Can I automatically refactor an entire java project and rename uppercase method parameters to lowercase?
ide, intellij-idea, java, refactoring
Solution
Use a Source Parser
I think what you need to do is use a source code parser like javaparser to do this.
For every java source file, parse it to a CompilationUnit, create a Visitor, probably using ModifierVisitorAdapter as base class, and override (at least) `visit(MethodDeclaration, arg)`. Then write the changed CompilationUnit to a new File and do a diff afterwards.
I would advise against changing the original source file, but creating a shadow file tree may me a good idea (e.g. old file: `src/main/java/com/mycompany/MyClass.java`, new file `src/main/refactored/com/mycompany/MyClass.java`, that way you can diff the entire directories).
Problem
I'm working in a java project where a big part of the code was written with a formatting style that I don't like (and is also non standard), namely all method parameters are in uppercase (and also all local variables). On IntellJ I am able to use "Analyze -> Inspect Code" and actually find all occurrences of uppercase method parameters (over 1000). To fix one occurrence I can do "refactor > rename parameter" and it works fine (let's assume there is no overlapping). Is there a way to automagically doing this refactor (e.g: rename method parameter starting with uppercase to same name starting with lowercase)?