Virtual Machine Linux----Ubuntu1204----installation jdk1.8

1. Introduction

Here is the main point, how to install the jdk1.8,rpm in the way of the compression package Ubuntu1204 the direct operation of the line.

2. Steps

2.1 Downloads

Address: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html, download 64-bit compression package in Linux environment, Jdk-8u45-linux-x64.tar.gz

2.2 Uploads

Can be through the Xftp tool, copy files to the Linux environment, here I put in my own built directory, note that the upload may prompt no permissions, give the folder write permission on the line

2.3 Decompression

tar -zxvf jdk-8u45-linux-x64.gz# The directory after decompression is:/app/programs/jdk1. 8. 0_45

2.4 Configuring environment variables

VI /etc/profile

At the bottom of the file, add the following code:

#set java environmentexport java_home=/app/programes/jdk1. 8 . 0_45export jre_home=${java_home}/jreexport CLASSPATH=.:${java_home}/lib:${jre_home}/  Libexport PATH=${java_home}/bin: $PATH

Save, exit.

2.5 Make the configuration file effective (sometimes does not work after execution, it is recommended to restart)

Source/etc/profile

2.6 Testing

Java-version

If the version information of the JDK is output, the description succeeds.

　　

　　　　

Virtual Machine Linux----Ubuntu1204----installation jdk1.8