CentOS-6.3安装配置JDK-7

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安装说明
安装环境：CentOS-6.3
安装方式：rpm安装
软件：jdk-7u45-linux-x64.rpm
安装位置：/usr/java
下载地址：http://www.oracle.com/technetw ... .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)

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

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

安装JDK
上传新的jdk-7u45-linux-x64.rpm软件到/usr/local/执行以下操作：
[root@admin local]# rpm -ivh jdk-7u45-linux-x64.rpm

JDK默认安装在/usr/java中。

验证安装
执行以下操作，查看信息是否正常：
[root@admin bin]# java

[root@admin bin]# javac

[root@admin bin]# java -version

java version "1.7.0"

Java(TM) SE Runtime Environment (build 1.7.0-b147)

Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)

恭喜，安装成功！

配置环境变量
其实安装完jdk-7u45-linux-x64.rpm后不用配置环境变量也可以正常执行javac、java –version操作，因此一般情况下没有必备进行JDK环境变量的配置。但是为了以后的不适之需，这里还是记录一下怎么进行配置，操作如下：
修改系统环境变量文件
vi + /etc/profile 

JAVA_HOME=/usr/java/jdk1.7.0

JRE_HOME=/usr/java/jdk1.7.0/jre

PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib

export JAVA_HOME JRE_HOME PATH CLASSPATH 



//如果拷贝的直接是JDK文件到Linux服务器上面的话，记得修改bin目录下的可执行文件

chmod 751 /usr/local/jdk/bin/*     

chmod 751 /usr/local/jdk/jre/bin/*


使修改生效
[root@admin local]# source /etc/profile   //使修改立即生效 

[root@admin local]#        echo $PATH   //查看PATH值

查看系统环境状态
[root@admin ~]# echo $PATH

/usr/local/cmake/bin:/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/java/jdk1.7.0/bin:/usr/java/jdk1.7.0/jre/bin:/root/bin
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1 个评论

love553141516

love553141516

大侠，我安装为什么出这个错误啊
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2015-04-24 11:47

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