example_build_invalidate.xml

<?xml version="1.0" encoding="utf-8"?>
<project name="MyTask" basedir="." default="delete-pathsString">

    <property name="test.aws.access_key" value="your-value-here" />
    <property name="test.aws.secret_key" value="your-value-here" />
    <property name="test.aws.bucket" value="your-value-here" />
    <property name="test.aws.distributionId" value="your-value-here" />
    <property name="test.aws.jar" value="your-value-here" />

    <taskdef name="cloudfront" classpath="${test.aws.jar}" classname="it.corley.ant.CloudFront" />

    <!-- you can pass a paths string -->
    <target name="delete-pathsString" description="Use the Task">
        <cloudfront key="${test.aws.access_key}" secret="${test.aws.secret_key}" distributionId="${test.aws.distributionId}"
                    pathsString="www/css/home.css,www/css/main.css">
        </cloudfront>
    </target>

    <!-- or you pass a declarative paths through delete tags -->
    <target name="delete-declarative" description="Use the Task">
        <echo>Invalidation of cloudfront: file: ${test.aws.somefile}</echo>
        <cloudfront key="${test.aws.access_key}" secret="${test.aws.secret_key}" distributionId="${test.aws.distributionId}">
            <delete path="www/css/home.css"/>
            <delete path="www/css/main.css"/>
        </cloudfront>
    </target>

</project>