LAMBDAFICATOR: From Imperative to Functional Programming through Automated Refactoring Conference Proceeding uri icon



  • Java 8 introduces two functional features: lambda expressions and functional operations like map or filter that apply a lambda expression over the elements of a Collection. Refactoring existing code to use these new features enables explicit but unobtrusive parallelism and makes the code more succinct. However, refactoring is tedious (it requires changing many lines of code) and error-prone (the programmer must reason about the control-flow, data-flow, and side-effects). Fortunately, these refactorings can be automated. We present LAMBDAFICATOR, a tool which automates two refactorings. The first refactoring converts anonymous inner classes to lambda expressions. The second refactoring converts for loops that iterate over Collections to functional operations that use lambda expressions. In 9 open-source projects we have applied these two refactorings 1263 and 1595 times, respectively. The results show that LAMBDAFICATOR is useful. A video highlighting the main features can be found at:

publication date

  • January 1, 2013

Date in CU Experts

  • November 16, 2020 1:25 AM

Full Author List

  • Franklin L; Gyori A; Lahoda J; Dig D

author count

  • 4

Other Profiles

International Standard Book Number (ISBN) 13

  • 9781467330763

Additional Document Info

start page

  • 1287–1290

end page

  • 1287–1290