Software Open Access
Subarno Banerjee; Lazaro Clapp; Manu Sridharan
NullAway is a tool to help eliminate NullPointerException
s (NPEs) in your Java code. To use NullAway, first add @Nullable
annotations in your code wherever a field, method parameter, or return value may be null
. Given these annotations, NullAway performs a series of type-based, local checks to ensure that any pointer that gets dereferenced in your code cannot be null
. NullAway is similar to the type-based nullability checking in the Kotlin and Swift languages, and the Checker Framework and Eradicate null checkers for Java.
NullAway is fast. It is built as a plugin to Error Prone and can run on every single build of your code. In our measurements, the build-time overhead of running NullAway is usually less than 10%. NullAway is also practical: it does not prevent all possible NPEs in your code, but it catches most of the NPEs we have observed in production while imposing a reasonable annotation burden.
Name | Size | |
---|---|---|
NullAway.zip
md5:75e5d0832a11be2694576dc28db1d7e2 |
1.3 MB | Download |
All versions | This version | |
---|---|---|
Views | 238 | 238 |
Downloads | 15 | 15 |
Data volume | 18.8 MB | 18.8 MB |
Unique views | 217 | 217 |
Unique downloads | 15 | 15 |