Package containing dot character not being parsed correctly

Issue Type: Bug

In the src folder of a Java Gradle project, there's the package structure:

projectRoot/
└── src/
    ├── main/
    │   ├── java/
    │   │   └── javasnap.domain/
    │   │       └── cli/
    │   │           └── ClStringArgs.java
    └── test/
        ├── java/
        │   └── javasnap.domain/
        │       └── cli/
        │           └── ClStringArgsTest.java

The ClStringArgs.java and ClStringArgsTest.java file contains the package declaration:

package javasnap.domain.cli;

Which is resulting in the package delcaration being highlighted as an error by VScode in both the test and production source file:

The declared package "javasnap.domain.cli" does not match the expected package "" Java(536871240)

It's also highlighting any reference to the class ClStringArgs in both the production and test source code with the following error:

ClStringArgs cannot be resolved to a type Java(16777218)

Splitting the directory name containing the dot character into two separate directories with one nested within the other causes this error to go away.

This package naming is valid for Gradle (and Java) to be able to compile and run source code. Attempting to add a directory to the Java Source Path via VScode results in the following message:

Unsupported operation. Please use build.gradle file to manage the source directories of gradle project.

Source: Language Support for Java(TM) by Red Hat (Extension)

This source directory structure is the default structuring of Gradle builds and this package naming convention is valid and used by multiple Java libraries. Can this bug get fixed or the feature of being able to resolve package names containing the dot character correctly be added to the roadmap?

Extension version: 0.60.0
VS Code version: Code 1.44.2 (ff915844119ce9485abfe8aa9076ec76b5300ddd, 2020-04-16T17:07:18.473Z)
OS version: Darwin x64 18.7.0

使用所示的 Gradle 布局重现该错误，包括带点的 javasnap.domain 目录、ClStringArgs.java、ClStringArgsTest.java 和 build.gradle。首先跟踪扩展如何发现 Gradle Java 源代码目录；当包声明和引用能够无错误地解析，同时项目仍能编译和运行时，即表示完成。