Install JDK

1. Download jdk-{version}-linux-x64.rpm from Oracle.

2. install

rpm -Uvh jdk-{version}-linux-x64.rpm

 

3. alternatives 

 

# java
alternatives --install /usr/bin/java java /usr/java/latest/bin/java 1

# javac
alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac 1

# jar
alternatives --install /usr/bin/jar jar /usr/java/latest/bin/jar 1

# javaws
alternatives --install /usr/bin/javaws javaws /usr/java/latest/bin/javaws 1

 

 

 

3. Environment varaibles

 

# JDK7
export JAVA_HOME=/usr/java/latest
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

# Java environment variables
export ANT_HOME=/data/ant
export PATH=$PATH:${ANT_HOME}/bin
export M2_HOME=/data/maven
export M2=${M2_HOME}/bin
export PATH=$PATH:${M2}
export CATALINA_HOME=/data/tomcat