本文的hadoop安装是基于hortonworks的RPMS安装

文档请见：

http://www.oracle.com/technetwork/java/javase/downloads/jdk-6u31-download-1501634.html

下载java jdk-6u31-linux-x64.bin

#Java settings

chmod u+x /home/jdk-6u31-linux-x64.bin 

/home/jdk-6u31-linux-x64.bin -noregister

mv  jdk1.6.0_31  /usr/

#Create symbolic links (symlinks) to the JDK.

mkdir /usr/java

ln -s /usr/jdk1.6.0_31/ /usr/java/default

ln -s /usr/java/default/bin/java /usr/bin/java

#Set up your environment to define JAVA_HOME 

#to put the Java Virtual Machine and the Java compiler on your path.

echo "export JAVA_HOME=/usr/java/default"  >>/etc/profile

echo "export PATH=\$JAVA_HOME/bin:\$PATH"  >>/etc/profile

source  /etc/profile

     本文转自andylhz 51CTO博客，原文链接：http://blog.51cto.com/andylhz2009/1019703，如需转载请自行联系原作者