Compiler construction using java javacc and yacc

The javac compiler is written entirely in Java, so it’s available for any platform that supports the Java runtime system. javac turns Java source code into a compiled class that contains Java bytecode.
By convention, source files are named with a .java extension; the resulting class files have a .class extension.

Compiler Construction Using Java, JavaCC, and Yacc covers every topic essential to learning compilers from the ground up and is accompanied by a powerful and flexible software package for evaluating projects as well as several tutorials, well-defined projects, and test cases.

Compiler Construction Using JavaTM, JavaCC, and Yacc provides substantial support for each project, many of which are incremental enhancements of previous projects.

JavaCC ( Java Compiler Compiler) is an open-source parser generator and lexical analyzer generator written in the Java programming language. JavaCC is similar to yacc in that it generates a parser from a formal grammar written in EBNF notation.
Unlike yacc, however, JavaCC generates top-down parsers.