Setting java path in linux

After installing JDK or JRE on Linux/Unix platform, you have to set PATH environment variable so that you can run the executables (javac.exe, java.exe, javadoc.exe, and so on) from any directory without having to type the full path of the command.
 
 Steps to set up java path in linux

1. Create a java.sh file in /etc/profile.d directory with content as follows: 

#!/bin/bash
           
JAVA_HOME=/usr/java/jdk1.7.0_17
                    
PATH=$JAVA_HOME/bin:$PATH
                                       
export PATH JAVA_HOME

The file contains various shell commands which set and export necessary environment variables for Java. Shell settings from configuration files in the /etc/profile.d directory are gathered by/etc/profile during login, setting up user environment information for every user.  

2.  Assign execute permissions:

# chmod 755 java.sh

3. You can verify the path  by typing the below command in the terminal

# java -version