6、 下图展示了JDK、JRE与JVM三者间的关联。 7、 JVM是Java虚拟机。 8、 JVM是Java虚拟机的简称，正是它让Java语言实现了一次编写，到处运行的理想。

2、 Java开发工具包，简称JDK，是Java开发的核心组件，内置JRE及多种实用工具，为Java程序的编写、调试和运行提供完整支持。

My ZDNet colleague Ed Bott has exposed some icky practices at Oracle regarding their monetization of the end-user JRE install. Here's a better Java option for you to check out and some ...

Oracle released a security update this week that addresses 17 critical Java vulnerabilities affecting the Java Development Kit (JDK) and the Java Runtime Environment (JRE).