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As far as I know, the only way to parse Java source-code into an AST (Abstract Syntax Tree) is to use the Java Compiler Tree API: com.sun.source.tree
I have two questions:
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The Abstract Syntax Tree (AST) As mentioned, the Abstract Syntax Tree is the way that Eclipse looks at your source code: every Java source file is entirely represented as tree of AST nodes. These nodes are all subclasses of ASTNode . Every subclass is specialized for an element of the Java Programming Language.
The JavaParser library provides you with an Abstract Syntax Tree of your Java code. The AST structure then allows you to work with your Java code in an easy programmatic way.
Regarding your second question, there are dozens of Java parsers available in addition to Sun's. Here is a small sample:
My best advice is to try each of them to see which works best for your needs.
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