JDK: Java Development Kit (java development kit, provided to java developers, including development tools (compiler tool javac.exe and packaging tool jar.exe, etc.) + JRE)
JRE: Java Runtime Environment (the core class library required by the java virtual machine (JVM) + java program)
Eclipse sum myeclipse:
JavaSE、JavaEE、JavaME：
Java SE-Standard Edition (Basic in Basics): Desktop Development; Java EE: Enterprise Edition: Web Development; Java ME: Micro Edition: Mobile Development