CentOS-6.3安装配置JDK-8
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系统环境:CentOS 6.3 64位
安装方式:rpm安装
软件:jdk-8-linux-x64.rpm
进一步查看JDK信息
安装方式:rpm安装
软件:jdk-8-linux-x64.rpm
下载地址:http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
检验系统原版本
- [root@admin ~]# java -version
- java version "1.6.0_24"
- OpenJDK Runtime Environment (IcedTea6 1.11.1) (rhel-1.45.1.11.1.el6-x86_64)
- OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
[root@admin ~]# java -versionjava version "1.6.0_24"OpenJDK Runtime Environment (IcedTea6 1.11.1) (rhel-1.45.1.11.1.el6-x86_64)OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
进一步查看JDK信息
- [root@admin ~]# rpm -qa | grep java
- tzdata-java-2012c-1.el6.noarch
- java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64
[root@admin ~]# rpm -qa | grep javatzdata-java-2012c-1.el6.noarchjava-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64
卸载OpenJDK,执行以下操作
- [root@admin ~]# rpm -e --nodeps tzdata-java-2012c-1.el6.noarch
- [root@admin ~]# rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64
[root@admin ~]# rpm -e --nodeps tzdata-java-2012c-1.el6.noarch[root@admin ~]# rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64
安装JDK
上传新的jdk-7-linux-x64.rpm软件到/usr/local/执行以下操作:
- 1>上传jdk-8-linux-x64.rpm到 usr/local
- 2> [root@AY1403221420500563ebZ ~]# cd /usr/local/
- [root@AY1403221420500563ebZ local]# rpm -ivh jdk-8-linux-x64.rpm
- Preparing... ########################################### [100%]
- 1:jdk ########################################### [100%]
- Unpacking JAR files...
- rt.jar...
- jsse.jar...
- charsets.jar...
- tools.jar...
- localedata.jar...
- jfxrt.jar...
- [root@AY1403221420500563ebZ local]#
- 注:JDK默认安装在/usr/java中
- 3>验证jdk是否安装成功
- [root@AY1403221420500563ebZ local]# java -version
- java version "1.8.0"
- Java(TM) SE Runtime Environment (build 1.8.0-b132)
- Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)
- [root@AY1403221420500563ebZ local]#
- 4> 修改系统环境变量文件
- vi + /etc/profile
- JAVA_HOME=/usr/java/jdk1.8.0
- JRE_HOME=/usr/java/jdk1.8.0/jre
- PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
- export JAVA_HOME JRE_HOME PATH CLASSPATH
- 5>使修改生效
- source /etc/profile //使修改立即生效
- 6>查看环境变量
- echo $PATH
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