# devopsgym / codegen__spotbugs__spotbugs-2694

- taskset: [devopsgym](https://harnessreport.com/tasks/devopsgym.md)
- difficulty: hard
- category: code-generation
- language: 
- runnable from the site: no
- agent timeout: 3000s

## Results by harness

_none yet_

## Instruction

```
This is a code generation task. You are expected to write working code that solves the described problem.
<issue>
      Version: 4.7.3

I found a false positive about the rule [NP_EQUALS_SHOULD_HANDLE_NULL_ARGUMENT](https://spotbugs.readthedocs.io/en/latest/bugDescriptions.html#np-equals-method-does-not-check-for-null-argument-np-equals-should-handle-null-argument).

In the example below, SpotBugs reports no warning. The `equals` method takes a parameter that is marked as `@javax.annotation.Nonnull` . So it obeys this rule correctly. 

```java
public class Test {
  public boolean equals(@javax.annotation.Nonnull Object a) {
    return a.hashCode() == this.hashCode();
  }
}
```

However, in the example below, SpotBugs reports a warning at line 3 if we use `@org.netbeans.api.annotations.common.NonNull` instead. Actually, `@javax.annotation.Nonnull` and `@org.netbeans.api.annotations.common.NonNull` are equivalent. So, this exmaple does not violate the rule NP_EQUALS_SHOULD_HANDLE_NULL_ARGUMENT and the warning is a false positive.

```java
public class Test {
  public boolean equals(@org.netbeans.api.annotations.common.NonNull Object a) { //report a warning, but it is an FP
    return a.hashCode() == this.hashCode();
  }
}

```

I use the cmd `spotbugs -textui -low -xml -output= report.xml -auxclasspath org.eclipse.jdt.annotation-2.2.700.jar Test.class`

</issue>
Focus on implementing the required functionality correctly and efficiently. Treat this as a programming challenge.
You are not allowed to read git history.
```
---
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