Is there any Java library to parse a simple grammar?

Question

I want to use Java to parse a very simple grammar, for example:

/*comments*/
"aaa" = "bbb"

That's all. I want all tokens (comment, string, equals).

Is there any Java library that can handle this?

Answer 1

You gonna have to write the base grammar that recognize everyone of these tokens and then generate the parser (lexical and syntaxic) with a tool like SableCC or JavaCC (They both produce Java classes). Then you'll have a parser that can parse your language.

I hope it is what you meant by parse a [...] grammar.

Answer 2

for really basic needs you can use either java.util.StringTokenizer or java.io.StreamTokenizer.