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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, class, class, commandline, defaultcompileradapter, error, javac13, modern_compiler_success, modern_compiler_success, object, object, reflection, string, using

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 java.lang.reflect.Method;

 * The implementation of the javac compiler for JDK 1.3
 * This is primarily a cut-and-paste from the original javac task before it
 * was refactored.
 * @since Ant 1.3
public class Javac13 extends DefaultCompilerAdapter {

     * Integer returned by the "Modern" jdk1.3 compiler to indicate success.
    private static final int MODERN_COMPILER_SUCCESS = 0;

     * Run the compilation.
     * @return true if the compiler ran with a zero exit result (ok)
     * @exception BuildException if the compilation has problems.
    public boolean execute() throws BuildException {
        attributes.log("Using modern compiler", Project.MSG_VERBOSE);
        Commandline cmd = setupModernJavacCommand();

        // Use reflection to be able to build on all JDKs >= 1.1:
        try {
            Class c = Class.forName ("");
            Object compiler = c.newInstance ();
            Method compile = c.getMethod ("compile",
                new Class [] {(new String [] {}).getClass ()});
            int result = ((Integer) compile.invoke
                          (compiler, new Object[] {cmd.getArguments()}))
                .intValue ();
            return (result == MODERN_COMPILER_SUCCESS);
        } catch (Exception ex) {
            if (ex instanceof BuildException) {
                throw (BuildException) ex;
            } else {
                throw new BuildException("Error starting modern compiler",
                                         ex, location);

Other Ant examples (source code examples)

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

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