JVM有自己的内存结构，字节码执行引擎，因此class字节码才能在jvm上运行，除了Java以外，Scala，groovy等语言也可以编译成字节码而后在jvm中运行。

JVM介绍和源码 首先JVM是一个虚拟机，当你安装了jre，它就包含了jvm环境。 JVM有自己的内存结构，字节码执行引擎，因此class字节码才能在jvm上运行，除了Java以外，Scala，groovy等语言也可以编译成字节码而后在jvm中运行。 JVM是用c开发的。

The JRE creates the JVM and ensures dependencies are available to your Java programs. It plays a vital role in devops and cloud configurations.

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