How to get Method Parameter names in Java 8 using reflection?

Question

Java 8 has the ability to acquire method parameter names using Reflection API.

1. How can I get these method parameter names?

2. As per my knowled

Answer 1

You can use Paranamer lib (https://github.com/paul-hammant/paranamer)

Sample code that works for me:

import com.thoughtworks.paranamer.AnnotationParanamer;
import com.thoughtworks.paranamer.BytecodeReadingParanamer;
import com.thoughtworks.paranamer.CachingParanamer;
import com.thoughtworks.paranamer.Paranamer;

Paranamer info = new CachingParanamer(new AnnotationParanamer(new BytecodeReadingParanamer()));

Method method = Foo.class.getMethod(...);
String[] parameterNames = info.lookupParameterNames(method);

If you use Maven then put this dependency in your pom.xml:

    com.thoughtworks.paranamer
    paranamer
    2.8