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healychan
December 23rd, 2005, 12:23 PM
After a long time of searching and testing, I managed to install the JDK and gcc for programming practice. Here is the summary of my experience. I hope it can help you and save your time.

If you want to program with C/C++ please do the following:

sudo apt-get install build-essential

this will install the header files, make and debugger for C/C++. You can now programming with C/C++:razz:
(p.s. the command above was taken from http://www.ubuntuforums.org/showthread.php?t=106574#4 )


To those who want to install the Blackdown JDK 1.4.

1. You need to enable multiverse and universe first. This link http://help.ubuntu.com/starterguide/C/faqguide-all.html#addinguniverse will guide you to do so.
2. Search for j2sdk1.4 and install that package.


To those who want to install the lastest Sun JDK 1.5 update 6.

1. Goto http://java.sun.com/j2se/1.5.0/download.jsp.
2. Select the "Download JDK 5.0 Update 6"
3. Download the "Linux self_extracting file". Not the RPM one. (64 bit user please download the "Linux AMD64 self_extracting file".
4. Move the bin file to the directory wherever you like.
5. On the command line. type "./filename" where the filename is the bin file you downloaded. Make sure you have the execute permission for this file.
6. Add the of path to the $PATH. The path depends on where you put the bin file. For example, if you put the bin file in "/usr/lib/", then the whole path should be "/usr/lib/java/bin".


Install Sun JDK as a debian package
1. Goto http://java.sun.com/j2se/1.5.0/download.jsp.
2. Select the "Download JDK 5.0 Update 6"
3. Download the "Linux self_extracting file". Not the RPM one. (64 bit user please download the "Linux AMD64 self_extracting file".
4.make sure you install fakeroot package.
5.chmod +x to the bin file you just download
6.type "fakeroot make-jpkg {the bin file name}", this will create a debian package
7.type "sudo dpkg -i {the deb file name}", this will install the debian package you created. You can now program with java:razz:
8.finally, move the deb file to /var/cache/apt/archives/ directory. This is optional.


Setup the PATH for java etc..
This is easy. Type
sudo update-alternatives --config java
a list of options will be display, pick the java you want to use by putting a number.
EEEEEEEEEasy:p

There are many ways to add the path to $PATH. You can either do it in ~/.bashrc or /etc/skel/.bashrc or /etc/bash.bashrc
Please feel free to ask any question if you get confuse;)

To check which java you are using, type "java -version". Check the version display to see if it is what you want. Set the PATH again if it is not the java you expected.



Also, if I made any mistake here or you know a better way to install, PLEASE reply and let us know. Thanks;)

More information here http://java.sun.com/j2se/1.5.0/install-linux.html#self-extracting
and here http://www.docuverse.com/blog/donpark/EntryViewPage.aspx?guid=f171bafc-abce-4d2e-a18b-3aba4ad32c52
EnGee
December 23rd, 2005, 01:32 PM
Thanks for the Guide :)
I think there is a better way (and little bit longer) to install Java (and related IDEs) :
1.http://www.docuverse.com/blog/donpark/EntryViewPage.aspx?guid=f171bafc-abce-4d2e-a18b-3aba4ad32c52
2.http://blogs.sun.com/roller/page/coldrick?entry=java_development_on_ubuntu_part
Revert
December 23rd, 2005, 04:28 PM
Can you walk me through how to set the path? It's installed (think I used Automatix this time around), and I can compile, but I can't run it (get the NoClassDefFoundError each time). I saw in another thread something concerning JAVA_HOME variable. Does that need to be set by hand too? If so, how do you do that?

Sorry, still pretty new to Linux. ;)

Edit: Error's taken care of; it was due to a lack of command line familiarity on my part.
EnGee
December 23rd, 2005, 06:11 PM
Revert
I consider myself new to linux also ;)
Anyway here what i did (I suppose you installed the Sun JDK 5 the right way):
1. Open the terminal and write sudo gedit
2. Browse and open bash.bashrc in /etc directory and add these lines in the end of the file :
export JAVA_HOME=/usr/lib/j2sdk1.5-sun/
export JDK_HOME=/usr/lib/j2sdk1.5-sun/

Some of the programs are searching for the second line! so it won't hurt to add it. Save the file (and I don't remember if you need to restart).
It should be another elegant way, but anyway it works for me.

I don't know if this is related to the error you have! What java -version tells you?
healychan
December 23rd, 2005, 07:58 PM
Can you walk me through how to set the path? It's installed (think I used Automatix this time around), and I can compile, but I can't run it (get the NoClassDefFoundError each time). I saw in another thread something concerning JAVA_HOME variable. Does that need to be set by hand too? If so, how do you do that?

Sorry, still pretty new to Linux. ;)

Could you post the output of:
echo $PATH
healychan
January 4th, 2006, 04:43 AM
I made some changes to the guide. I added the instruction about how
to install java as a debian package.

This is a lot easier for the people who are not familiar with Linux administration
since you can use Synatic Package Manager to maintain your package.

I also describe how to edit the PATH a bit.

Please reply if I made any mistake and I will fix it as soon as possible
Thx;)
coredump
January 4th, 2006, 05:03 PM
I'd just like to point out (because I wasn't aware of it myself) that the C compiler (GCC) and all the 'build-essential' stuff is on the Ubuntu install CD-ROM. This means that you don't need a network connection to install the compiler! All you have to do is run Synaptic from the desktop menu and select the packages, with the CD-ROM ready in the drive. Then, when you click on 'Accept', it reads the CD-ROM and installs the packages you've requested.

I'd made the assumption that the installer installs everything that's on the CD-ROM, and I'd have to use a broadband connection to download 'gcc'. In fact, 'gcc' is right there on the CD-ROM, just not installed.

Hope that helps somebody.
migraineboy
January 7th, 2006, 02:52 PM
To those who want to install the lastest Sun JDK 1.5 update 6.

1. Goto http://java.sun.com/j2se/1.5.0/download.jsp.
2. Select the "Download JDK 5.0 Update 6"
3. Download the "Linux self_extracting file". Not the RPM one. (64 bit user please download the "Linux AMD64 self_extracting file".
4. Move the bin file to the directory wherever you like.
5. On the command line. type "./filename" where the filename is the bin file you downloaded. Make sure you have the execute permission for this file.
6. Add the of path to the $PATH. The path depends on where you put the bin file. For example, if you put the bin file in "/usr/lib/", then the whole path should be "/usr/lib/java/bin".


Setup the PATH for java etc..
This is easy. Type
sudo update-alternatives --config java
a list of options will be display, pick the java you want to use by putting a number.
EEEEEEEEEasy:p

There are many ways to add the path to $PATH. You can either do it in ~/.bashrc or /etc/skel/.bashrc or /etc/bash.bashrc
Please feel free to ask any question if you get confuse;)


All right I made everything you told me to do, but, I'm sorry, I'm just a noob, I really don't know what means the step number six. I've made the step number five and after I agreed with the terms, aparently the java was installed. But I don't know how to do the final step to make it works...
Withou making the step number six I type sudo update-alternatives --config java and no option of java 1.5.0_06 show, only the 1.5.0_05 version appears. the bin file is in /home/arilson and in the terminal I just typed "./filename". Can you tell me exactly what I have to type to finish the step number six.
P.S: sorry for any errors in my english, I'm brazilian.
healychan
January 7th, 2006, 08:44 PM
All right I made everything you told me to do, but, I'm sorry, I'm just a noob, I really don't know what means the step number six. I've made the step number five and after I agreed with the terms, aparently the java was installed. But I don't know how to do the final step to make it works...
Withou making the step number six I type sudo update-alternatives --config java and no option of java 1.5.0_06 show, only the 1.5.0_05 version appears. the bin file is in /home/arilson and in the terminal I just typed "./filename". Can you tell me exactly what I have to type to finish the step number six.

I assume you install java within your home directory "/home/arilson".
If you type "ls" in there, you should see a directoy named "j2sdk1.5-sun".
If you can find "j2sdk1.5-sun", than do the following.

1. cd
2. gedit .bashrc
3. add "export PATH=/home/arilson/j2sdk1.5-sun/bin:$PATH" to the end of the file
4. save file and restart the Terminal

Now type "echo $PATH"
If you can find "/home/arilson/j2sdk1.5-sun/bin" in the output, it is done:razz:


P.S: sorry for any errors in my english, I'm brazilian.

You don't have to say sorry, in fact, I am Chinese:razz:

Good luck!!!!!
migraineboy
January 8th, 2006, 07:18 AM
I assume you install java within your home directory "/home/arilson".
If you type "ls" in there, you should see a directoy named "j2sdk1.5-sun".
If you can find "j2sdk1.5-sun", than do the following.

1. cd
2. gedit .bashrc
3. add "export PATH=/home/arilson/j2sdk1.5-sun/bin:$PATH" to the end of the file
4. save file and restart the Terminal

Now type "echo $PATH"
If you can find "/home/arilson/j2sdk1.5-sun/bin" in the output, it is done:razz:

yeap, it completely worked!! Thanks a lot guy, you're the man!!


You don't have to say sorry, in fact, I am Chinese:razz:

Good luck!!!!! COOL!!!

P.S: any idea on making it work with firefox?
healychan
January 12th, 2006, 07:50 PM
P.S: any idea on making it work with firefox?
Sorry for the late reply, you may solve the problem already.
I couldn't remember what I did to install the plugin for firefox.
You can try to create some links in firefox plugin directory which point to the files in the jre directory.