用java实现的简单记事本，提供新建，保存，另存为，字体，颜色等功能，提供回文数，数字引文互译，统计单词数，文本求和等功能-Using java to achieve a simple notepad, offers New, Save, Save As, fonts, colors and other features, provides palindrome, digital citations translation, statistical number of words, text s