The best replacement for classpath is path.

The best alternatives to classpath are rated as following:
★★★★★  path
★★★★  build path
★★★★  classpath*
★★★  classpath
★★  manifest
★★  ld_library_path
★★  java_home
★  cp
★  path windows
  library path

Your alternative for classpath is not listed? Suggest!
Speaking about classpath, one probably shouldn't forget about javac.

Other search terms related to classpath and their ratings are:
★★★★★ javac
★ java command
You have in mind a companion for classpath and it is not yet here? Propose!



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classpath
path
build path