#7213 added a small tool to print out ICU4C version information. For ICU4J, I propose:
Add "main" to com.ibm.icu.util.VersionInfo
It prints out followings
ICU major(API) version (e.g. "4.4")
ICU release number (e.g. "4.4.1")
ICU data version (e.g. "4.4")
Unicode data version (e.g. "5.2")
tzdata version (e.g. "2010f")
Specify com.ibm.icu.util.VersionInfo as Main-Class in MANIFEST.MF in ICU4J jar file
Sounds good to me.
Maybe also have it print out the url of the icu site and a one-line summary of license terms?
Milestone 4.5.1 deleted