JDK是 Java 语言的软件开发工具包，主要用于移动设备、嵌入式设备上的java应用程序。JDK是整个java开发的核心，它包含了JAVA的运行环境（JVM+Java系统类库）和JAVA工具。

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Java SE Development Kit 8u361 Java SE subscribers will receive JDK 8 updates until at least December 2030. The Oracle JDK 8 license changed in April 2019 The Oracle Technology Network License Agreement for Oracle Java SE is substantially different from prior Oracle JDK 8 licenses. This license permits certain uses, such as personal use and development use, at no cost -- but other uses authorized under prior Oracle JDK licenses may no long

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