## Why is this an issue?

Correctly updating a `static` field from a non-static method is tricky to get right and could easily lead to bugs if there are multiple class instances and/or multiple threads in play. Ideally, `static` fields are only updated from `synchronized static` methods.

This rule raises an issue each time a `static` field is updated from a non-static method.

### Noncompliant code example

    public class MyClass {

      private static int count = 0;

      public void doSomething() {
        //...
        count++;  // Noncompliant
      }
    }

## Resources

### Standards

- STIG Viewer - Application Security and Development: V-222567 - The application must not be vulnerable to race conditions.