JDK installation under linux

JDK version: jdk-6u39-linux-i586.rpm.bin

[root@Redhat soft]#  mkdir /usr/java
[root@Redhat soft]# cd /usr/java
[root@Redhat java]# cp jdk-6u39-linux-i586.rpm.bin /usr/java #Copy the jdk installation file to the installation directory  
[root@Redhat java]# ./jdk-6u39-linux-i586.rpm.bin #Installation
[root@Redhat java]#vi /etc/profile
#Add content at the end of the file:  
JAVA_HOME=/usr/java/jdk1.6.0_39
PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME
export PATH
export CLASSPATH

 Keep it as a memo so you can forget it.