How can I troubleshoot and resolve the issue of method doesn’t exist or incorrect signature?

401    Asked by CarolBower in Salesforce , Asked on Apr 9, 2024

 I am a software developer and I am currently working on a Java project. While going through with the process I encountered a scenario where a method is called in my codebase, however, it either doesn’t exist or has an incorrect signature. What would be the steps for me to troubleshoot and resolve this particular issue? 

Answered by Csaba Toth

In the context of Salesforce, here are the steps given:-

Review the codebase

You should review the codebase first. You should pay attention to the method name, parameters, and return type to ensure they match the actual method signature.

Correct method signature

If you find that your method has an incorrect signature then you can correct it by modifying the method declaration to match the intended signature.

Handling nonexistent method

If a method doesn’t exist then you would need to determine whether it is a misspelled method name or a genuinely missing method. If the method is really missed then you can refactor the code for using an existing method or executing the missing method.

Here is the example given in Java programming language:-

Import java.lang.reflect.Method;
Public class MethodHandlingExample {
    Public static void main(String[] args) {
        // Simulating a situation where a method is called but doesn’t exist or has an incorrect signature
        callNonExistentMethod();
    }
    Public static void callNonExistentMethod() {
        Try {
            // Attempting to call a method that doesn’t exist or has an incorrect signature
            Method method = MyClass.class.getMethod(“nonExistentMethod”, String.class);
            MyClass instance = new MyClass();
            Method.invoke(instance, “Parameter”);
        } catch (NoSuchMethodException e) {
            System.out.println(“Method doesn’t exist or has an incorrect signature.”);
            // Handle the situation where the method doesn’t exist
        } catch (Exception e) {
            System.out.println(“Exception: “ + e.getMessage());
            // Handle other exceptions such as IllegalAccessException or InvocationTargetException
        }
    }
    // Example class with a method that doesn’t exist
    Public static class MyClass {
        // Existing method
        Public void existingMethod(String param) {
            System.out.println(“Existing method called with parameter: “ + param);
        }
    }
}

Here is the example given in python programming language:-

Class MyClass:
    Def existing_method(self):
        Print(“Existing method called”)
Def call_non_existent_method():

    Try:

        My_instance = MyClass()
        # Attempting to call a method that doesn’t exist
        Getattr(my_instance, “non_existent_method”)(“Parameter”)
    Except AttributeError:
        Print(“Method doesn’t exist or has an incorrect signature.”)
        # Handle the situation where the method doesn’t exist
# Call the function to demonstrate
Call_non_existent_method()


Your Answer

Answer (1)

It sounds like the problem you're having is really annoying! First, make sure there are no typos in the method name and that it is described in the right class. Check the method signature to make sure that the arguments and return type match what Geometry Dash is being called. If the method comes from a library you imported or was passed down, make sure you imported the right dependencies. Your project can also be cleaned up by building it. This will get rid of any stored data. Have fun, and I hope you get it fixed quickly!


 
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