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Uses the privilizer example to test the antlib

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/*
 * 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.
 */
package org.apache.commons.weaver.privilizer.example;

public final class Utils {
    public static final class More {
        private More() {
        }

        public static String getProperty() {
            return Utils.getProperty("bar");
        }

        public static String getTopStackElementClassName() {
            return Thread.currentThread().getStackTrace()[1].getClassName();
        }
    }

    private Utils() {
    }

    public static final String FOO = "foo".intern();

    public static String readPublicConstant() {
        return FOO;
    }

    public static String getProperty() {
        return getProperty("foo");
    }

    public static String getProperty(int i, String key) {
        if (i <= 0) {
            return getProperty(key);
        }
        int counter = i;
        return getProperty(--counter, key);
    }

    public static String getProperty(String key) {
        return System.getProperty(key);
    }

    private static Integer n;
    static {
        n = Integer.valueOf(999);
    }

    public static int readPrivateField() {
        return n;
    }
}