Install jdk mysql tomcat eclipse in ubuntu 12.04

[JDK]

1. Download installation package Official Website: jdk-7-linux-i586.tar.gz

2. Create the installation directory: sudo mkdir/usr/lib/jvm

3. decompress: tar zxvf./jdk-7-linux-i586.tar.gz-C/usr/lib/jvm

4. Set the environment variable: vim ~ /. Bashrc

export JAVA_HOME=/usr/lib/jvm/jdk-7export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH

5.

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-7/bin/java 300  sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk-7/bin/javac 300  update-alternatives --config java

Sudo update-alternatives -- install/usr/bin/java/usr/lib/jvm/jdk-7/bin/java 300

Sudo update-alternatives -- install/usr/bin/javac/usr/lib/jvm/jdk-7/bin/javac 300

Update-alternatives -- config java

Tip:

There is only one candidate item in the java link group:/usr/lib/jvm/jdk1.7.0 _ 17/bin/java. No configuration is required.

Because I have not installed opensdk on ubuntu 12.04 (it should be none of the 12.04 desktop version ). If yes, it is displayed here. Select the required option.

6.

1	java -version

Return Value:

java version "1.7.0_17"Java(TM) SE Runtime Environment (build 1.7.0_17-b02)Java HotSpot(TM) Server VM (build 23.7-b01, mixed mode)

Confirm that the installation is successful.

[Tomcat]

1. Download Tomcat7 from the official website and decompress it. The decompression statement is tar zxvf/download/... tomcat7-C/opt/tomcat7.

For issues that may occur when eclipse introduces tomcat later, I listed them one by one in my blog.

2. Input http: // localhost: 8080 in the browser.

Note: Start and Stop scripts in/etc/init. d/tomcat7
The program is deployed in/var/lib/tomcat7/webapps.

[Mysql]

1.

1	sudo apt-get install mysql-server

Note: You will be prompted to enter the root user password.

[Eclipse]

1. Download, like eclipse-jee-juno-SR2-linux-gtk.tar.gz

2. decompress the package, such as my

1	tar /Download/eclipse-jee-juno-SR2-linux-gtk.tar.gz -C /usr/local/eclipse///eclipseIs a folder created by myself

3. Add the utity project. Vim/usr/share/application/eclipse. desktop // The suffix is desktop.

[Desktop Entry]Type=ApplicationName=EclipseComment=Eclipse Integrated Development EnvironmentIcon=/usr/lib/eclipse/icon.xpmExec=/usr/lib/eclipse/eclipseTerminal=falseCategories=Development;IDE;Java;

You can find eclipse in dash.