Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.lang.reflect.Method;

import java.util.LinkedList;
import java.util.List;

public class Main {
    /**
     * Returns an array of all methods in a class with the specified parameter types.
     *
     * The return type is optional, it will not be compared if it is {@code null}.
     * Use {@code void.class} if you want to search for methods returning nothing.
     */
    public static Method[] findMethodsByExactParameters(Class<?> clazz, Class<?> returnType,
            Class<?>... parameterTypes) {
        List<Method> result = new LinkedList<Method>();
        for (Method method : clazz.getDeclaredMethods()) {
            if (returnType != null && returnType != method.getReturnType())
                continue;

            Class<?>[] methodParameterTypes = method.getParameterTypes();
            if (parameterTypes.length != methodParameterTypes.length)
                continue;

            boolean match = true;
            for (int i = 0; i < parameterTypes.length; i++) {
                if (parameterTypes[i] != methodParameterTypes[i]) {
                    match = false;
                    break;
                }
            }

            if (!match)
                continue;

            method.setAccessible(true);
            result.add(method);
        }
        return result.toArray(new Method[result.size()]);
    }

    /**
     * Return an array with the classes of the given objects
     */
    public static Class<?>[] getParameterTypes(Object... args) {
        Class<?>[] clazzes = new Class<?>[args.length];
        for (int i = 0; i < args.length; i++) {
            clazzes[i] = (args[i] != null) ? args[i].getClass() : null;
        }
        return clazzes;
    }
}