{"record":{"id":"d0790af4794727c1","repo":"apache/maven","slug":"provides-method-must-return-non-null-result-meth","errorCode":null,"errorMessage":"@Provides method must return non-null result, method {}","messagePattern":"@Provides method must return non-null result, method (.+?)","errorType":"exception","errorClass":"NullPointerException","httpStatus":null,"severity":"error","filePath":"impl/maven-di/src/main/java/org/apache/maven/di/impl/ReflectionUtils.java","lineNumber":316,"sourceCode":"    @SuppressWarnings(\"unchecked\")\n    public static <T> Binding<T> bindingFromMethod(Method method) {\n        method.setAccessible(true);\n        Binding<T> binding = Binding.to(\n                Key.ofType(method.getGenericReturnType(), ReflectionUtils.qualifierOf(method)),\n                args -> {\n                    try {\n                        Object instance;\n                        Object[] params;\n                        if (Modifier.isStatic(method.getModifiers())) {\n                            instance = null;\n                            params = args;\n                        } else {\n                            instance = args[0];\n                            params = Arrays.copyOfRange(args, 1, args.length);\n                        }\n                        T result = (T) method.invoke(instance, params);\n                        if (result == null) {\n                            throw new NullPointerException(\n                                    \"@Provides method must return non-null result, method \" + method);\n                        }\n                        return result;\n                    } catch (IllegalAccessException e) {\n                        throw new DIException(\"Not allowed to call method \" + method, e);\n                    } catch (InvocationTargetException e) {\n                        throw new DIException(\"Failed to call method \" + method, e.getCause());\n                    }\n                },\n                toDependencies(method.getDeclaringClass(), method));\n\n        Priority priority = method.getAnnotation(Priority.class);\n        if (priority != null) {\n            binding = binding.prioritize(priority.value());\n        }\n\n        return binding;\n    }","sourceCodeStart":298,"sourceCodeEnd":334,"githubUrl":"https://github.com/apache/maven/blob/e4093d4e120eac99d6bdce5ba67cace2f3085c97/impl/maven-di/src/main/java/org/apache/maven/di/impl/ReflectionUtils.java#L298-L334","documentation":"Error \"@Provides method must return non-null result, method {}\" thrown in apache/maven.","triggerScenarios":"Thrown at impl/maven-di/src/main/java/org/apache/maven/di/impl/ReflectionUtils.java:316 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e4093d4e120eac99d6bdce5ba67cace2f3085c97","analyzedAt":"2026-08-21T22:58:24.034Z","schemaVersion":2},"datasetVersion":"2026-08-21T23:17:16.201Z"}