get Accessible Constructor - Java Reflection

Java examples for Reflection:Constructor

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Description

get Accessible Constructor

Demo Code

/*//  ww  w.  j  av  a2  s. c  o  m
 **        DroidPlugin Project
 **
 ** Copyright(c) 2015 Andy Zhang <zhangyong232@gmail.com>
 **
 ** This file is part of DroidPlugin.
 **
 ** DroidPlugin is free software: you can redistribute it and/or
 ** modify it under the terms of the GNU Lesser General Public
 ** License as published by the Free Software Foundation, either
 ** version 3 of the License, or (at your option) any later version.
 **
 ** DroidPlugin is distributed in the hope that it will be useful,
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 ** Lesser General Public License for more details.
 **
 ** You should have received a copy of the GNU Lesser General Public
 ** License along with DroidPlugin.  If not, see <http://www.gnu.org/licenses/lgpl.txt>
 **
 **/
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;

public class Main{
    private static <T> Constructor<T> getAccessibleConstructor(
            final Constructor<T> ctor) {
        Validate.isTrue(ctor != null, "constructor cannot be null");
        return isAccessible(ctor)
                && isAccessible(ctor.getDeclaringClass()) ? ctor : null;
    }
    private static boolean isAccessible(final Class<?> type) {
        Class<?> cls = type;
        while (cls != null) {
            if (!Modifier.isPublic(cls.getModifiers())) {
                return false;
            }
            cls = cls.getEnclosingClass();
        }
        return true;
    }
}

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