Ubuntu12.10 complete JDK/chromejre environment configuration tutorial

In my opinion, Linux is suitable for serving as a server. Like Windows, it has a public face and is favored by many people. It is based on the mass market & rdquo; grass-roots & rdquo; the building is suitable. At first, I installed Ubuntu with a try-on mentality. After two days, I found that the Ubuntu Desktop version is more interesting than Win8, and unexpected things are even more exciting, with a lot of software, I can really feel the idea of free sharing, open-source and ad-free interest, and I cannot tell the overall feeling. One word: & rdquo; Shuai & rdquo ;,

In my opinion, Linux is suitable for serving as a server. For example, Windows has a public face and is favored by the masses. It is more appropriate to go to the mass market to build a "grass-roots" architecture. At first, I installed Ubuntu with a try-on mentality. After two days, I found that the Ubuntu Desktop version is more interesting than Win8, and unexpected things are even more exciting, with a lot of software, I can really feel the idea of free sharing, open source without advertisement, and I can't tell the overall feeling. One word: "handsome", two words: "handsome ". Now we have installed a win8 and Ubuntu 12.10, but basically we don't need Win8. below we record the two configuration processes of java and the use of AlwaysOnPC:

1. Install JDK * .tar.gz
1. Go to the official Oracle website and go to JDK: release.
2. Move the downloaded jdk-7u9-linux-x64.tar.gz file to the installation directory. I will directly put it in the/usr directory.
3. Switch to the/usr directory cd/usr
Decompress jdk:
Sudo tar-zxvf jdk-7u9-linux-x64.tar.gz
4. OK. Configure the environment variable sudo gedit/etc/profile.
5. Add the following content to the/etc/prifile file (Note: here the JDK path is changed to your own installation path ):
6. export JAVA_HOME =/usr/jdk1.7.0 _ 09
Export JRE_HOME =/usr/jdk1.7.0 _ 09/jre
Export PATH = $ JAVA_HOME/bin: $ JAVA_HOME/jre/bin: $ PATH
Export CLASSPATH = $ CLASSPATH:.: $ JAVA_HOME/lib: $ JAVA_HOME/jre/lib
7. Make the modified/etc/profile take effect immediately./etc/profile
8. modify the system's default JDK and make it take effect immediately (Note: change to your own path. If you want to install myeclipse, this step is required; otherwise, an error will occur ): sudo update-alternatives -- install "/usr/bin/java" "java" "/usr/jdk1.7.0 _ 09/bin/java" 300
Sudo update-alternatives -- install "/usr/bin/javac" "javac" "/usr/jdk1.7.0 _ 09/bin/javac" 300
Sudo update-alternatives -- install "/usr/bin/javaws" "javaws" "/usr/jdk1.7.0 _ 09/bin/javaws" 300
Sudo update-alternatives -- config java
Sudo update-alternatives -- config javac
Sudo update-alternatives -- config javaws
1. OK. After the operation is completed, use java-version to view the effect. If it is the JDK we just installed, it will be said... You know!

Jdk_1.7.0.09.tar.gz is configured successfully!

2. Tips for running commands in Java: java-jar *. jar // run the compiled. jar file.
Javac *. java // compile the. java File
Javaws *. jnlp // run the. jnlp File