一本Java编程方面的电子书籍，适用于初学或者能力较低的学者，基本知识较多，同时带有各个章节的演示文稿（PPT），学起来更方便容易。-A Java programming aspects of e-books for beginners or lower academic ability, more basic knowledge, at the same time with various sections of the presentation (PPT), more convenient