[Solved] IDEA java compile error: Error:java: Compilation failed: internal java compiler error

There are two possible cases of error: Java: compilation failed: internal java compiler error.

1. The JDK version may be inconsistent

Check whether the following three parts are consistent.

Preferences -> Compiler -> Version setting SDK version in Java compiler

File -> Project Structure -> SDK version in project

File -> Project Structure -> Module -> Module SDK version in each module dependencies

2. The memory setting of the compilation environment may be insufficient.

Preferences -> Compiler -> Shared build process heap size

Increase the default memory of 700M.

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