Step 1: Download Archive File
Download latest version of java JDK

For 32 Bit –

# cd /opt/
# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u67-b01/jdk-7u67-linux-i586.tar.gz"

For 64 Bit –

# cd /opt/
# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u67-b01/jdk-7u67-linux-x64.tar.gz"
After completing download, Extract archive using following command. Use archive file as per your system configuration. For this example we are using 32 bit machine.
# tar zxvf jdk-7u67-linux-i586.tar.gz -C /opt
Step 2: Install JAVA using Alternatives
After extracting java archive file, we just need to set up to use newer version of java using alternatives. Use the following commands to do it.
# cd /opt/jdk1.7.0_67/
# alternatives --install /usr/bin/java java /opt/jdk1.7.0_67/bin/java 2
# alternatives --config java

There are 4 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*  1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
 + 2           /opt/jdk1.7.0_60/bin/java
   3           /opt/jdk1.7.0_65/bin/java
   4           /opt/jdk1.7.0_67/bin/java

Enter to keep the current selection[+], or type selection number: 4 [Press Enter]
Now you may also required to setup javac and jar commands path using alternatives
# alternatives --install /usr/bin/jar jar /opt/jdk1.7.0_67/bin/jar 2
# alternatives --install /usr/bin/javac javac /opt/jdk1.7.0_67/bin/javac 2
# alternatives --set jar /opt/jdk1.7.0_67/bin/jar
# alternatives --set javac /opt/jdk1.7.0_67/bin/javac
Step 3: Check JAVA Version
Use following command to check which version of java is currently being used by system.
# java -version

java version "1.7.0_67"
Java(TM) SE Runtime Environment (build 1.7.0_67-b17)
Java HotSpot(TM) Client VM (build 24.60-b09, mixed mode)
Step 4: Setup Environment Variables
Most of java based application’s uses environment variables to work. Use following commands to set up it.
  • Setup JAVA_HOME Variable
    • # export JAVA_HOME=/opt/jdk1.7.0_67
  • Setup JRE_HOME Variable
    • # export JRE_HOME=/opt/jdk1.7.0_67/jre
  • Setup PATH Variable
    • # export PATH=$PATH:/opt/jdk1.7.0_67/bin:/opt/jdk1.7.0_67/jre/bin
I hope above steps will help you for installing java on your Linux system. You can follow above steps to install multiple version of java as same time but you can use only one version at a time