Ubuntu-14.04.1-desktop Install configuration JDK1.8 environment variables on the

First, download the JDK

1 wget http://download.oracle.com/otn-pub/java/jdk/8u25-b17/ jdk-8u25-linux-x64.tar.gz

(Note: If the download is not open, you can download it from the JDK website)

Second, decompression and installation

1 sudo mkdir /usr/lib/JVM2sudotar -zxvf jdk-8u25-linux-x64. tar. Gz-c/USR/LIB/JVM

Third, modify the environment variables

1 sudo vim/etc/profile

(Note: Vim is a text editor, Ubuntu is not installed by default, you can use Gedit instead)

Add to:

1 #set Java Environment 2 Export JAVA_HOME=/USR/LIB/JVM/JDK1. 8 . 0_25 3 export jre_home=${java_home}/4 export classpath=.:${java_home}/lib:${jre_home}/  Lib5 export Path=${java_home}/bin: $PATH

Save exit.

Iv. Configuring the default JDK version

To set up our installed JDK as the default JDK, do the following. (300 indicates the priority of the JDK)

1  sudo update-alternatives--install /usr/bin/java java/usr/lib/jvm/java-7  2sudo update-alternatives--install /usr/bin/javac javac/usr/lib/jvm/java-7   -

Execute code:

1 sudo

If there are multiple JDK will be listed, the native only one, shown as follows:

Multiple JDK will appear as follows (image from Network):

V. Testing

Enter in terminal

1 java-version

Shown below:

Indicates that the JDK environment is configured to complete.

You can also test the following commands:

1 Java 2 Javac

Ubuntu-14.04.1-desktop Install configuration JDK1.8 environment variables on the