Fedora安装JDK

• 1. 下载JDK压缩包，放到文件夹下
• 2. 解压

root# tar -xzf jdk-8u191-linux-x64.tar.gz

• 3. 设置环境变量，并更新环境变量

root# vi etc/profile

# JAVA-Environment
JAVA_HOME=/opt/jdk1.8.0_191
JRE_HOME=/opt/jdk1.8.0_191/jre
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME JRE_HOME CLASS_PATH PATH

root# source etc/profile

• 4. 测试

root# java -version

java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)

root# javac -version

javac 1.8.0_191