What is the relationship between jdk and java

What is jdk?

jdk is a package (zip) of the Java basic environment and the corresponding development platform standards and toolkits.

Development platform:

j2se, j2ee, j2me

Environment:

Virtual machine, running Environment

The relationship between jdk and java

JDK is the core of the entire JAVA, including the Java Runtime Environment JRE (Java Runtime Envirnment), a bunch of Java tools (javac/ java/jdb, etc.) and Java-based class libraries (i.e. Java API including rt.jar).

1. SE (J2SE), standard edition, is the version we usually use. Starting from JDK 5.0, it was renamed Java SE.

2. EE (J2EE), enterprise edition, enterprise edition, use this JDK to develop J2EE applications. Starting from JDK 5.0, it was renamed Java EE.

3. ME (J2ME), micro edition, is mainly used for java applications on mobile devices and embedded devices. Starting from JDK 5.0, it was renamed Java ME.

Recommended tutorial: Java tutorial

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