ubuntu安装jdk全过程

1。 sudo chmod u+x ./jdk-6u29-linux-x64.bin 

2。 ./jdk-6u29-linux-x64.bin

3。配置classpath，修改所有用户的环境变量 
$ sudo gedit /etc/profile

在末尾加入:

#set java environment 
JAVA_HOME=/soft/android/JDK/jdk1.6.0_29
export JRE_HOME=/soft/android/JDK/jdk1.6.0_29/jre 
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH 
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

4. sudo reboot

5.待机器重启，输入:

yan@yan-G31-M7-TE:~$ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02, mixed mode)

OK , 安装JDK完毕。