JDKAndJRE

---

title: Java的JDK以及JRE date: 2018-11-21 10:56:52 tags: - JVM categories: - Java

目录 start

1. JDK And JRE
2. Oracle
   1. Oracle JDK
   2. Oracle JRE
3. OpenJDK

目录 end|2020-06-29 19:16|

---

JDK And JRE

但是11发布后, Oracle修改了使用协议, JDK商用需付费, 仅个人开发演示免费 License

Oracle

roadmap

Oracle JDK

以下是Java8的结构

    ├── bin/
    ├── COPYRIGHT
    ├── include/
    ├── javafx-src.zip
    ├── jre/
    ├── lib/
    ├── LICENSE
    ├── man/
    ├── README.html
    ├── release
    ├── src.zip
    ├── THIRDPARTYLICENSEREADME-JAVAFX.txt
    └── THIRDPARTYLICENSEREADME.txt

以下是Java11的目录结构

    ├── bin
    ├── conf
    ├── include
    ├── jmods
    ├── legal
    ├── lib
    ├── README.html
    └── release

• bin目录下常用工具 Useage: Java 性能分析:
  • java javac javap jar
  • jconsole jmap jmc jps jstack jstat jstatd jvisualvm

---

Oracle JRE

Java运行时环境

Java11 开始, JDK内去掉了JRE模块

---

OpenJDK

Official Site | OpenJDK Source | Github:source

Open JDK 11: Download