Running Ant buildfiles
  Any file with a .xml extension can be run as an Ant buildfile. Of course, not all such files really
  are Ant buildfiles, but no harm is done if an attempt is made to mistakenly run a non-Ant .xml file as
  an Ant buildfile.
  In this section, the basic mechanisms for running Ant buildfiles in Eclipse will be covered, using the
  HelloWorld.xml file created in the Editing Ant buildfiles task.
  
    - Select HelloWorld.xmlin one of the navigation views and choose Run As > Ant Build...
    from its context menu.
- The launch configuration dialog is opened on a launch configuration for this Ant buildfile.
       
 
- This dialog allows the configuration of many aspects of the way an Ant buildfile is run, but for now
    concentrate on the Targets tab which allows the selection of which Ant targets to run and their order.
    Select both targets and leave the order as the default.
- Click the Run button.
- The Ant buildfile is run, and the output is sent to the Console view.
Creating Ant buildfiles
  Editing Ant buildfiles
  Saving & Reusing Ant options
  Running Ant buildfiles
  Creating a project builder Ant buildfile
  Ant buildfiles as project builders
  Executing project builders
  External tools
  Non-Ant project builders
  Stand-alone external tools