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Showing content from https://github.com/burningwave/core/wiki/Handling-privates-and-all-other-methods-of-an-object below:

Handling privates and all other methods of an object · burningwave/core Wiki · GitHub

For methods handling we are going to use Methods component; Methods component uses to cache all methods and all method handles for faster access.

import static org.burningwave.core.assembler.StaticComponentContainer.Classes;
import static org.burningwave.core.assembler.StaticComponentContainer.Methods;

import java.lang.invoke.MethodHandle;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.security.ProtectionDomain;
import java.util.Collection;

import org.burningwave.core.classes.MethodCriteria;


@SuppressWarnings("unused")
public class MethodsHandler {
    
    public static void execute() {
        //Invoking method by using reflection
        Methods.invoke(System.out, "println", "Hello World");

        //Invoking static method by using MethodHandle
        Integer number = Methods.invokeStaticDirect(Integer.class, "valueOf", 1);
        
        //Invoking method by using MethodHandle
        Methods.invokeDirect(System.out, "println", number);
        
        //Filtering and obtaining a MethodHandle reference
        MethodHandle methodHandle = Methods.findFirstDirectHandle(
            MethodCriteria.byScanUpTo((cls) ->
            //We only analyze the ClassLoader class and not all of its hierarchy (default behavior)
                cls.getName().equals(ClassLoader.class.getName())
            ).name(
                "defineClass"::equals
            ).and().parameterTypes(params -> 
                params.length == 3
            ).and().parameterTypesAreAssignableFrom(
                String.class, ByteBuffer.class, ProtectionDomain.class
            ).and().returnType((cls) -> 
                cls.getName().equals(Class.class.getName())
            ), ClassLoader.class
        );        
        
        //Filtering and obtaining all methods of ClassLoader class that have at least
        //one input parameter of Class type
        Collection<Method> methods = Methods.findAll(
            MethodCriteria.byScanUpTo((cls) ->
                //We only analyze the ClassLoader class and not all of its hierarchy (default behavior)
                cls.getName().equals(ClassLoader.class.getName())
            ).parameter((params, idx) -> {
                return Classes.isAssignableFrom(params[idx].getType(), Class.class);
            }), ClassLoader.class
        );
        methods.stream();
    }
    
    public static void main(String[] args) {
        execute();
    }
    
}

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