linux下配置java环境

1.首先要去下载好JDK

Java SE 8的官方网址是http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.解压文件

[root@acb40835 software]# tar -xvf jdk-8u65-linux-x64.tar.gz

3.添加环境变量

[root@acb40835 software]# vim /etc/profile

添加：

export JAVA_HOME=/home/software/jdk1.8.0_65
export JRE_HOME=/home/software/jdk1.8.0_65/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

4.环境变量生效

[root@acb40835 software]# source /etc/profile

5.检查安装是否成功

[root@acb40835 software]# java -version

2021-04-11
2021-11-07
2021-11-06
2022-02-07
2022-02-22
2021-12-04
2022-01-15
2021-06-14