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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

buildexception, buildexception, dom, domelementwriter, domelementwriter, echoxml, error_no_xml, file, file, io, no, no, node, string, xml, xmlfragment

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.



import org.w3c.dom.Node;
import org.w3c.dom.Element;

 * Echo XML.
 * Known limitations:
 * <ol>
 * <li>Currently no XMLNS support
 * <li>Processing Instructions get ignored
 * <li>Encoding is always UTF-8
 * </ol>
 * @since Ant 1.7
public class EchoXML extends XMLFragment {

    private File file;
    private boolean append;
    private static final String ERROR_NO_XML = "No nested XML specified";

     * Set the output file.
     * @param f the output file.
    public void setFile(File f) {
        file = f;

     * Set whether to append the output file.
     * @param b boolean append flag.
    public void setAppend(boolean b) {
        append = b;

     * Execute the task.
    public void execute() {
        DOMElementWriter writer = new DOMElementWriter(!append);
        OutputStream os = null;
        try {
            if (file != null) {
                os = new FileOutputStream(file.getAbsolutePath(), append);
            } else {
                os = new LogOutputStream(this, Project.MSG_INFO);
            Node n = getFragment().getFirstChild();
            if (n == null) {
                throw new BuildException(ERROR_NO_XML);
            writer.write((Element) n, os);
        } catch (BuildException e) {
            throw e;
        } catch (Exception e) {
            throw new BuildException(e);
        } finally {


Other Ant examples (source code examples)

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

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