ReflectionUtil

import java.lang.reflect.Method;


@SuppressWarnings("rawtypes")
public class ReflectionUtil {
    @SuppressWarnings("unchecked")
    public static Object invokeStaticMethod(String className, String methodName, Object[] args) throws Exception {
        Class ownerClass = Class.forName(className);

        Method tMethod = null;
        tMethod = getMethod(ownerClass, methodName, args);
        if (tMethod == null) {
            Class[] argsClass = new Class[args.length];
            int i = 0;
            for (int j = args.length; i < j; i++) {
                argsClass[i] = args[i].getClass();
            }
            tMethod = ownerClass.getMethod(methodName, argsClass);
        }
        return tMethod.invoke(null, args);
    }
    
    /***
     * reflection invoke method
     * @param className
     * @param methodName
     * @param args
     * @return
     * @throws Exception
     */
    @SuppressWarnings("unchecked")
    public static Object invokeMethod(String className, String methodName, Object[] args) throws Exception {
        Class ownerClass = Class.forName(className);
        Method tMethod = null;
        
        tMethod = getMethod(ownerClass, methodName, args);
        if (tMethod == null) {
            Class[] argsClass = new Class[args.length];
            int i = 0;
            for (int j = args.length; i < j; i++) {
                argsClass[i] = args[i].getClass();
            }
            tMethod = ownerClass.getMethod(methodName, argsClass);
        }
        return tMethod.invoke(ownerClass.newInstance(), args);
    }

    private static Method getMethod(Class clazz, String methodName, Object[] args) {
        Method[] methods = clazz.getMethods();
        Method m = null;
        for (Method method : methods) {
            if (method.getName().equals(methodName)) {
                Class[] parameterTypes = method.getParameterTypes();
                if (method.getParameterTypes().length == args.length) {
                    for (int i = 0; i < parameterTypes.length; i++) {
                        if (! parameterTypes[i].isInstance(args[i])) {
                            break;
                        }
                        m = method;
                    }
                }
            }
        }
        return m;
    }
}