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17-备忘录模式.md
备忘录模式常常用来实现撤销和重做功能,比如在Java Swing GUI编程中,javax.swing.undo包中的撤销(undo)和重做(redo)机制使用了备忘录模式。UndoManager和UndoableEdit接口是与备忘录模式相关的主要类和接口。
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