JDK 1.7 installation details (CentOS 6.4)

Install JDK (Java Development Kit) in CentOS 6.4)

1) download JDK 1.7 (1.7.0 _ 25)

Is:

Http://www.Oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

Select "Accept License Agreement"

Select a 64-bit rpm package download: jdk-7u25-linux-x64.rpm

2) install JDK 1.7

Create a java folder under usr and run the terminal command: (switch to root: su root)

[Root @ www.bkjia.com linux] # cd/usr

[Root @ www.bkjia.com linux] # mkdir java

[Root @ www.bkjia.com linux] # mv 'jdk path after download' 'move jdk path' (directly drag the folder to the terminal to automatically add the path)

Installation

[Root @ www.bkjia.com linux] # rpm-ivh 'jdk installation package Path'

Just wait for Installation

3) environment variable configuration

Configure JAVA_HOME

# ExportJAVA_HOME = <jdk-install-dir>

<Jdk-install-dir> indicates the jdk installation path (directly drag the folder location), for example,/usr/java/jdk1.7.0 _ 25.

Configure PATH

# Export PATH = $ JAVA_HOME/bin: $ PATH4) check that the environment variable JAVA_HOME has been set for the root user

# Sudo env | grep JAVA_HOME5) Add to file/etc/sudoers

Open the file:

[Root @ www.bkjia.com linux] # vim/etc/sudoers

Enter the editing status:

Press the "I" Key

Add the following line:

Defaults env_keep + = JAVA_HOME Ø exit the editing status:

Press Esc on the keyboard.

Save and exit the file

Press the "Shift" + ":" key on the keyboard, enter: wq; or force Exit: wq !; Do not save the exit file: q

Install and configure JDK 7 in CentOS 6.3