icedtea-7-jre-jamvm 7u7-2.3.2a-1ubuntu1 (amd64 binary) in ubuntu quantal

 The package provides an alternative runtime using the JamVM. This is a
 somewhat faster alternative than the Zero port on architectures like armel,
 mips, mipsel, powerpc.
 .
 The VM is started with the option `-jamvm'. See the README.Debian for details.