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This article series contain information about how to construct a compiler from scratch. The compiler will implement the mini-java language. The purpose is to capture the knowledge taught on 4.semeste in computer science at Aalborg university.

The following parts will be discribed:

1. The mini-java grammar and semantics
2. Construction of a lexer and a parser
3. Construction of an abstract syntax tree and how to decorate it
4. Code generation
5. Walkthrough of the whole compiler implemented in Java