[問題]想使用Button 改 Frame title 的錯誤
我在Button設了event
想用它來改Frame的title
event的內容如下:
public void actionPerformed(ActionEvent e) {
System.out.println(e.getActionCommand());
f.setTitle(e.getActionCommand());
}
結果就出現:
at java.awt.Button.processActionEvent(Unknown Source)
at java.awt.Button.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
錯誤
剛學java沒多久
實在搞不清楚錯誤原因
希望有人可以教我解決辦法
或是告訴我錯誤原因
謝謝!!!
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06/22 23:02, , 1F
06/22 23:02, 1F