【Linux】安装JDK1.8
本测试是在CentOS 7.3下安装,步骤如下:
1:Oracle 官方网站下载 JDK,注意版本和位数
http://www.oracle.com/technetwork/java/javase/downloads/index.html
2:将JDK上传至 Linux 指定目录,步骤略,上传后,如下:
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[root@node1 soft]# ls jdk-8u151-linux-x64.tar.gz jdk-8u151-linux-x64.tar.gz [root@node1 soft]# |
3:将JDK解压至安装目录,本测试解压至/usr/local
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[root@node1 soft]# tar -xzvf jdk-8u151-linux-x64.tar.gz -C /usr/local/ ...... [root@node1 soft]# cd /usr/local/ [root@node1 local]# ls bin etc games include jdk1.8.0_151 lib lib64 libexec sbin share src [root@node1 local]# [root@node1 local]# cd jdk1.8.0_151/ [root@node1 jdk1.8.0_151]# ls bin COPYRIGHT db include javafx-src.zip jre lib LICENSE man README.html release src.zip THIRDPARTYLICENSEREADME-JAVAFX.txt THIRDPARTYLICENSEREADME.txt [root@node1 jdk1.8.0_151]# [root@node1 jdk1.8.0_151]# pwd /usr/local/jdk1.8.0_151 [root@node1 jdk1.8.0_151]# |
4:配置环境变量
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[root@node1 jdk1.8.0_151]# pwd /usr/local/jdk1.8.0_151 [root@node1 jdk1.8.0_151]# vi ~/.bash_profile ...... ## 在文件尾部增加如下内容,注意:等号两边不允许有空格 export JAVA_HOME=/usr/local/jdk1.8.0_151 export PATH=$JAVA_HOME/bin:$PATH ## 保存退出 |
5:验证JDK安装成功
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## 使修改后的环境变量生效 [root@node1 jdk1.8.0_151]# . ~/.bash_profile [root@node1 jdk1.8.0_151]# ## 确认JDK已安装成功 [root@node1 jdk1.8.0_151]# java -version java version "1.8.0_151" Java(TM) SE Runtime Environment (build 1.8.0_151-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode) [root@node1 jdk1.8.0_151]# |