Java Method Call invoke(Optional method, Class clazz, Object... args)

Description

invoke

License

Apache License

Declaration

public static Optional<Object> invoke(Optional<Method> method, Class<?> clazz, Object... args) 

Method Source Code

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

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import java.util.Optional;

public class Main {
    public static Optional<Object> invoke(Optional<Method> method, Object o, Object... args) {
        if (method.isPresent())
            return Optional.of(invoke(method.get(), o, args));
        return Optional.empty();
    }//from w ww. j a va2  s  .  co m

    public static Optional<Object> invoke(Optional<Method> method, Class<?> clazz, Object... args) {
        try {
            return invoke(method, clazz.newInstance(), args);
        } catch (InstantiationException | IllegalAccessException e) {
            e.printStackTrace();
        }
        return Optional.empty();
    }

    public static Object invoke(Method method, Object o, Object... args) {
        try {
            return method.invoke(o, args);
        } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static Object invoke(Method method, Class<?> clazz, Object... args) {
        try {
            return invoke(method, clazz.newInstance(), args);
        } catch (InstantiationException | IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }
}

Related

1. invoke(Object targetObject, String method, Class[] paramTypes, Object[] paramValues)
2. invoke(Object targetObject, String methodName, Object... params)
3. invoke(Object thisObject, Method method)
4. invoke(ObjectName objectName, Object[] params, String[] signature, String operationName)
5. invoke(ObjectName objectName, String attribute, Object[] params, String[] signatur)
6. invoke(String className, String methodName, Class[] paramTypes, Object... params)
7. invoke(String cls_name, String method, Class[] param_cls, Object cls, Object[] params)
8. invoke(String method)
9. invoke(String methodName, Object obj)