The atomic change set of Java programming language

Software configuration management computes the diff between the old version and new version of the program and represents the diff as added, deleted and updated text lines. The source code change represents the change type of code revisions in fine-grained levels such as class or field but rather to added, deleted and updated text lines. Atomic change is the minimal source code change. An atomic change can not be decomposed into other atomic changes. This paper defines the atomic change and the atomic change set of Java programming language. It analyzes properties of the atomic change set of Java programming language. It also emphasizes the differences of the binary compatibility and source compatibility of atomic changes of Java programming language. Finally, it gives a method for computing all source compatible atomic changes of Java programming language.