Install ant build.xml

The name attribute is required and specifies the name of the target in this case: "hello". Task echo in this case :- Tasks are the smallest units of work in ant.

Tasks may operate on many files, but the same operation will be applied to each file. The echo task's message attribute specifies the text that is generated by this task.. For my install I used the following values. This example will show you how to use Ant to compile and run a Java program,by using ant. Follow the steps mentioned below for this sample example. Create a directory and name it to antfirstexample in any of your local drive.

Everything will go inside this directory like: source files, created output files, and the build file. By convention, all Ant build files should be called build. If you're not familiar with XML syntax, I recommend you read up a little on it first, so you know what elements, attributes, tags, closing tags, and comments look like.

It's very similar to HTML syntax. But more formal You know XML? Let's break this down line-by-line:. The graphical view of the XML Tree of the build file is given below. The graphical view of the XML tree makes it easier to look at a build file, and so the structure of the build file should become more clear.

Active Oldest Votes. There was the problem in java classpath. Fixing that solved the issue. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Helping communities build their own LTE networks.

Podcast Making Agile work for data science. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. One other trouble spot with proxies is with authenticating proxies. Ant cannot go beyond what the JVM does here, and as it is very hard to remotely diagnose, test and fix proxy-related problems, users who work behind a secure proxy will have to spend much time configuring the JVM properties until they are happy.

Note : Since Ant 1. The easiest, and best way is to get these external libraries from JPackage if JPackage has them available.

Note: for each such library, you will have to get both the external package itself e. However, JPackage does not package proprietary software, and since some of the optional packages depend on proprietary JARs, they must be handled as follows. This may violate the spirit of JPackage, but it is necessary if you need these proprietary packages.

For example, suppose you want to install support for NetRexx, which JPackage does not support:. To build Ant from source, you can either install the Ant source distribution or clone the Ant repository from Git. See Source Distribution for details. See Installing Ant for examples on how to do this for your operating system. It does not work with gcj or kjc. Make sure you have downloaded any auxiliary JARs required to build tasks you are interested in.

Note that this will make the auxiliary JAR available for the building of Ant only. You can also get most of the auxiliary JAR files i. See Optional Tasks for instructions on how to do this. The fetch. On most occasions you will not need to explicitly bootstrap Ant since the build scripts do that for you. However, if the build file you are using makes use of features not yet compiled into the bootstrapped Ant, you will need to manually bootstrap.

Run bootstrap. Ant's build script will try to set executable flags for its shell scripts on Unix -like systems. There are various reasons why the chmod task might fail like when you are running the build script as a different user than the one who installed Ant initially.

In this case you can set the Ant property chmod. The following libraries are needed in Ant's classpath if you are using the indicated feature. Note that only one of the regexp libraries is needed for use with the mappers and Java includes a regexp implementation which Ant will find automatically. You will also need to install the particular Ant optional JAR containing the task definitions to make these tasks available.

Ant has a built in diagnostics feature. If you run ant -diagnostics , Ant will look at its internal state and print it out. This code will check and print the following things. Running ant -diagnostics is a good way to check that Ant is installed. It is also a first step towards self-diagnosis of any problem. Any configuration problem reported to the user mailing list will probably result ins someone asking you to run the command and show the results, so save time by using it yourself.

For diagnostics from within IDE, use the diagnostics task to run the same tests as an Ant option. This can be added to a diagnostics target in a build file to see what tasks are available under the IDE, what the XML parser and classpath is, etc. If you cannot get Ant installed or working, the Ant user mailing list is the best place to start with any problem.

Why the user list, and not the developer list? Because there are more users than developers, so more people who can help you. Release notes of the given version in HTML format. When upgrading your Ant installation you should have a look at the Changes that could break older environments section. ZIP archive containing the compiled version of Ant in the last released version. It is recommended that you do not download the latest version this way, as the standard way of downloading described above will redirect you to a mirror closer to you, thus making the download faster for you and reducing the load on Apache servers.

ZIP archive containing the sources of Ant. If you have this you can compile Ant. If you do not have the required dependencies, the classes depending on them are just not built. Again, it is preferred to use the standard way of getting the source package described above to make your download quicker and to reduce the load on Apache servers.

Security file for checking the correctness of the zip file. This one is the PGP signature. This one is the MD5 checksum. This one is the SHA1 checksum.