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JAR Java ARchive file (a compressed file for applets and related files)

JAVA Java source code

JBF Paint Shop Pro image browser file

JFF JPEG bitmap

JMP SAS JMPDiscovery chart-to-statistics file

JN1 Epic MegaGames Jill of the Jungle data file

JPEG JPEG bitmap

JPG JPEG bitmap

JS JavaScript source code

JTF JPEG bitmap

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