JavaParser reading a src directory

Question

I've been using a CompilationUnit to parse Java files but now I'd like to parse all files within a directory.

I've tried the following however the compilation size is calculated as 0 when I expect it to be the number of Java files within the specified directory.

Path pathToSource = Paths.get("resources/src");
SourceRoot sourceRoot = new SourceRoot(pathToSource);
List<CompilationUnit> compilations = sourceRoot.getCompilationUnits();

Following the JavaDoc - https://www.javadoc.io/doc/com.github.javaparser/javaparser-core

score 2 · Accepted Answer · answered Oct 21 '19 at 12:50

You either have to add all the compilation units manually, or just call tryToParse() on the sourceRoot.

With this small modification, it found (almost*) all .java files below the SourceRoot.

Path pathToSource = Paths.get("resources/src");
SourceRoot sourceRoot = new SourceRoot(pathToSource);
sourceRoot.tryToParse();
List<CompilationUnit> compilations = sourceRoot.getCompilationUnits();

(* it did not support java modules, so it failed to parse my module-info.java).

score 0 · Answer 2 · answered Oct 21 '22 at 07:30

The pathToSource variable must refer to the root directory which corresponds to the root of the package structure of the source files it contains. For example, in a classic maven project, this variable should be initialized with the src/main/java directory.

JavaParser reading a src directory

2 Answers2