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Clojure High Performance Programming - Second Edition by Shantanu Kumar

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The Java Virtual Machine

The Java Virtual Machine is a bytecode-oriented, garbage-collected virtual machine that specifies its own instruction set. The instructions have equivalent bytecodes that are interpreted and compiled to the underlying OS and hardware by the Java Runtime Environment (JRE). Objects are referred to using symbolic references. The data types in the JVM are fully standardized as a single spec across all JVM implementations on all platforms and architectures. The JVM also follows the network byte order, which means communication between Java programs on different architectures can happen using the big-endian byte order. Jvmtop (https://code.google.com/p/jvmtop/) is a handy JVM monitoring tool similar to the top command in

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