Java Reflection Method Parameter getMethod(Class aClass, String methodName, Class[] parameterTypesToCheck, Class stopClass)

Description

get Method

License

Open Source License

Declaration

public static Method getMethod(Class aClass, String methodName, Class[] parameterTypesToCheck,
            Class stopClass) 

Method Source Code

//package com.java2s;
/* Copyright (C) 2000-2003 The Software Conservancy as Trustee.
 * All rights reserved./*from  w  w  w .  j  a  va2s  .c  o m*/
 *
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 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 * Nothing in this notice shall be deemed to grant any rights to trademarks,
 * copyrights, patents, trade secrets or any other intellectual property of the
 * licensor or any contributor except as expressly stated herein. No patent
 * license is granted separate from the Software, for code that you delete from
 * the Software, or for combinations of the Software with other software or
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 */

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class Main {
    public static Method getMethod(Class aClass, String methodName, Class[] parameterTypesToCheck,
            Class stopClass) {
        while (aClass != null && aClass != stopClass) {
            Method[] methods = aClass.getDeclaredMethods();
            for (int i = 0; i < methods.length; i++) {
                Method method = methods[i];
                if (method.getName().equals(methodName) && !Modifier.isAbstract(method.getModifiers())) {
                    Class[] parameterTypes = method.getParameterTypes();

                    if (parameterTypes.length == 0 && parameterTypesToCheck == null) {
                        return method;
                    }

                    if (parameterTypesToCheck != null && parameterTypes.length == parameterTypesToCheck.length) {
                        boolean allParametersOfSameType = true;
                        for (int j = 0; j < parameterTypesToCheck.length && allParametersOfSameType; j++) {
                            Class parameterTypeToCheck = parameterTypesToCheck[j];
                            if (!parameterTypes[j].equals(parameterTypeToCheck))
                                allParametersOfSameType = false;
                        }
                        if (allParametersOfSameType)
                            return method;
                    }
                }
            }
            aClass = aClass.getSuperclass();
        }
        return null;
    }
}

Related

1. getMethod(Class aClass, String name, Class... parameters)
2. getMethod(Class cl, String methodName, String obfName, Class... parameterTypes)
3. getMethod(Class clazz, String methodName, Class... parameterTypes)
4. getMethod(Class clazz, String methodName, Class... parameterTypes)