Devoxx11: Jackpot 3.0 - Large Custom Refactorings

Jan Lahoda
Jackpot:

• originally from Sun labs
• uses the Abstract Syntax Tree (AST) --> knows java-language / syntax: smarter than simple regexp's
• ideal to refactor deprecated API's
• remove anti-patterns

Jackpot is now included in Netbeans 7.1

• use special 'Hint' syntax: Class.oldMethod => NewClass.newMethod ;;
• completely integrated in standard Netbeans hints / refactoring logic
  • hints are show in the IDE, directly to the developer
  • batch refactorings are allowed: completely integrated in the "Inspect and refactor" dialog (incl. managing hints)
  • run headless from the command line
• can be highly fine-tuned:
  • use instanceof checks
  • match on specific Java constructs: e.g. only look for Fields
  • check on target java version
  • combine multiple checks
  • write repeatable tests in ".test" file
• definitely worthwhile looking at for large refactorings of legace Java projects!