java.lang.Object
- java.lang.Enum<FocusEvent.Cause>
- - java.awt.event.FocusEvent.Cause

All Implemented Interfaces:

Serializable, Comparable<FocusEvent.Cause>

Enclosing class:

FocusEvent
```
public static enum FocusEvent.Cause
extends Enum<FocusEvent.Cause>
```
This enum represents the cause of a FocusEvent- the reason why it occurred. Possible reasons include mouse events, keyboard focus traversal, window activation. If no cause is provided then the reason is UNKNOWN.

Since:

9

Enum Constant Summary

Enum Constants
Enum Constant	Description
`ACTIVATION`	An activation of a toplevel window.
`CLEAR_GLOBAL_FOCUS_OWNER`	Clearing global focus owner.
`MOUSE_EVENT`	An activating mouse event.
`ROLLBACK`	Restoring focus after a focus request has been rejected.
`TRAVERSAL`	A focus traversal action with unspecified direction.
`TRAVERSAL_BACKWARD`	A backward focus traversal action.
`TRAVERSAL_DOWN`	A down-cycle focus traversal action.
`TRAVERSAL_FORWARD`	A forward focus traversal action.
`TRAVERSAL_UP`	An up-cycle focus traversal action.
`UNEXPECTED`	A system action causing an unexpected focus change.
`UNKNOWN`	The default value.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static FocusEvent.Cause`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static FocusEvent.Cause[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - UNKNOWN
```
public static final FocusEvent.Cause UNKNOWN
```
    The default value.
  - MOUSE_EVENT
```
public static final FocusEvent.Cause MOUSE_EVENT
```
    An activating mouse event.
  - TRAVERSAL
```
public static final FocusEvent.Cause TRAVERSAL
```
    A focus traversal action with unspecified direction.
  - TRAVERSAL_UP
```
public static final FocusEvent.Cause TRAVERSAL_UP
```
    An up-cycle focus traversal action.
  - TRAVERSAL_DOWN
```
public static final FocusEvent.Cause TRAVERSAL_DOWN
```
    A down-cycle focus traversal action.
  - TRAVERSAL_FORWARD
```
public static final FocusEvent.Cause TRAVERSAL_FORWARD
```
    A forward focus traversal action.
  - TRAVERSAL_BACKWARD
```
public static final FocusEvent.Cause TRAVERSAL_BACKWARD
```
    A backward focus traversal action.
  - ROLLBACK
```
public static final FocusEvent.Cause ROLLBACK
```
    Restoring focus after a focus request has been rejected.
  - UNEXPECTED
```
public static final FocusEvent.Cause UNEXPECTED
```
    A system action causing an unexpected focus change.
  - ACTIVATION
```
public static final FocusEvent.Cause ACTIVATION
```
    An activation of a toplevel window.
  - CLEAR_GLOBAL_FOCUS_OWNER
```
public static final FocusEvent.Cause CLEAR_GLOBAL_FOCUS_OWNER
```
    Clearing global focus owner.
- Method Detail
  - values
```
public static FocusEvent.Cause[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (FocusEvent.Cause c : FocusEvent.Cause.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static FocusEvent.Cause valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null

Enum FocusEvent.Cause

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

UNKNOWN

MOUSE_EVENT

TRAVERSAL

TRAVERSAL_UP

TRAVERSAL_DOWN

TRAVERSAL_FORWARD

TRAVERSAL_BACKWARD

ROLLBACK

UNEXPECTED

ACTIVATION

CLEAR_GLOBAL_FOCUS_OWNER

Method Detail

values

valueOf