Find if method is overloaded using Reflection

Question

There is similar question regarding this but in the answers the parameter types are used.

My question is that having a class what should be done to find out whether the method returned using reflection is overloaded or not?

Possible ways can be: 1) Looping to find the same method again

    List<Method> overloaded = new ArrayList<Method>();
    Method[] declaredMethods = A.class.getDeclaredMethods();

    for(int i = 0; i < declaredMethods.length; i++){
        for(int j = (i + 1); j < declaredMethods.length; j++){
            if(declaredMethods[j].getName().equals(declaredMethods[i].getName())){
                overloaded.add(declaredMethods[i]);
            }
        }
    }

    System.out.println(overloaded);

Is there some way to find out overloaded methods which has a better algorithmic complexity than this? Does some library provide the same functionality?

for better complexity, you could use a `Map>` where the keys are the names. — assylias, Mar 08 '13 at 11:17
why do you want to optimize it? i doubt that there is any need for further inprovement. leave it as it is. — AlexWien, Mar 08 '13 at 11:19
@AlexWien I did not necessarily wanted to optimize it but was just curious whether java or some other library can provide the same thing. — Narendra Pathai, Mar 08 '13 at 11:22

AlexWien · Answer 1 · 2013-03-08T11:28:29.153

2

You could use a Set. if the add() operation returns false the method name is already in the set.
Java Reflection has no method to determine whether a method is overloaded.

edited Mar 08 '13 at 11:28

answered Mar 08 '13 at 11:21

AlexWien

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Find if method is overloaded using Reflection

1 Answers1