The control modifier.

  • static int META_MASK − The meta modifier.

  • static int SHIFT_MASK − The shift modifier.

Class Constructors

Sr.No. Constructor & Description
1

ActionEvent(java.lang.Object source, int id, java.lang.String command)

Constructs an ActionEvent object.

2

ActionEvent(java.lang.Object source, int id, java.lang.String command, int modifiers)

Constructs an ActionEvent object with modifier keys.

3

ActionEvent(java.lang.Object source, int id, java.lang.String command, long when, int modifiers)

Constructs an ActionEvent object with the specified modifier keys and timestamp.

Class Methods

Sr.No. Method & Description
1

java.lang.String getActionCommand()

Returns the command string associated with this action.

2

int getModifiers()

Returns the modifier keys held down during this action event.

3

long getWhen()

Returns the timestamp of when this event occurred.

4

java.lang.String paramString()

Returns a parameter string identifying this action event.

Methods Inherited

This class inherits methods from the following classes −

  • java.awt.AWTEvent
  • java.util.EventObject
  • java.lang.Object

swing_event_classes.htm

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