[root@localhost ~]# mkdir opt/jdk -p
(jdk可以自己从官网下载
)
输入ls检查jdk是否上传成功
[root@localhost jdk]# ls
jdk-8u181-linux-x64.tar.gz
[root@localhost jdk]# tag -zxvf //解压
..........
[root@localhost jdk]# ls
jdk1.8.0_181 jdk-8u181-linux-x64.tar.gz
此处可以看到jdk1.8.0_181这个解压好的文件夹
在jdk的基础上创建目录/usr/local/java,并且将解压的jdk文件移进去
cd cd /usr/local/java/jdk1.8.0_181/bin内,已经可以使用jdk,但还需要配置环境变量
[root@localhost jdk]# mkdir /usr/local/java
[root@localhost jdk]# mv jdk1.8.0_181/ /usr/local/java
[root@localhost jdk]# ll
总用量 181296
-rw-r--r--. 1 root root 185646832 8月 4 11:01 jdk-8u181-linux-x64.tar.gz
[root@localhost jdk]# cd /usr/local/java
[root@localhost java]# cd jdk1.8.0_181
[root@localhost jdk1.8.0_181]# ls
bin javafx-src.zip LICENSE release THIRDPARTYLICENSEREADME.txt
COPYRIGHT jre man src.zip
include lib README.html THIRDPARTYLICENSEREADME-JAVAFX.txt
[root@localhost jdk1.8.0_181]# cd bin
[root@localhost bin]# ls
appletviewer java javapackager jdb jmc jstat pack200 serialver xjc
ControlPanel javac java-rmi.cgi jdeps jmc.ini jstatd policytool servertool
extcheck javadoc javaws jhat jps jvisualvm rmic tnameserv
idlj javafxpackager jcmd jinfo jrunscript keytool rmid unpack200
jar javah jconsole jjs jsadebugd native2ascii rmiregistry wsgen
jarsigner javap jcontrol jmap jstack orbd schemagen wsimport
[root@localhost bin]# ./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)
首先cd /home中,并修改/etc/profile文件
修改完保存退出,并刷新环境变量才能使用
[root@localhost /]# cd home
[root@localhost home]# vi /etc/profile
注意:在文件内添加
export JAVA_HOME=/usr/local/java/ jdk-8u261-linux-x64.tar.gz
export PATH= $JAVA_HOME/bin:$PATH:
java -version验证环境变量是否配置成功