How to install Java in Linux

Download , Installation and Configuration of jdk on Kali Linux

Download

1)              Open the URL

http://www.oracle.com/technetwork/java/javase/downloads/java-se-6u24-download-338091.html

2)                 Download the file jdk-6u24-linux-i586.bin
(so this file is stored in Home folder otherwise place it in Home folder)

  

Installation

         1)                  Open terminal

<user that logged in>@<computer's hostname>:~#

What you see here is called the prompt. It signifies that the computer is ready and awaiting user input. ~ is the current directory (the user's home directory).

2)              For example you are login as

root@localhost:~#

3)              Run the command as
              root@localhost:~#bash ../ jdk-6u24-linux-i586.bin

           
                           Bash is a sh-compatible command language interpreter that    executes commands read from the standard input or from a file.
                    
          4)             Run the command as

root@localhost:~# exit

 

Configuration

5)           Open terminal

6)       Run the command as
            root@localhost:~# ln –s jdk1.6.0_24  jdk

The ln –s shell command normally uses the symlink system call, 

which creates a symbolic link. jdk1.6.0_24[target_path] 

is the relative or absolute path to which the symbolic link should point. 

Usually the target will exist, although symbolic links may be 

created to non-existent targets. jdk [link_path] is the path of the symbolic link.

7)                 Run the command as
               root@localhost:~# ls –l

8)                 Run the command as
               root@localhost:~# cd ..

9)                 Run the command as
               root@localhost:~# nautilus .
 

 Redirect to the current directory console.

10)             Click on view⟶show hidden files

11)             Right click on file bashrc & open with Text Editor.

12)                 Set the environment variables with following lines type in last.

  
  export JAVA_HOME=$HOME/jdk

  export PATH=.:$JAVA_HOME/bin:$PATH

13)                 Save it.

14)                 Run the command as

     root@localhost:~# exit

            15)                 Open terminal

              16)                Run the command as

 root@localhost:~# java -version

These commands display what version of java (the interpreter that runs Java programs) and javac (the compiler that creates them) you have installed.

You are getting screen as below.