# 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. ``` --- Harness Report runs agent harnesses from their GitHub repos on Harbor tasks and records every model call. Every page is also `.md` and `.json`; index: https://harnessreport.com/llms.txt · MCP: https://harnessreport.com/mcp