FinderUtils.java

/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.beans.finder;

/**
 * Defines utility methods for use by finders.
 */

final class FinderUtils {
    private FinderUtils() { }

    /**
     * Returns true if the given class is an exported package.
     */
    public static boolean isExported(Class<?> c) {
        String pn = packageName(c);
        return c.getModule().isExported(pn);
    }

    private static String packageName(Class<?> c) {
        if (c.isArray()) {
            return packageName(c.getComponentType());
        } else {
            String name = c.getName();
            int dot = name.lastIndexOf('.');
            if (dot == -1) return "";
            return name.substring(0, dot);
        }
    }
}