The Java Kernel VM is coming in Update 4 for JDK 6

Java Kernel is a minimal version of the JRE that can download the parts of Java an application needs at runtime. The cut-down JRE, originally rumored to be around 3 MB, will probably arrive with JDK 6 as part of update package number 4.

The news hasn’t been confirmed yet, but the evidence available suggests that this version of the VM is ready to ship. See the source:
Java Kernel is Ready. Will Ship in Update 4

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