eclipse maven 依赖项在 maven 更新项目后移动到类路径下

Question

In a maven project in eclipse version 2019-12, in "Java Build Path", I dragged "Maven Dependencies" from "Classpath" to "Modulepath". But after clicked "Maven -> Update Project...", the "Maven Dependencies" is automatically moved under "Classpath" inside "Java Build Path". Is it a normal behavior in eclipse? Thanks.

Answer 1

Yes, the Maven Dependencies item is always shown under Classpath and moving to Modulepath has no effect.

This is a side effect of how classpath separation is implemented. If and only if there is a module-info.java file:

• JARs to be used in src/main/java and src/test/java (not only visible for test sources) are on the modulepath
• whereas test scope JARs (to be used in src/test/java ) are on the classpath .

For projects without a module-info.java file, all dependencies are added to the classpath.