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Ant example source code file (

This example Ant source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Ant tags/keywords

filenamefilter, filenamefilter, innerclassfilenamefilter, innerclassfilenamefilter, io, string, string

The source code

 *  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
 *  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.


 * A filename filter for inner class files of a particular class.
public class InnerClassFilenameFilter implements FilenameFilter {
    private String baseClassName;

     * Constructor of filter.
     * @param baseclass the class to filter inner classes on.
    InnerClassFilenameFilter(String baseclass) {
        int extidx = baseclass.lastIndexOf(".class");
        if (extidx == -1) {
            extidx = baseclass.length() - 1;
        baseClassName = baseclass.substring(0, extidx);

     * Check if the file name passes the filter.
     * @param dir not used.
     * @param filename the filename to filter on.
     * @return true if the filename is an inner class of the base class.
    public boolean accept(File dir, String filename) {
        if ((filename.lastIndexOf(".") != filename.lastIndexOf(".class"))
            || (filename.indexOf(baseClassName + "$") != 0)) {
            return false;
        return true;

Other Ant examples (source code examples)

Here is a short list of links related to this Ant source code file:

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