CentOS 安装最新版本JDK14

1。 下载 https://www.oracle.com/java/technologies/javase-jdk14-downloads.html

这里选择linux x64 tar.gz包，下载解压缩后即可使用。点击右边下载链接，会提示同意协议，和登录平台。

2。 上传到linux服务器，解压缩

tar -zxvf jdk-14.0.1_linux-x64_bin.tar.gz

移动到/usr/local/java 并重命名

mv jdk-14.0.1 /usr/local/java

3。 配置环境变量/etc/profile 放到末尾

export JAVA_HOME=/usr/local/java/
export PATH=$PATH:$JAVA_HOME/bin

4。 执行source /etc/profile 使生效

5. 验证

[root@VM_0_3_centos java]# javac
Usage: javac <options> <source files>
where possible options include:
  @<filename>                  Read options and filenames from file
  -Akey[=value]                Options to pass to annotation processors
  --add-modules <module>(,<module>)*
        Root modules to resolve in addition to the initial modules, or all modules
        on the module path if <module> is ALL-MODULE-PATH.
  --boot-class-path <path>, -bootclasspath <path>
        Override location of bootstrap class files
  --class-path <path>, -classpath <path>, -cp <path>
        Specify where to find user class files and annotation processors
  -d <directory>               Specify where to place generated class files
  -deprecation

[root@VM_0_3_centos java]# java -version
java version "14.0.1" 2020-04-14
Java(TM) SE Runtime Environment (build 14.0.1+7)
Java HotSpot(TM) 64-Bit Server VM (build 14.0.1+7, mixed mode, sharing)

以上说明成功安装