Java ClassLoader Load getProhibitedProxyInterfaces()

Description

Returns collection of prohibited proxy interfaces read from resources.

License

Apache License

Declaration

private static Collection getProhibitedProxyInterfaces() 

Method Source Code

//package com.java2s;
/*//from  w w  w  . j  a  va  2  s  .c o  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.io.BufferedReader;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import java.net.URL;

import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;

public class Main {
    /** name of the resource containing prohibited proxy interfaces */
    private static final String prohibitedProxyInterfacesResource = "com/sun/jini/proxy/resources/"
            + "InvocationHandler.moreProhibitedProxyInterfaces";

    /**
     * Returns collection of prohibited proxy interfaces read from resources.
     */
    private static Collection getProhibitedProxyInterfaces() {
        Collection names = new HashSet();
        names.add("javax.management.MBeanServerConnection");
        Enumeration resources;
        try {
            resources = ClassLoader.getSystemResources(prohibitedProxyInterfacesResource);
        } catch (IOException e) {
            throw new ExceptionInInitializerError(
                    new IOException("problem getting resources: " + prohibitedProxyInterfacesResource)
                            .initCause(e));
        }
        while (resources.hasMoreElements()) {
            URL url = (URL) resources.nextElement();
            try {
                InputStream in = url.openStream();
                try {
                    BufferedReader r = new BufferedReader(new InputStreamReader(in, "utf-8"));
                    while (true) {
                        String s = r.readLine();
                        if (s == null) {
                            break;
                        }
                        int i = s.indexOf('#');
                        if (i >= 0) {
                            s = s.substring(0, i);
                        }
                        s = s.trim();
                        int n = s.length();
                        if (n == 0) {
                            continue;
                        }
                        char prev = '.';
                        for (i = 0; i < n; i++) {
                            char c = s.charAt(i);
                            if (prev == '.' ? !Character.isJavaIdentifierStart(c)
                                    : !(Character.isJavaIdentifierPart(c) || (c == '.' && i < n - 1))) {
                                throw new ExceptionInInitializerError(
                                        "illegal interface name in " + url + ": " + s);
                            }
                            prev = c;
                        }
                        names.add(s);
                    }
                } finally {
                    try {
                        in.close();
                    } catch (IOException e) {
                    }
                }
            } catch (IOException e) {
                throw new ExceptionInInitializerError(new IOException("problem reading " + url).initCause(e));
            }
        }
        return names;
    }
}

Related

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2. getManifestInfo()
3. getMetadataSpecialSymbolsXml()
4. getPath(final String fileName)
5. getPath(String resoureLocation)
6. getProperties(String bundleName, String fileName)
7. getProperty(String propertyName)
8. getReader(final String name, final String encoding)
9. getRootPath()