New to java, having trouble with Installing JDK on Ubuntu

Hello, everyone???
I'm try to install j2se jdk-1_5_0_15-linux-i586-rpm.bin on my Ubuntu Linux 7.10, I ran the self-extract file and everything just seemed fine. But when I get to setting the system environment variable , something must have gone wrong. I have read from books which say that I should set 'CLASSPATH=.:/usr/java/jdk1.5.0_15/lib/dt.jar:/usr/java/jdk1.5.0_15/lib/tools.jar'. But I can't find a 'tools.jar' file in the 'lib' directory. There is a 'tools.pack' instead of it.
When I try to test the installation with: 'javac --version', I got :
Error occurred during initialization of VM
java/lang/NoClassDefFoundError: java/lang/Object
I don't know why. Do anybody can help me with this problem?

I used the Synaptic version of Java. I don't like where it puts the JDK in a protected folder. I want development stuff in my home folder. The Sun download with the NetBeans is the best, IMHO. You put your install where you want it. NetBeans then slams the pathname with every javac and java you run. Works great for development. Then, becomes the FireFox problem -- the java plug-in. Because I'm AMD-64 I have to use the IceTea java plug-in.
Would Sun please, please write the 64-bit plug-in?
The last irritating problem you will have is running java from a Terminal. That takes internal links in your File System. You can do what NetBeans does: java -classpath=~home/desktop/jdk1.6.1/bin/myPrograms myProgram. Or, you can make SymLinks. I keep a bookmark to this topic from the Ubuntu Forums:
[Custom Install JDK java|http://ubuntuforums.org/showthread.php?t=319138]

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Hello,
I am having trouble installing updates. I checked the windowsupdate.log file and I see:
2015-03-13
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680         Agent
* Criteria = "(DeploymentAction=* AND Type='Software') OR (DeploymentAction=* AND Type='Driver')"
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Here is what I see in the logs. Can you please take a look and see if anything stands out? There are a lot of errors/failures/warnings in the
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<looks good>Scanagent.log = No errors/fail/warnings
<![LOG[ScanJob({70E7DB5B-44CF-4BC0-B73F-B89A9AB557BF}): CScanJob::OnScanComplete - Scan completed successfully, ScanType=1]LOG]!><time="23:48:18.177+300" date="03-02-2015" component="ScanAgent"
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WUAHandler.log =
<![LOG[Unable to read existing resultant WUA policy. Error = 0x80070002.]LOG]!><time="05:57:24.588+300" date="02-26-2015" component="WUAHandler" context="" type="2"
thread="4148" file="sourcemanager.cpp:920">
<![LOG[Search Criteria is (DeploymentAction=* AND Type='Software') OR (DeploymentAction=* AND Type='Driver')]LOG]!><time="02:26:17.774+240" date="03-11-2015" component="WUAHandler"
context="" type="1" thread="4240" file="cwuahandler.cpp:2916">
<![LOG[Async searching of updates using WUAgent started.]LOG]!><time="02:26:17.774+240" date="03-11-2015" component="WUAHandler" context="" type="1" thread="4240"
file="cwuahandler.cpp:579">
<![LOG[Async searching completed.]LOG]!><time="02:26:24.339+240" date="03-11-2015" component="WUAHandler" context="" type="1" thread="4048" file="cwuahandler.cpp:2068">
<![LOG[Successfully completed scan.]LOG]!><time="02:26:25.651+240" date="03-11-2015" component="WUAHandler" context="" type="1" thread="4240" file="cwuahandler.cpp:3557">
-------------------------------------------------------------------------------------------------------------------------WindowsUpdate.log
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05:55:59:437       956
1194       AU
WARNING: Failed to get Wu Exemption info from NLM, assuming not exempt, error = 0x80240037
2015-03-11
05:55:59:437       956
1194       AU
WARNING: Failed to get Network Cost info from NLM, assuming network is NOT metered, error = 0x80240037
2015-03-11
05:57:22:655       956
144c       EP
FATAL: EP: Failed to obtain element node, error = 0x80245002
2015-03-11
05:57:22:780       956
144c       EP
FATAL: Failed to obtain plugin interfaces using CLSID 7D5F3CBA-03DB-4BE5-B4B3-6DBED19A6833, error = 0x8024000E
2015-03-11
05:57:22:821       956
144c       Agent
WARNING: WU client failed Searching for update with error 0x8024000e
2015-03-11
05:55:59:296       956
1194       Agent
WARNING: SleepStudyTracker: Machine is non-AOAC. Sleep study tracker disabled.
2015-03-11
05:55:59:358       956
1194       Misc
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05:57:22:749       956
144c       Agent
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2015-03-11
05:57:22:811       956
144c       PT
WARNING: PTError: 0x8024000e
2015-03-11
05:57:22:811       956
144c       PT
WARNING: Initialization failed for Protocol Talker Context: 0x8024000e
2015-03-11
05:57:22:811       956
144c       Agent
* WARNING: Exit code = 0x8024000E
2015-03-11
06:21:56:594       968
e8c         Report
WARNING: CSerializationHelper:: InitSerialize failed : 0x80070002
2015-03-16
04:14:17:850       968
1660       EP
FATAL: Failed to obtain 9482F4B4-E343-43B6-B170-9A65BC822C77 redir SecondaryServiceAuth URL, error = 0x80245002
2015-03-16
04:14:17:850       968
1660       Agent
WARNING: Failed to obtain the authorization cab URL for service 855e8a7c-ecb4-4ca3-b045-1dfa50104289, hr=0
2015-03-11
05:57:23:321       956
17f8       Report
REPORT EVENT: {D462FFC9-CF2C-4EB8-91DC-4EB946A903A1}
2015-03-11 05:57:22:811-0400     1
148 [AGENT_DETECTION_FAILED]
101         {00000000-0000-0000-0000-000000000000}
0
8024000e
AutomaticUpdates
Failure Software Synchronization
Windows Update Client failed to detect with error 0x8024000e.
<as seen earlier in the logs>2015-03-11
02:26:24:027       956
1274       Report
REPORT EVENT: {F5A3CD05-8B66-4806-BAF7-48AD2E8012E8}
2015-03-11 02:26:24:027-0400     1
147 [AGENT_DETECTION_FINISHED]
101         {00000000-0000-0000-0000-000000000000}
0
0
CcmExec
Success
Software Synchronization
Windows Update Client successfully detected 40 updates.
2015-03-18
06:40:25:397       968
5fc          AU
## START ## AU: Install updates
2015-03-18
06:40:25:397       968
5fc          AU
2015-03-18
06:40:25:397       968
5fc          AU
# Initiating scheduled install
2015-03-18
06:40:25:428       968
5fc          AU
WARNING: There are no approved updates to install

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If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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