It is a fuctorial calculator.

factorial\build.xml
.........\build
.........\.....\classes
.........\.....\.......\factorial
.........\.....\.......\.........\Factorial.class
.........\manifest.mf
.........\nbproject
.........\.........\build-impl.xml
.........\.........\genfiles.properties
.........\.........\private
.........\.........\.......\private.properties
.........\.........\project.properties
.........\.........\project.xml
.........\src
.........\...\factorial
.........\...\.........\Factorial.java

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