Gets a method and forces it to be accessible, even if it is not. - Java Reflection

Java examples for Reflection:Method

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Description

Gets a method and forces it to be accessible, even if it is not.

Demo Code

/*/* w w w.  j av  a  2 s . c om*/
 * $Id: ClassUtil.java 709153 2008-10-30 12:54:10Z apetrelli $
 *
 * 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.InvocationTargetException;
import java.lang.reflect.Method;

public class Main{

    /**
     * Gets a method and forces it to be accessible, even if it is not.
     *
     * @param clazz The class from which the method will be got.
     * @param methodName The name of the method.
     * @param parameterTypes The parameter types that the method must match.
     * @return The method, if it is found.
     * @since 2.0.7
     */
    public static Method getForcedAccessibleMethod(Class<?> clazz,
            String methodName, Class<?>... parameterTypes) {
        Method method;
        try {
            method = clazz.getMethod(methodName, parameterTypes);
        } catch (SecurityException e) {
            throw new CannotAccessMethodException("Cannot access method '"
                    + methodName + "' in class '" + clazz.getName()
                    + "' for security reasons", e);
        } catch (NoSuchMethodException e) {
            throw new CannotAccessMethodException("The method '"
                    + methodName + "' in class '" + clazz.getName()
                    + "' does not exist", e);
        }
        if (!method.isAccessible()) {
            method.setAccessible(true);
        }
        return method;
    }
}

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