Retrieve value from text file and replace a string constant in another file with that value using ant script

Question

I have a file called versionInfo.txt. This file among other things has the following text: \"Implementation-Version: 7.5.0.1\".

I need to retrieve the version value

Answer 1

Create a properties file like this and name it build.properties

version.label=7.5.0.1

Then in your build.xml file

So your file structure should look like

myproject
    build.properties
    build.xml
    myClass.java

Then you can execute your ANT build by changing to the "myproject" directory and executing

ant replace-labels

The replace tag will look for the string "@version-info@" in your myClass.java file and replace it with the value "7.5.0.1"