Java.lang.nosuchmethoderror: org.mockito.answers.get()lorg/mockito/stubbing/answer;

java.lang.NoSuchMethodError

The java.lang.NoSuchMethodError is a runtime error that occurs when a referenced method cannot be found during runtime, typically due to a version mismatch or missing dependency.

In the specific case of org.mockito.answers.get()lorg/mockito/stubbing/answer;, it refers to the inability to find the method get() with a return type of org.mockito.stubbing.Answer in the class org.mockito.answers.

Causes

• The method you are trying to call may not be available in the version of the library you are using.
• You may be missing a necessary dependency that contains the required method.
• There may be a conflict with different versions of the same library being used in the project.

Examples

Let's consider an example where you are using Mockito, a popular Java testing framework, and encounter this error.

            
                import org.mockito.Mock;
                import org.mockito.MockitoAnnotations;

                public class ExampleClass {

                    @Mock
                    private SomeDependency someDependency;

                    public void testMethod() {
                        MockitoAnnotations.initMocks(this);
                        // Use the mocked dependencies
                    }

                    public static void main(String[] args) {
                        ExampleClass example = new ExampleClass();
                        example.testMethod();
                    }
                }
            
        

In the example above, if your project has a version mismatch with the Mockito library, such as using an older version that does not have the get() method defined in org.mockito.answers, you may encounter the java.lang.NoSuchMethodError at runtime.

Solutions

• Verify that you are using the correct version of the library that contains the required method.
• Check your project's dependencies and ensure that all required libraries are included.
• If you have multiple versions of the same library in your project, resolve any conflicts by using only the required version.

By resolving the underlying cause of the error, you can fix the java.lang.NoSuchMethodError and ensure that the referenced method is available during runtime.