Yes on Linux or Mac you can use VS Code but on Windows you should just use VS. The teacher did a really good job setting up VS Code to use on every OS but it's a pain seeing all those jsons setups. Just freaking teach how to write a simple CMake. He uses 3-space indent??? On some lines it's 4-space indent, but 2-space indent for return 0; ??

In contrast to IDEs such as IntelliJ IDEA, NetBeans, or Eclipse, the concept of a "Java project" is provided entirely by extensions, and is not a core concept in the base VS Code. When working with "Java projects" in VS Code, you must have the necessary extensions installed to work with those project files.

Verified by running java -version in Command Prompt and see if you get right version number. Then restart VS Code, configure java runtime and select jdk11 as Java Tooling Runtime-->JDK for Language Server. If still no jdk detected, please install other jdks like Configure Java Runtime page recommends: OpenJDK11. still, add jdk to PATH.