Apache Ant Tasks - Condition

Description

Condition task sets the property value to true by default if condition is true; otherwise, the property is not set. You can set the value to something other than the default by specifying the value attribute.

Properties

Sr.No	Attributes & Description
1	Property The name of the property to set. (Mandatory)
2	Value The value to set the property to.
3	Else The value to set the property to if the condition evaluates to false.

Sr.No

Attributes & Description

Property

The name of the property to set. (Mandatory)

Value

The value to set the property to.

Else

The value to set the property to if the condition evaluates to false.

Example

Usage

Create build.xml with the following content −

<?xml version="1.0"?>
<project name="TutorialPoint" default="info">
   <condition property="isWindows">
      <os family="windows"/>
   </condition>
   <target name="info">
      <echo message="${isWindows}"></echo>
   </target>
</project>

Above script will set a variable is Windows based on the underlying operation system is windows or not.

Output

Running Ant on the above build file produces the following output −

F:\tutorialspoint\ant>ant
Buildfile: F:\tutorialspoint\ant\build.xml

info:
   [echo] true

BUILD SUCCESSFUL
Total time: 0 seconds