AppForegroundEvent (Java SE 9 & JDK 9 )

java.lang.Object
- java.util.EventObject
- - java.awt.desktop.AppEvent
  - - java.awt.desktop.AppForegroundEvent

All Implemented Interfaces:

Serializable
```
public final class AppForegroundEvent
extends AppEvent
```
当应用程序成为前台应用程序时，发送的事件，以及何时不再是前台应用程序。

从以下版本开始：

9

另请参见：

AppForegroundListener.appRaisedToForeground(AppForegroundEvent) ， AppForegroundListener.appMovedToBackground(AppForegroundEvent) ， Serialized Form

Field Summary
- Fields inherited from class java.util.EventObject
  source

构造方法摘要

构造方法
Constructor	描述
`AppForegroundEvent()`	构造一个 `AppForegroundEvent`

方法摘要
- Methods inherited from class java.util.EventObject
  getSource, toString
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造方法详细信息
  - AppForegroundEvent
```
public AppForegroundEvent()
```
    构造一个 AppForegroundEvent