com.ibm.icu.util.StringTokenizer is used by com.ibm.icu.impl.ICUResourceBundle and com.ibm.icu.util.VTimeZone. They do not depend on ICU specific enhancement of StringTokenizer. Therefore, they can be replaced with JDK StringTokenizer. We should use JDK StringTokenizer because -
JDK version is lighter
Can avoid dragging unnecessary inter-component dependencies
Milestone 4.7.1 deleted