Alibaba Cloud Linux Host installation JDK

1, first to see the server version of the system, is 32-bit or 64-bit

Uname-alinux ay131105092932706327z 2.6.32-358.6.2.el6.x86_64 #1 SMP Thu may 20:59:36 UTC, x86_64 x86_64 x86_64 GNU /linux

X86_64 is 64 bit, if you're not sure, you can change the command again.

Getconf Long_bit64

The above command is to view the current operating mode of the CPU

2. Download the 64-bit version of the JDK

jdk-7u67-linux-x64.rpm

Http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

3, using FTP tools such as XFTP,WINSCP, download good files to the server, I was uploaded to the home folder

4. See if you currently have a JDK installed

Rpm-qa |grep jdkjdk-1.7.0_65-fcs.i586

If any, remove

Rpm-e jdk-1.7.0_65-fcs.i586

5, enter the installation command, do not need to give permission, can directly execute

rpm-ivh/home/jdk-7u67-linux-x64.rpm

6. Setting Environment variables

Vim/etc/profileexport java_home=/usr/java/jdk1.7.0_67export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/ Tools.jarexport path= $PATH: $JAVA _home/binexport java_home CLASSPATH PATH

6. Enter the command to check if the settings are installed.

Javajava-versionjavac

No need to restart the server