ubuntu install Oracle JDK/JRE
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0. OS Env
Ubuntu 13.04 x86_64
1.Download JDK
Download Addr: http://www.oracle.com/technetwork/java/javase/downloads/index.html
jdk-7u21-linux-x64.tar.gz
2.Install
root@alan-O-E-M:/home/alan# tar xvf jdk-7u21-linux-x64.tar.gz
root@alan-O-E-M:/home/alan# mv jdk1.7.0_21 /usr/local/
root@alan-O-E-M:/home/alan# vim /etc/profile
######
export JAVA_HOME=/usr/local/jdk1.7.0_21
export JRE_HOME=/usr/local/jdk1.7.0_21/jre
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
export CLASSPATH=$CLASSPATH:.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
root@alan-O-E-M:/home/alan# source /etc/profile
root@alan-O-E-M:/home/alan# update-alternatives –install “/usr/bin/java” “java” “/usr/local/jdk1.7.0_21/bin/java” 300
root@alan-O-E-M:/home/alan# update-alternatives –install “/usr/bin/javac” “javac” “/usr/local/jdk1.7.0_21/bin/javac” 300
root@alan-O-E-M:/home/alan# update-alternatives –install “/usr/bin/javaws” “javaws” “/usr/local/jdk1.7.0_21/bin/javaws” 300
root@alan-O-E-M:/home/alan# update-alternatives –config java
root@alan-O-E-M:/home/alan# update-alternatives –config javac
root@alan-O-E-M:/home/alan# update-alternatives –config javaws
alan@alan-O-E-M:~$ java -version
java version “1.7.0_21″
Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)
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