Java Method Call invoke(Object obj, String methodName)

Description

invoke

License

Apache License

Declaration

public static Object invoke(Object obj, String methodName) 

Method Source Code

//package com.java2s;
/*//w  w  w.  ja  v  a 2s .  co m
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.lang.reflect.Method;

public class Main {
    public static Object invoke(Object obj, String methodName) {
        Class clazz = obj.getClass();
        Method method = null;
        try {
            method = clazz.getMethod(methodName);
        } catch (Exception e) {
            throw new RuntimeException("Can not get the method[" + methodName + "] from the class["
                    + clazz.getName() + "]! caused by: " + e.getMessage(), e);
        }
        try {
            return method.invoke(obj);
        } catch (Exception e) {
            throw new RuntimeException("Unexpected exception occurs while invoking the method[" + methodName
                    + "] in the class[" + clazz.getName() + "]! caused by: " + e.getMessage(), e);
        }
    }
}

Related

1. invoke(Object obj, Method method, Object[] args)
2. invoke(Object obj, Method method, Object[] params)
3. invoke(Object obj, String method, Class[] params, Object[] args)
4. invoke(Object obj, String method, Class[] params, Object[] args)
5. invoke(Object obj, String method, Object param, Object paramType)
6. invoke(Object obj, String methodName, boolean newValue)
7. invoke(Object obj, String methodName, Class argType, Object arg)
8. invoke(Object obj, String methodName, Class clazz, Object newValue)
9. invoke(Object obj, String methodName, Class[] parameterTypes, Object[] args)