SWING ActionEvent事件类
这个类定义在 java.awt.event包。按钮被点击时，会生成ActionEvent双击或列表中的项目。
类声明
以下是声明 java.awt.event.ActionEvent类：
public class ActionEvent extends AWTEvent
字段域
以下是java.awt.event.ActionEvent类字段域：
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static int ACTION_FIRST -- The first number in the range of ids used for action events.
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static int ACTION_LAST -- The last number in the range of ids used for action events.
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static int ACTION_PERFORMED -- This event id indicates that a meaningful action occured.
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static int ALT_MASK -- The alt modifier.
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static int CTRL_MASK -- The control modifier.
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static int META_MASK -- The meta modifier.
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static int SHIFT_MASK -- The shift modifier.
类构造函数
| S.N. | 构造函数 & 描述 |
|---|---|
| 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. |
类方法
| S.N. | 方法 & 描述 |
|---|---|
| 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. |
方法继承
这个类从以下类继承的方法：
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java.awt.AWTEvent
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java.util.EventObject
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java.lang.Object
