Many developers want to customize Liferay Portal to fit it to a client's requirements. Also, in this book, there will be a number of examples of code, so the setting environment is an important step to start with. Liferay mentions that there are two types of development and two ways to get sources:
For the purpose of this book, it is enough to use the non-contributors version only.
The minimal requirements to use Liferay Portal are Java Development Kit (JDK), Apache Ant with 1.7 version or later, and Eclipse IDE Indigo or later. Make sure that the installation is successful by typing the following lines of code:
$ ant -version Apache ...