src/java.base/share/classes/com/sun/java/util/jar/pack/intrinsic.properties

*** 16,26 ****
  
  # Module attributes, supported by the tool and not JSR-200
  pack.class.attribute.Module = NH[RUHFH]NH[RUHNH[RUH]]NH[RCH]NH[RCHRCH]
  pack.class.attribute.ConcealedPackages = NH[RUH]
  pack.class.attribute.Version = RUH
! pack.class.attribute.MainClass = RUH
  pack.class.attribute.TargetPlatform = RUHRUHRUH
  pack.class.attribute.Hashes = RUHNH[RUHRUH]
  
  
  # Note:  Zero-length ("marker") attributes do not need to be specified here.
--- 16,26 ----
  
  # Module attributes, supported by the tool and not JSR-200
  pack.class.attribute.Module = NH[RUHFH]NH[RUHNH[RUH]]NH[RCH]NH[RCHRCH]
  pack.class.attribute.ConcealedPackages = NH[RUH]
  pack.class.attribute.Version = RUH
! pack.class.attribute.MainClass = RCH
  pack.class.attribute.TargetPlatform = RUHRUHRUH
  pack.class.attribute.Hashes = RUHNH[RUHRUH]
  
  
  # Note:  Zero-length ("marker") attributes do not need to be specified here.