ubuntu 12.04 java 1.6

1，下载jdk  http://www.oracle.com/technetwork/java/javase/downloads/jdk-6u29-download-513648.html

 

 

$ cd /usr/lib

$ mkdir jvm

$ sudo cp jdk-6u27-linux-i586.bin /usr/lib/jvm

$ cd /usr/lib/jvm

 

$ sudo chmode +x  jdk-6u27-linux-i586.bin  （这一步不要漏了，修改文件的访问权限）

$ sudo ./jdk-6u27-linux-i586.bin

 

$ sudo ln -s jdk1.6.0_27 java-6-sun

 

$ sudo cp /etc/environment /etc/environment.bak

$ sudo vi /etc/environment

 

PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/lib/jvm/java-6-sun/bin"

JAVA_HOME="/usr/lib/jvm/java-6-sun" 

 

CLASSPATH="/usr/lib/jvm/java-6-sun/lib"