原文鏈接:http://my.oschina.net/eviltuzki/blog/369325
1.檢查現有版本JDK
1
2
3
4
|
[root@TuzkiServer ~] # java -version java version "1.6.0_24" OpenJDK Runtime Environment (IcedTea6 1.11.1) (rhel-1.45.1.11.1.el6-i386) OpenJDK Server VM (build 20.0-b12, mixed mode) |
2.查找java相關文件並卸載
1
2
3
4
|
[root@TuzkiServer ~] # 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.i686 [root@TuzkiServer ~] # rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.i686 |
3.檢查一下是否卸載乾淨了
1
2
|
[root@TuzkiServer ~] # java -version - bash : /usr/bin/java : 沒有那個文件或目錄 |
4.安裝jdk7
1
2
3
4
5
6
7
8
9
10
11
12
13
|
[root@TuzkiServer ~] # rpm -ivh jdk-7u71-linux-i586.rpm Preparing... ########################################### [100%] 1:jdk ########################################### [100%] Unpacking JAR files... rt.jar... jsse.jar... charsets.jar... tools.jar... localedata.jar... jfxrt.jar... plugin.jar... javaws.jar... deploy.jar... |
5.檢查是否安裝成功
1
2
3
4
|
[root@TuzkiServer ~] # java -version java version "1.7.0_71" Java(TM) SE Runtime Environment (build 1.7.0_71-b14) Java HotSpot(TM) Server VM (build 24.71-b01, mixed mode) |
6.以備不時之需,配置環境變量
1
|
vi + /etc/profile |
1
2
3
4
5
6
|
// 添加內容 JAVA_HOME= /usr/java/jdk1 .7.0_71 JRE_HOME= /usr/java/jdk1 .7.0_71 /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 |
1
2
3
|
[root@TuzkiServer ~] # source /etc/profile //立即生效 [root@TuzkiServer ~] # echo $PATH //查看PATH /usr/lib/qt-3 .3 /bin : /usr/local/sbin : /usr/local/bin : /sbin : /bin : /usr/sbin : /usr/bin : /root/bin : /usr/java/jdk1 .7.0_71 /bin : /usr/java/jdk1 .7.0_71 /jre/bin
|