Dataflow Analysis

IntelliJ IDEA provides Dataflow Analysis features to help you with code archeology - better understand the inherited project code, interpret complicated parts of the code, find bottlenecks in the source, and more.

Specifically, Dataflow to/from here features allow you to:

• See where do values assigned to a variable come from.
• Find out what are all possible values the variable can have.
• Find out what are the places this expression\variable\method parameter can flow into.
• Reveal places where potential NullPointerException can arise.

To learn how to run dataflow analysis and review its results, refer to the section Analyzing Data Flow.