在一個窗體上的上面放置兩個按鈕“Open”和“Save”,在一個JFrame的窗體上放置一個文本區,點擊“Open”按鈕,彈出打開對話框，選擇一個文件打開后，在文本區中顯示 “Opening:新建文本文檔.txt.”，若選擇了“取消”，則在文本區中顯示“Open command cancdlled by user.”,點擊“Save”按鈕,彈出保存對話框，選擇“保存”后，在文本區中顯示 “Saving:新建文本文檔.txt”，若選擇了“取消”，則在文本區中顯示Save command cancdlled by user
Documentation and source code Copyright (C) 1985 by Mark
E. Mallett permission is granted to distribute this document
and the code indiscriminately. Please leave credits in place,
and add your own as appropriate.
