Instal JDK7 on Amazon AMI

jdk7-on-Amazon AMI

# First verify the version of Java being used is not SunJSK.
java -version

# Get the latest Sun Java SDK from Oracle http://www.oracle.com/technetwork/java/javase/downloads/jdk-7u1-download-513651.html
wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u51-b13/jdk-7u51-linux-x64.tar.gz"

# Rename the file downloaded, just to be nice
mv jdk-7u1-linux-i586.rpm\?e\=1320265424\&h\=916f87354faed15fe652d9f76d64c844 jdk-7u1-linux-i586.rpm

#Untar and move to /usr/java

# Check if the default java version is set to sun jdk
java -version

# If not then lets create one more alternative for Java for Sun JDK
sudo /usr/sbin/alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_51/bin/java 20000

# Set the SUN JDK as the default java
sudo /usr/sbin/alternatives --config java

#Symlinks to /usr/jvm
ln -s /usr/java/default/jre /usr/lib/jvm/jre
ln -s /usr/share/java /usr/lib/jvm-exports/jre

# Verify if change in SDK was done.
java -version