JamVM is an open source Java Virtual Machine (JVM) developed to be extremely small compared with other virtual machines (VMs) while conforming to the Java virtual machine specification version 2 (blue book).
JamVM can be configured to use the GNU Classpath or the OpenJDK Java class library and recent versions support object finalization, Soft/Weak/Phantom References, the Java Native Interface (JNI) and the Reflection API. The compacting garbage collector can run either synchronously or asynchronously within its own thread.
JamVM currently supports the CPUs: AMD64, ARM, i80486, MIPS, PowerPC and SPARC.
The OpenJDK compatible version of JamVM is supported by IcedTea, and IcedTea packages of JamVM are included in both Debian and Ubuntu. This enables JamVM to be installed as an alternative Java Virtual Machine to hotspot when using OpenJDK. When using Ubuntu on ARM, JamVM is the default VM (https://launchpad.net/ubuntu/oneiric/+source/openjdk-6/6b23~pre4-0ubuntu1).
Famous quotes containing the word jam:
“We fight our way through the massed and leveled collective safe taste of the Top 40, just looking for a little something we can call our own. But when we find it and jam the radio to hear it again it isn’t just ours—it is a link to thousands of others who are sharing it with us. As a matter of a single song this might mean very little; as culture, as a way of life, you can’t beat it.”
—Greil Marcus (b. 1945)