GenJar用来生成Jar文件是一个特殊的ANT任务.它依据于类与类之间的从属关系来生成Jar文件而不是简单地依据于一个目录中的内容.-GenJar used to generate the Jar file is a special ANT task. Based on the affiliation between classes to generate a Jar file rather than simply depending on the contents of a director