The PACK file format was created to be used with PACK200, a program that was included with the Java 1.5.0 program. It compressed JAR files by up to sixty percent.
This program is used by Java Web Start to unpack JAR files for use with Java programs.
.pack File
Extension
Developer:
Oracle
File category:
What are pack files & how to open them - Pack200 Packed Jar File
File category:
Developer:
Oracle