JDK is a Java language software development toolkit, mainly used for java applications on mobile devices and embedded devices. JDK is the core of the entire Java development. It includes the JAVA running environment (JVM Java system class library) and JAVA tools.
In short, JDK is a development toolbox provided to developers and is used by program developers. In addition to the complete JRE (Java Runtime Environment), it also includes other toolkits for developers.
JDK (Java Development Kit) is a software development kit (SDK) for the Java language.
SE (JavaSE), standard edition, standard edition, is the version we usually use. Starting from JDK 5.0, it was renamed Java SE.
EE (JavaEE), enterprise edition, enterprise edition, use this JDK to develop J2EE applications. Starting from JDK 5.0, it was renamed Java EE. Starting from February 26, 2018, J2EE was renamed Jakarta EE [1-2].
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.
Without JDK, Java programs (referring to java source code .java files) cannot be compiled. If you want to only run Java programs (referring to class or jar or other archive files), make sure that the corresponding JRE is installed.
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