Automatically incrementing a build number in a Java project

Question

I\'m using a versioning system that is represented by a.b.build where a is the overall version (will be 0 for prototype, alpha and beta versions, 1 for major release), b is

Answer 1

You can do it with without pom modification with the help of maven plugins and scripting.

For example to increment automatically the second digit of a version that doesn't have snapshot as prefix like in your case, on a linux system you can do :

#get the current pom version and store it into a variable
version=$(mvn -q -U -Dexpression=project.version -DforceStdout maven-help-plugin:evaluate)
#increment the second digit of the version and overwrite the variable
version=$(echo ${version} |  awk -F'.' '{print $1"."$2+1"."$3}' |  sed s/[.]$//)
#update the pom with the new version
mvn -U versions:set -DnewVersion=${version}

It works for versions with 3 digits but also 2 digits thanks to the sed.
Of course move the default increment part : "+1" on the digit that suits to your requirements :

# increment the first digit
awk -F'.' '{print $1+1"."$2"."$3}'

# increment the second digit
awk -F'.' '{print $1"."$2+1"."$3}'

# increment the last digit
awk -F'.' '{print $1"."$2"."$3+1}'