Jvm and jvm virtual machines

Jvm and jvm virtual machines

What is the relationship between jvm and jre?

JRE: Java Runtime Environment,Includes Java virtual machines(Jvm)Java core class library and supporting files. It does not containIn JDKDevelopment tools, such as Compilers, Debugger, and other tools. So the relationship is clear at a glance.

JVM includes:
Two subsystems:

Class loader

Execution engine

Class Loader category: startup, other (extensions, applications, custom)

 

Two components:

Runtime data area

Native interface local method

What is the JVM principle?

To put it simply, you can think of JVM as a complete custom command system, which completes the coding and interpretation of commands, if you want to understand it thoroughly, I recommend you read the JVM source code or read some books on the implementation principles of virtual machines.
 
What is the JVM principle?

To put it simply, you can think of JVM as a complete custom command system, which completes the coding and interpretation of commands, if you want to understand it thoroughly, I recommend you read the JVM source code or read some books on the implementation principles of virtual machines.