1.问题分析

   新建的maven项目,在Java Resources下没有src/main/java

   The folder is already a source folder

  尝试新建source folder时,出现如下提示

  The folder is already a source folder

2.解决方案

  选中项目---右键 build path---configure build path---删除默认的jre---添加在Eclipse中自己配置的jre

  The folder is already a source folder

  windows---preferences---installed jres---查看修改或添加Eclipse环境中的jre

  The folder is already a source folder

   添加该maven项目的jre

  The folder is already a source folder

  The folder is already a source folder

  问题解决,出现了src/main/java

  The folder is already a source folder






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