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I read the following words but I like to know differences among them... JVM Spec, JVM Implementation, JVM Runtime
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Java Virtual Machine (JVM) is a specification that provides runtime environment in which java bytecode can be executed. As the name implies, the JVM acts as a “virtual” machine or processor. Java's platform independence consists mostly of its Java Virtual Machine (JVM) .
The JVM has two primary functions: to allow Java programs to run on any device or operating system (known as the "Write once, run anywhere" principle), and to manage and optimize program memory.
Java Virtual Machine, or JVM, loads, verifies and executes Java bytecode. It is known as the interpreter or the core of Java programming language because it executes Java programming.
JVM Spec: document describing how the JVM should behave.
JVM Implementation: an implementation of a JVM based on the JVM Spec.
JVM Runtime: an instance of a JVM implementation.
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