安装java :
1.JDK下载:
在3http://www.Oracle.com/tech network/Java/Java se/downloads/Java-archive-downloads-Java se7- 521261.html中输入Java
2 .解冻:
[ root @ centos-LX/] # tar/home/LX/download/JDK-7u51-Linux-i586.tar.gz
复制java文件:
[ root @ centos-LX/] # CP-r/home/LX/download/JDK1.7.0_ 51/usr/Java
修改/etc/profile文件:
[ root @ centos-LX/] # vim/etc /简档
5 .在配置文件末尾添加:
导出Java _ home=/usr/Java/JDK1.7.0_ 51
export JRE_HOME=$JAVA_HOME/jre
导出类路径=. $ Java _ home/lib/dt.jar : $ Java _ home/lib/tools.jar
导出路径=$ path : $ Java _ home/jjdzt
6 .保存后执行:
[根@ centos-LX/] # source/etc /配置文件
验证java :
[root@centos-lx /]# java -version
“bash :/usr/Java/JDK1.7.0_ 51/jjdzt/Java 3360/lib/LD-Linux.so.23360 badelfinterpreter 3360没有它”
[ root @ centos-LX/] # yuminstallmesa-libgl.i686
正确安装即可。
要卸载CentOS附带的OpenJdk,请:
显示java信息:
[ root @ centos-LX/] # rpm-QA|grep Java
显示:
tzdata-java-2012c-1.el6.noarch
Java-1.6.0-open JDK-1.6.0.0-1.45.1.11.1.el6.x86 _ 64
2 .卸载:
[ root @ centos-LX/] # rpm-e-- nodepstzdata-Java-2012 c-1.el6.noarch
[ root @ centos-LX/] # rpm-e-- nodeps Java-1.6.0-0.0-1.45.11.1.el6.x86 _ 65306;
然后:
[ root @ centos-LX/] # rpm-QA|grep gcj
[ root @ centos-LX/] # rpm-QA|grep JDK
如果发生找不到openjdk source的错误,也可以这样卸载
[ root @ centos-LX/] # yum-yremovejavatzdata-Java-2012 c-1.el6.noarch
[ root @ centos-LX/] # yum-yremovejavajava-1.6.0-open JDK-1.6.0.0-1.45.11.1.el6.x86 _ 65344