<Tr> <Th_colspan="2"> Registers </Th> </Tr> <Tr> <Th> General purpose </Th> <Td> Per - method operand stack (up to 65535 operands) plus per - method local variables (up to 65535) </Td> </Tr> <P> A Java virtual machine (JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages and compiled to Java bytecode . The JVM is detailed by a specification that formally describes what is required of a JVM implementation . Having a specification ensures interoperability of Java programs across different implementations so that program authors using the Java Development Kit (JDK) need not worry about idiosyncrasies of the underlying hardware platform . </P> <P> The JVM reference implementation is developed by the OpenJDK project as open source code and includes a JIT compiler called HotSpot . The commercially supported Java releases available from Oracle Corporation are based on the OpenJDK runtime . </P>

What is jvm and how does it work
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