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package,source folder,folder

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在eclipse下,package,source folder,folder都是文件夹. 

它们的区别如下: 
package:当你在建立一个package时,它自动建立到source folder下,也只能建立在这个目录之下. 

source folder:存放java源代码的文件夹,当然也包括一些package文件夹,还可以包含其他文件. 
项目构建后,source folder里面的java自动编译成class文件到相应的bin文件夹中,其他文件也会移到到相应的目录下. 

folder:里面可以放入任何文件.包括java源文件,jar文件,其他文件(例如,图片,声音等).在此我说明一下,如果里面含有java源文件,不管程序是否正确,eclipse都不会报错,把它们当做普通文件处理.但是项目如果要使用这里面的文件,情况就不同了. 

package,source folder,folder 之间相互转换
package 转成 folder 显示:选中package, build path-> Exclude
folder 转成 package 显示:选中folder, build path-> Include

package 转成 source folder 显示:选中package, build path-> Use as Source folder
source folder 转成 package 显示:选中folder, build path-> Remove from BuildPath

pacage 与 source folder 的转换同上

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1 楼 edge2009 2010-09-07  
曝光率太低了..

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