Tag Archives: JRE

Difference between JDK, JVM, JRE, OpenJDK and JIT

If you are a Java developer and you are going to achieve success in Java, it is very important to have clear understanding and know difference between main Java components . This knowledge will give you overall picture of what Java is, how it works and definitely will help you in developing applications.

Firstly, I would like to show you all main components in one diagram. On the diagram below you will find information on how the components related to each other and which components are parts of other components.

java_hier_1

For instance, you can see that Java Development Kit JDK includes all components . The Java Virtual Machine JVM includes Just-In-Time compiler JIT and core libraries. In fact, you can install only JRE without development tools, but in this case you will not be able to compile Java code to byte code. Continue reading Difference between JDK, JVM, JRE, OpenJDK and JIT