Java Key Public getPublicDeclaredMethods(Class clz)

Description

Get the methods declared as public within the class

License

Open Source License

Parameter

Parameter	Description
clz	class to find public methods

Declaration

public static synchronized Method[] getPublicDeclaredMethods(Class clz) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2011 MadRobot./*ww w  . j  a v  a2 s  . c om*/
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *  Elton Kent - initial API and implementation
 ******************************************************************************/

import java.lang.ref.Reference;
import java.lang.ref.SoftReference;

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;

public class Main {
    private static Map declaredMethodCache = Collections.synchronizedMap(new WeakHashMap());

    /**
     * Get the methods declared as public within the class
     * 
     * @param clz
     *            class to find public methods
     * @return
     */
    public static synchronized Method[] getPublicDeclaredMethods(Class clz) {
        // Looking up Class.getDeclaredMethods is relatively expensive,
        // so we cache the results.
        Method[] result = null;
        // if(!ReflectUtil.isPackageAccessible(clz)){
        // return new Method[0];
        // }
        final Class fclz = clz;
        Reference ref = (Reference) declaredMethodCache.get(fclz);
        if (ref != null) {
            result = (Method[]) ref.get();
            if (result != null) {
                return result;
            }
        }

        // We have to raise privilege for getDeclaredMethods
        result = (Method[]) AccessController.doPrivileged(new PrivilegedAction() {

            public Object run() {
                return fclz.getDeclaredMethods();
            }
        });

        // Null out any non-public methods.
        for (int i = 0; i < result.length; i++) {
            Method method = result[i];
            int mods = method.getModifiers();
            if (!Modifier.isPublic(mods)) {
                result[i] = null;
            }
        }
        // Add it to the cache.
        declaredMethodCache.put(fclz, new SoftReference(result));
        return result;
    }
}

Related

1. getPublic(byte[] encodedKey)
2. getPublic(byte[] keyBytes)
3. getPublicBytes(KeyPair keyPair)
4. getPublicDeclaredMethods(Class clz)
5. getPublicEncoded(KeyPair kp)
6. getPublicExponent(PublicKey pubk)
7. getPublicKey()