Ubuntu12.04x64install jdk-7u45-linux-x64.tar.gz

Ubuntu12.04x64install jdk-7u45-linux-x64.tar.gz process record: 1. download the latest version jdk64-bit((jdk-7u45-linux-x64.tar.gz) from the official website-

Ubuntu 12.04x64 install jdk-7u45-linux-x64.tar.gz process record:

1. First download the latest jdk 64-bit (jdk-7u45-linux-x64.tar.gz)

Download http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html from official website

2.Copy jdk-7u45-linux-x64.tar.gz to the/usr/lib/jvm/directory. If no jdk folder exists, create the folder. Run the following command:

Sudo mkdir jvm // create a folder jdk

Sudo cp-r ~ /Download/jdk-7u45-linux-x64.tar.gz/usr/lib/jvm // copy the downloaded file to the newly created directory

Sudo tar-zxvg jdk-7u45-linux-x64.tar.gz // Extract files

3.Set environment variables and use nano to open the/etc/profile file.

Sudo nano/etc/profile

Add the following at the end of the file:

Export JAVA_HOME =/usr/lib/jvm/jdk1.7.0 _ 45

Export JRE_HOME =/usr/lib/jvm/jdk1.7.0 _ 45/jre

Export PATH = $ JAVA_HOME/bin: $ JAVA_HOME/jre/bin: $ PATH

Export CLASSPATH = $ CLASSPATH:.: $ JAVA_HOME/lib: $ JAVA_HOME/jre/lib

4.Modify the system's default jdk.

$ Sudo update-alternatives -- install/usr/bin/java/usr/lib/jvm/jdk1.7.0 _ 45/bin/java 300

$ Sudo update-alternatives -- install/usr/bin/javac/usr/lib/jvm/jdk1.7.0 _ 45/bin/javac 300

$ Sudo update-alternatives -- config java

$ Sudo update-alternatives -- config javac

5.Detection, input java-version

Java version "1.7.0 _ 45"

Java (TM) SE Runtime Environment (build 1.7.0 _ 45-b18)

Java HotSpot (TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

Reading:

Install JDK 7 (with Clojure download) http://www.linuxidc.com/Linux/2012-10/71557.htm under Ubuntu

Install JDK1.7 http://www.linuxidc.com/Linux/2012-06/62239.htm in Ubuntu 12.04

For more information about Ubuntu, see Ubuntu special page http://www.linuxidc.com/topicnews.aspx? Tid = 2