linuxmint安装java_centos7安装java

首先去官方站点下载java源码包

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

解压

tar -zxf jdk-8u181-linux-x64.tar.gz

设置环境变量

[root&＃64;java jdk1.8]# vim /etc/profile

JAVA_HOME&＃61;/usr/local/java/jdk1.8

JRE_HOME&＃61;$JAVA_HOME/jre

PATH&＃61;$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

CLASSPATH&＃61;.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib

export JAVA_HOME JRE_HOME PATH CLASSPATH

使环境变量生效

[root&＃64;java jdk1.8]# source /etc/profile

检查java版本

[root&＃64;java jdk1.8]# java -version

java version "1.8.0_181"

Java(TM) SE Runtime Environment (build 1.8.0_181-b13)

Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)