右键点击项目名->buildPath->configure Build Path 弹出设置窗口
选择选项卡Libraries->选中JRE System Library->
点击edit->选中Alternate JRE->选择jdk
点击finish,点击ok,即可出现src/main/java和src/test/java
右键点击项目名->buildPath->configure Build Path 弹出设置窗口
选择选项卡Libraries->选中JRE System Library->
点击edit->选中Alternate JRE->选择jdk
点击finish,点击ok,即可出现src/main/java和src/test/java