Module java.desktop
Package java.awt

Class Event

  • All Implemented Interfaces:
    Serializable
    @Deprecated(since="9")
public class Event
extends Object
implements Serializable
    Deprecated.
    It is recommended that AWTEvent and its subclasses be used instead
    NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

    Event is a platform-independent class that encapsulates events from the platform's Graphical User Interface 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 to assist programmers in 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.

    For keyboard events, key contains a value indicating which key was activated, and modifiers contains the modifiers for that event. For the KEY_PRESS and KEY_RELEASE event ids, the value of key is the unicode character code for the key. For KEY_ACTION and KEY_ACTION_RELEASE, the value of key is one of the defined action-key identifiers in the Event class (PGUP, PGDN, F1, F2, etc).

    Since:
    1.0
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int ACTION_EVENT
      Deprecated.
      This event indicates that the user wants some action to occur.
      static int ALT_MASK
      Deprecated.
      This flag indicates that the Alt key was down when the event occurred.
      Object arg
      Deprecated.
      An arbitrary argument of the event.
      static int BACK_SPACE
      Deprecated.
      The BackSpace key.
      static int CAPS_LOCK
      Deprecated.
      The Caps Lock key, a non-ASCII action key.
      int clickCount
      Deprecated.
      For MOUSE_DOWN events, this field indicates the number of consecutive clicks.
      static int CTRL_MASK
      Deprecated.
      This flag indicates that the Control key was down when the event occurred.
      static int DELETE
      Deprecated.
      The Delete key.
      static int DOWN
      Deprecated.
      The Down Arrow key, a non-ASCII action key.
      static int END
      Deprecated.
      The End key, a non-ASCII action key.
      static int ENTER
      Deprecated.
      The Enter key.
      static int ESCAPE
      Deprecated.
      The Escape key.
      Event evt
      Deprecated.
      The next event.
      static int F1
      Deprecated.
      The F1 function key, a non-ASCII action key.
      static int F10
      Deprecated.
      The F10 function key, a non-ASCII action key.
      static int F11
      Deprecated.
      The F11 function key, a non-ASCII action key.
      static int F12
      Deprecated.
      The F12 function key, a non-ASCII action key.
      static int F2
      Deprecated.
      The F2 function key, a non-ASCII action key.
      static int F3
      Deprecated.
      The F3 function key, a non-ASCII action key.
      static int F4
      Deprecated.
      The F4 function key, a non-ASCII action key.
      static int F5
      Deprecated.
      The F5 function key, a non-ASCII action key.
      static int F6
      Deprecated.
      The F6 function key, a non-ASCII action key.
      static int F7
      Deprecated.
      The F7 function key, a non-ASCII action key.
      static int F8
      Deprecated.
      The F8 function key, a non-ASCII action key.
      static int F9
      Deprecated.
      The F9 function key, a non-ASCII action key.
      static int GOT_FOCUS
      Deprecated.
      A component gained the focus.
      static int HOME
      Deprecated.
      The Home key, a non-ASCII action key.
      int id
      Deprecated.
      Indicates which type of event the event is, and which other Event variables are relevant for the event.
      static int INSERT
      Deprecated.
      The Insert key, a non-ASCII action key.
      int key
      Deprecated.
      The key code of the key that was pressed in a keyboard event.
      static int KEY_ACTION
      Deprecated.
      The user has pressed a non-ASCII action key.
      static int KEY_ACTION_RELEASE
      Deprecated.
      The user has released a non-ASCII action key.
      static int KEY_PRESS
      Deprecated.
      The user has pressed a normal key.
      static int KEY_RELEASE
      Deprecated.
      The user has released a normal key.
      static int LEFT
      Deprecated.
      The Left Arrow key, a non-ASCII action key.
      static int LIST_DESELECT
      Deprecated.
      An item in a list has been deselected.
      static int LIST_SELECT
      Deprecated.
      An item in a list has been selected.
      static int LOAD_FILE
      Deprecated.
      A file loading event.
      static int LOST_FOCUS
      Deprecated.
      A component lost the focus.
      static int META_MASK
      Deprecated.
      This flag indicates that the Meta key was down when the event occurred.
      int modifiers
      Deprecated.
      The state of the modifier keys.
      static int MOUSE_DOWN
      Deprecated.
      The user has pressed the mouse button.
      static int MOUSE_DRAG
      Deprecated.
      The user has moved the mouse with a button pressed.
      static int MOUSE_ENTER
      Deprecated.
      The mouse has entered a component.
      static int MOUSE_EXIT
      Deprecated.
      The mouse has exited a component.
      static int MOUSE_MOVE
      Deprecated.
      The mouse has moved with no button pressed.
      static int MOUSE_UP
      Deprecated.
      The user has released the mouse button.
      static int NUM_LOCK
      Deprecated.
      The Num Lock key, a non-ASCII action key.
      static int PAUSE
      Deprecated.
      The Pause key, a non-ASCII action key.
      static int PGDN
      Deprecated.
      The Page Down key, a non-ASCII action key.
      static int PGUP
      Deprecated.
      The Page Up key, a non-ASCII action key.
      static int PRINT_SCREEN
      Deprecated.
      The Print Screen key, a non-ASCII action key.
      static int RIGHT
      Deprecated.
      The Right Arrow key, a non-ASCII action key.
      static int SAVE_FILE
      Deprecated.
      A file saving event.
      static int SCROLL_ABSOLUTE
      Deprecated.
      The user has moved the bubble (thumb) in a scroll bar, moving to an "absolute" position, rather than to an offset from the last position.
      static int SCROLL_BEGIN
      Deprecated.
      The scroll begin event.
      static int SCROLL_END
      Deprecated.
      The scroll end event.
      static int SCROLL_LINE_DOWN
      Deprecated.
      The user has activated the line down area of a scroll bar.
      static int SCROLL_LINE_UP
      Deprecated.
      The user has activated the line up area of a scroll bar.
      static int SCROLL_LOCK
      Deprecated.
      The Scroll Lock key, a non-ASCII action key.
      static int SCROLL_PAGE_DOWN
      Deprecated.
      The user has activated the page down area of a scroll bar.
      static int SCROLL_PAGE_UP
      Deprecated.
      The user has activated the page up area of a scroll bar.
      static int SHIFT_MASK
      Deprecated.
      This flag indicates that the Shift key was down when the event occurred.
      static int TAB
      Deprecated.
      The Tab key.
      Object target
      Deprecated.
      The target component.
      static int UP
      Deprecated.
      The Up Arrow key, a non-ASCII action key.
      long when
      Deprecated.
      The time stamp.
      static int WINDOW_DEICONIFY
      Deprecated.
      The user has asked the window manager to de-iconify the window.
      static int WINDOW_DESTROY
      Deprecated.
      The user has asked the window manager to kill the window.
      static int WINDOW_EXPOSE
      Deprecated.
      The user has asked the window manager to expose the window.
      static int WINDOW_ICONIFY
      Deprecated.
      The user has asked the window manager to iconify the window.
      static int WINDOW_MOVED
      Deprecated.
      The user has asked the window manager to move the window.
      int x
      Deprecated.
      The x coordinate of the event.
      int y
      Deprecated.
      The y coordinate of the event.

    • Constructor Summary

      Constructors 
      Constructor Description
      Event​(Object target, int id, Object arg)
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      Event​(Object target, long when, int id, int x, int y, int key, int modifiers)
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      Event​(Object target, long when, int id, int x, int y, int key, int modifiers, Object arg)
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.

    • Method Summary

      Modifier and Type Method Description
      boolean controlDown()
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      boolean metaDown()
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      protected String paramString()
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      boolean shiftDown()
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      String toString()
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.
      void translate​(int dx, int dy)
      Deprecated.
      NOTE: The Event class is obsolete and is available only for backwards compatibility.

    • Field Detail

      • SHIFT_MASK

        public static final int SHIFT_MASK
        Deprecated.
        This flag indicates that the Shift key was down when the event occurred.
        See Also:
        Constant Field Values

      • CTRL_MASK

        public static final int CTRL_MASK
        Deprecated.
        This flag indicates that the Control key was down when the event occurred.
        See Also:
        Constant Field Values

      • META_MASK

        public static final int META_MASK
        Deprecated.
        This flag indicates that the Meta key was down when the event occurred. For mouse events, this flag indicates that the right button was pressed or released.
        See Also:
        Constant Field Values

      • ALT_MASK

        public static final int ALT_MASK
        Deprecated.
        This flag indicates that the Alt key was down when the event occurred. For mouse events, this flag indicates that the middle mouse button was pressed or released.
        See Also:
        Constant Field Values

      • HOME

        public static final int HOME
        Deprecated.
        The Home key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • END

        public static final int END
        Deprecated.
        The End key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • PGUP

        public static final int PGUP
        Deprecated.
        The Page Up key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • PGDN

        public static final int PGDN
        Deprecated.
        The Page Down key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • UP

        public static final int UP
        Deprecated.
        The Up Arrow key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • DOWN

        public static final int DOWN
        Deprecated.
        The Down Arrow key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • LEFT

        public static final int LEFT
        Deprecated.
        The Left Arrow key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • RIGHT

        public static final int RIGHT
        Deprecated.
        The Right Arrow key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F1

        public static final int F1
        Deprecated.
        The F1 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F2

        public static final int F2
        Deprecated.
        The F2 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F3

        public static final int F3
        Deprecated.
        The F3 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F4

        public static final int F4
        Deprecated.
        The F4 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F5

        public static final int F5
        Deprecated.
        The F5 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F6

        public static final int F6
        Deprecated.
        The F6 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F7

        public static final int F7
        Deprecated.
        The F7 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F8

        public static final int F8
        Deprecated.
        The F8 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F9

        public static final int F9
        Deprecated.
        The F9 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F10

        public static final int F10
        Deprecated.
        The F10 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F11

        public static final int F11
        Deprecated.
        The F11 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • F12

        public static final int F12
        Deprecated.
        The F12 function key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • PRINT_SCREEN

        public static final int PRINT_SCREEN
        Deprecated.
        The Print Screen key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • SCROLL_LOCK

        public static final int SCROLL_LOCK
        Deprecated.
        The Scroll Lock key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • CAPS_LOCK

        public static final int CAPS_LOCK
        Deprecated.
        The Caps Lock key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • NUM_LOCK

        public static final int NUM_LOCK
        Deprecated.
        The Num Lock key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • PAUSE

        public static final int PAUSE
        Deprecated.
        The Pause key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • INSERT

        public static final int INSERT
        Deprecated.
        The Insert key, a non-ASCII action key.
        See Also:
        Constant Field Values

      • BACK_SPACE

        public static final int BACK_SPACE
        Deprecated.
        The BackSpace key.
        See Also:
        Constant Field Values

      • WINDOW_DESTROY

        public static final int WINDOW_DESTROY
        Deprecated.
        The user has asked the window manager to kill the window.
        See Also:
        Constant Field Values

      • WINDOW_EXPOSE

        public static final int WINDOW_EXPOSE
        Deprecated.
        The user has asked the window manager to expose the window.
        See Also:
        Constant Field Values

      • WINDOW_ICONIFY

        public static final int WINDOW_ICONIFY
        Deprecated.
        The user has asked the window manager to iconify the window.
        See Also:
        Constant Field Values

      • WINDOW_DEICONIFY

        public static final int WINDOW_DEICONIFY
        Deprecated.
        The user has asked the window manager to de-iconify the window.
        See Also:
        Constant Field Values

      • WINDOW_MOVED

        public static final int WINDOW_MOVED
        Deprecated.
        The user has asked the window manager to move the window.
        See Also:
        Constant Field Values

      • KEY_PRESS

        public static final int KEY_PRESS
        Deprecated.
        The user has pressed a normal key.
        See Also:
        Constant Field Values

      • KEY_RELEASE

        public static final int KEY_RELEASE
        Deprecated.
        The user has released a normal key.
        See Also:
        Constant Field Values

      • KEY_ACTION

        public static final int KEY_ACTION
        Deprecated.
        The user has pressed a non-ASCII action key. The key field contains a value that indicates that the event occurred on one of the action keys, which comprise the 12 function keys, the arrow (cursor) keys, Page Up, Page Down, Home, End, Print Screen, Scroll Lock, Caps Lock, Num Lock, Pause, and Insert.
        See Also:
        Constant Field Values

      • KEY_ACTION_RELEASE

        public static final int KEY_ACTION_RELEASE
        Deprecated.
        The user has released a non-ASCII action key. The key field contains a value that indicates that the event occurred on one of the action keys, which comprise the 12 function keys, the arrow (cursor) keys, Page Up, Page Down, Home, End, Print Screen, Scroll Lock, Caps Lock, Num Lock, Pause, and Insert.
        See Also:
        Constant Field Values

      • MOUSE_DOWN

        public static final int MOUSE_DOWN
        Deprecated.
        The user has pressed the mouse button. The ALT_MASK flag indicates that the middle button has been pressed. The META_MASK flag indicates that the right button has been pressed.
        See Also:
        ALT_MASK, META_MASK, Constant Field Values

      • MOUSE_UP

        public static final int MOUSE_UP
        Deprecated.
        The user has released the mouse button. The ALT_MASK flag indicates that the middle button has been released. The META_MASK flag indicates that the right button has been released.
        See Also:
        ALT_MASK, META_MASK, Constant Field Values

      • MOUSE_MOVE

        public static final int MOUSE_MOVE
        Deprecated.
        The mouse has moved with no button pressed.
        See Also:
        Constant Field Values

      • MOUSE_ENTER

        public static final int MOUSE_ENTER
        Deprecated.
        The mouse has entered a component.
        See Also:
        Constant Field Values

      • MOUSE_EXIT

        public static final int MOUSE_EXIT
        Deprecated.
        The mouse has exited a component.
        See Also:
        Constant Field Values

      • MOUSE_DRAG

        public static final int MOUSE_DRAG
        Deprecated.
        The user has moved the mouse with a button pressed. The ALT_MASK flag indicates that the middle button is being pressed. The META_MASK flag indicates that the right button is being pressed.
        See Also:
        ALT_MASK, META_MASK, Constant Field Values

      • SCROLL_LINE_UP

        public static final int SCROLL_LINE_UP
        Deprecated.
        The user has activated the line up area of a scroll bar.
        See Also:
        Constant Field Values

      • SCROLL_LINE_DOWN

        public static final int SCROLL_LINE_DOWN
        Deprecated.
        The user has activated the line down area of a scroll bar.
        See Also:
        Constant Field Values

      • SCROLL_PAGE_UP

        public static final int SCROLL_PAGE_UP
        Deprecated.
        The user has activated the page up area of a scroll bar.
        See Also:
        Constant Field Values

      • SCROLL_PAGE_DOWN

        public static final int SCROLL_PAGE_DOWN
        Deprecated.
        The user has activated the page down area of a scroll bar.
        See Also:
        Constant Field Values

      • SCROLL_ABSOLUTE

        public static final int SCROLL_ABSOLUTE
        Deprecated.
        The user has moved the bubble (thumb) in a scroll bar, moving to an "absolute" position, rather than to an offset from the last position.
        See Also:
        Constant Field Values

      • SCROLL_BEGIN

        public static final int SCROLL_BEGIN
        Deprecated.
        The scroll begin event.
        See Also:
        Constant Field Values

      • SCROLL_END

        public static final int SCROLL_END
        Deprecated.
        The scroll end event.
        See Also:
        Constant Field Values

      • LIST_SELECT

        public static final int LIST_SELECT
        Deprecated.
        An item in a list has been selected.
        See Also:
        Constant Field Values

      • LIST_DESELECT

        public static final int LIST_DESELECT
        Deprecated.
        An item in a list has been deselected.
        See Also:
        Constant Field Values

      • ACTION_EVENT

        public static final int ACTION_EVENT
        Deprecated.
        This event indicates that the user wants some action to occur.
        See Also:
        Constant Field Values

      • LOAD_FILE

        public static final int LOAD_FILE
        Deprecated.
        A file loading event.
        See Also:
        Constant Field Values

      • SAVE_FILE

        public static final int SAVE_FILE
        Deprecated.
        A file saving event.
        See Also:
        Constant Field Values

      • GOT_FOCUS

        public static final int GOT_FOCUS
        Deprecated.
        A component gained the focus.
        See Also:
        Constant Field Values

      • LOST_FOCUS

        public static final int LOST_FOCUS
        Deprecated.
        A component lost the focus.
        See Also:
        Constant Field Values

      • target

        public Object target
        Deprecated.
        The target component. This indicates the component over which the event occurred or with which the event is associated. This object has been replaced by AWTEvent.getSource()
        See Also:
        EventObject.getSource()

      • when

        public long when
        Deprecated.
        The time stamp. Replaced by InputEvent.getWhen().
        See Also:
        InputEvent.getWhen()

      • id

        public int id
        Deprecated.
        Indicates which type of event the event is, and which other Event variables are relevant for the event. This has been replaced by AWTEvent.getID()
        See Also:
        AWTEvent.getID()

      • x

        public int x
        Deprecated.
        The x coordinate of the event. Replaced by MouseEvent.getX()
        See Also:
        MouseEvent.getX()

      • y

        public int y
        Deprecated.
        The y coordinate of the event. Replaced by MouseEvent.getY()
        See Also:
        MouseEvent.getY()

      • key

        public int key
        Deprecated.
        The key code of the key that was pressed in a keyboard event. This has been replaced by KeyEvent.getKeyCode()
        See Also:
        KeyEvent.getKeyCode()

      • modifiers

        public int modifiers
        Deprecated.
        The state of the modifier keys. This is replaced with InputEvent.getModifiers() In java 1.1 MouseEvent and KeyEvent are subclasses of InputEvent.
        See Also:
        InputEvent.getModifiers()

      • clickCount

        public int clickCount
        Deprecated.
        For MOUSE_DOWN events, this field indicates the number of consecutive clicks. For other events, its value is 0. This field has been replaced by MouseEvent.getClickCount().
        See Also:
        MouseEvent.getClickCount()

      • arg

        public Object arg
        Deprecated.
        An arbitrary argument of the event. The value of this field depends on the type of event. arg has been replaced by event specific property.

      • evt

        public Event evt
        Deprecated.
        The next event. This field is set when putting events into a linked list. This has been replaced by EventQueue.
        See Also:
        EventQueue

    • Constructor Detail

      • Event

        public Event​(Object target,
             long when,
             int id,
             int x,
             int y,
             int key,
             int modifiers,
             Object arg)
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Creates an instance of Event with the specified target component, time stamp, event type, x and y coordinates, keyboard key, state of the modifier keys, and argument.

        Parameters:
        target - the target component.
        when - the time stamp.
        id - the event type.
        x - the x coordinate.
        y - the y coordinate.
        key - the key pressed in a keyboard event.
        modifiers - the state of the modifier keys.
        arg - the specified argument.

      • Event

        public Event​(Object target,
             long when,
             int id,
             int x,
             int y,
             int key,
             int modifiers)
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Creates an instance of Event, with the specified target component, time stamp, event type, x and y coordinates, keyboard key, state of the modifier keys, and an argument set to null.

        Parameters:
        target - the target component.
        when - the time stamp.
        id - the event type.
        x - the x coordinate.
        y - the y coordinate.
        key - the key pressed in a keyboard event.
        modifiers - the state of the modifier keys.

      • Event

        public Event​(Object target,
             int id,
             Object arg)
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Creates an instance of Event with the specified target component, event type, and argument.

        Parameters:
        target - the target component.
        id - the event type.
        arg - the specified argument.

    • Method Detail

      • translate

        public void translate​(int dx,
                      int dy)
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Translates this event so that its x and y coordinates are increased by dx and dy, respectively.

        This method translates an event relative to the given component. This involves, at a minimum, translating the coordinates into the local coordinate system of the given component. It may also involve translating a region in the case of an expose event.

        Parameters:
        dx - the distance to translate the x coordinate.
        dy - the distance to translate the y coordinate.

      • shiftDown

        public boolean shiftDown()
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Checks if the Shift key is down.

        Returns:
        true if the key is down; false otherwise.
        See Also:
        modifiers, controlDown(), metaDown()

      • controlDown

        public boolean controlDown()
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Checks if the Control key is down.

        Returns:
        true if the key is down; false otherwise.
        See Also:
        modifiers, shiftDown(), metaDown()

      • metaDown

        public boolean metaDown()
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Checks if the Meta key is down.

        Returns:
        true if the key is down; false otherwise.
        See Also:
        modifiers, shiftDown(), controlDown()

      • paramString

        protected String paramString()
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Returns a string representing the state of this Event. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

        Returns:
        the parameter string of this event

      • toString

        public String toString()
        Deprecated.
        NOTE: The Event class is obsolete and is available only for backwards compatibility. It has been replaced by the AWTEvent class and its subclasses.

        Returns a representation of this event's values as a string.

        Overrides:
        toString in class Object
        Returns:
        a string that represents the event and the values of its member fields.
        Since:
        1.1
        See Also:
        paramString()