Set up Java development environment under Linux system

A, download

The first, of course, is to download.

Address: (link: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html)

Select different versions as needed.

Second, the decompression

Unzip the downloaded.tar.gz file.

Unzip using the following command:

sudo tar zxvf ./jdk-7u45-linux-x64.tar.gz

To facilitate administration, you can move the unzipped files to another folder.

Don't do it.

I moved the file to /opt/Java/ JDK/directory.

To facilitate the next step of setting the environment variables, the folder was changed to a shorter name - jdk1.7

You can rename the folder using the following command

sudo mv jdk1.7.0_45/ jdk1.7/

Set environment variables

Edit the.bashrc file.

Enter the following command at the terminal:

vi ~/.bashrc

At the end of the file, add the following lines:

export JAVA_HOME=/opt/Java/jdk/jdk1.7

export JRE_HOME=${JAVA_HOME}/jre

export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib

export PATH=${JAVA_HOME}/bin:$PATH

For the changes to take effect immediately, execute the following command at the terminal:

source ~/.bashrc

PS: when there is an error in modifying the PATH of ~ /.bashrc, other commands of the system cannot be used

export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games

P.S. before modifying the.bashrc file, it is best to backup the command:

Cp. Bashrc. Bash_origina