Ubuntu-配置JDK

1.先在oracle官网下载JDK for Linux 64

2.将下载的压缩包解压

3.配置环境变量

 打开profile文件

 

  #sudo gedit /etc/profile

  配置环境变量

 

export JAVA_HOME=/home/renke/Software/jdk1.8.0_25
export PATH=$JAVA_HOME/bin:$PATH
export JRE_HOME=$JAVA_HOME/jre
export classPath=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

4.重启系统后

java -version

java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)