Ubuntu10.4 install jdk1.6

Alicus520

You know,If you want to develop java applications ,you'd better install jdk.

Today,I will introduce you how to intall jdk1.6 on Ubuntu.Just follow me step by step.

First step
    you should download jdk file from sun offcial website,
    URL: http://www.oracle.com/technetwork/java/javase/downloads/jdk-6u29-download-513648.html (fixed)
    fileName : jdk-6u29-linux-i586.bin
    Tips: 1)Before you will download this file ,you should accept license agreement.
            2)If your system is Ubuntu10.4 or other 32-bit system,you can't download the  jdk-6u29-linux-x64.bin.When you use sudo sh jdk-6u29-linux-x64.bin,it will create a file that file's name is invalid encoding.
 
Second step
    after file is donwloaded,we also can use command
ls     to scan the file list.

Third step
    OK,now we can install jdk,write command :
sudo sh jdk-6u29-linux-i586.bin    A few miniutes later,you will be asked to press Enter key,Just do, You will see 'Done'.
    Ok,Now jdk has been instaled by us，next step we will config environment variables for java

Fourth step
    enter the command :
sudo gedit /etc/environment     if you are similar with vim,you can use the command :
sudo vi /etc/environment     Add the following lines in the end of file.
export JAVA_HOME=/home/alicus/Downloads/jdk1.6.0_29 export JRE_Home=>/home/alicus/Downloads/jdk1.6.0_29/jre export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib   
    then enter command :
source ~/.bashrc     it makes the changes effective

Fifth Step
    You should know Ubuntu10.4 make the openjdk as its default jdk ,so we should make sun jdk to be
    the default one,just use following commands :
sudo update-alternatives --install /usr/bin/java java /home/alicus/Downloads/jdk1.6.0_29/bin/java 300sudo update-alternatives --install /usr/bin/java java /home/alicus/Downloads/jdk1.6.0_29/bin/javac 300     use following command to scan the jdk priority:
sudo update-alternatives --config java  to  
    Tips: sudo update-alternatives -- install is used to change the priority.
 
OK!Now you can enter
java -version  to test if jdk is ok.

If you can see java version "1.6.0_29",Congratulations!!

If you have any questions,just contact me.
Email:alicus890824@gmail.com