Reading from properties file using Ant

Here is an example ant target which explains how to read from a properties file in ant.
//Build.xml

1. <project name="Sample" default="delete-dir" basedir=".">
3.     <!-- Read the properties file -->
4.     <property file="config/config.properties" prefix="config"/>
5.        
6.     <!-- Using the property value(read from file) in ant's preperty attribute-->
7.     <property name="build.loc" value="${config.build_dir_loc}" />
8.    
9.     <!-- Delete directories that are not needed -->
10.     <target name="delete-dir" >
11.         <delete dir="${build.loc}"/>
12.         <echo> /* Directory deleted successfully ! */ </echo>
13.     </target>
14. </project>

In the above ant script the file from which we read data is 'config.properties' (present inside 'config' folder)which is shown below:
//config.properties

1. username = aksahu
2. password = aksahu123
3. url = http://quickprotech.blogspot.in/
4. port = 4444
5. build_dir_loc = E:/temp/build