The influence of the Java collection framework on overall energy consumption

Rui Pereira, Marco Couto, Joo Saraiva, Jácome Cunha, Joo Paulo Fernandes

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


This paper presents a detailed study of the energy consumption of the different Java Collection Framework (JFC) implementations. For each method of an implementation in this framework, we present its energy consumption when handling different amounts of data. Knowing the greenest methods for each implementation, we present an energy optimization approach for Java programs: based on calls to JFC methods in the source code of a program, we select the greenest implementation. Finally, we present preliminary results of optimizing a set of Java programs where we obtained 6.2% energy savings.
Original languageEnglish
Pages (from-to)15-21
Number of pages7
JournalProceedings - International Conference on Software Engineering
Publication statusPublished - 14 May 2016


  • Energy-aware software
  • green computing


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