Installing JDK after upgrading JRE several times - WIndows XP

I am not certain if this is the correct forum for posting JDK installation questions (for Windows XP)? If not, please direct me to the correct one.
I would like to install the JDK for the very first time but I noticed that I have at least two versions of the JRE and a few updates for both. Should I uninstall both JRE's and their updates before installing the latest JDK OR do I merely overinstall?
I have the following:
J2SE Runtime 5.0 Update 10
J2SE Runtime 5.0 Update 11
Java 2 Runtime, SE v1.4.2_01
Java 6 Update 20
Java SE Runtime 6 Update 1
Not sure what the difference between J2SE and Java 6 and whether or not I need both to run applications.
Thanks in advance for clearing up my confusion.

user13707424 wrote:
I am not certain if this is the correct forum for posting JDK installation questions (for Windows XP)? If not, please direct me to the correct one.Well you want to install a JDK thus you must have development purposes. So yes, this would be the correct forum. You do eventually want to do programming, right?
>
I would like to install the JDK for the very first time but I noticed that I have at least two versions of the JRE and a few updates for both. Should I uninstall both JRE's and their updates before installing the latest JDK OR do I merely overinstall?For the sake of making your life as easy as possible I would uninstall what is already there and install a clean JDK + JRE (the latest version of course). You only need one instance of Java to rule them all.
Not sure what the difference between J2SE and Java 6 and whether or not I need both to run applications.
Well I would make your next step finding that out. I suggest you start your adventures here: http://download.oracle.com/javase/tutorial/

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Crystal Reports ClickOnce install fails after upgrade to run time 13.0.2

I realize this is very similar to two other posts but the ClickOnce failure was not addresses in the two threads I found.
Visual Studio 2010 V 10.0.40219.1 SP1Rel
.NET Framework V 4.0.30319 SP1Rel
Crystal Reports for .NET Framework 4.0 BuildVersion=13.0.2.469.Cortez_CR4VS (from ProductId.txt in the download folder)
Application was original developed using CR BuildVersion=13.0.1.220.Cortez_CR4VS
So since I upgraded this week, if a user clicks the Launch link on the deployment web page the application loads the appl;ication update and starts. Does not even check with Crystal Reports but everything seems to work.
The new version of the Crystal Reports runtime tries to install for users I have that enjoy clicking the run button. The install fails and points at a log file, the key part of which is
Installing using command 'C:\WINDOWS\system32\msiexec.exe' and parameters ' -I "C:\DOCUME1\clyle\LOCALS1\Temp\VSDC8.tmp\Crystal Reports for .NET Framework 4.0\CRRuntime_32bit_13_0_2.msi" -q '
Process exited with code 1603
Status of package 'SAP Crystal Reports Runtime Engine for .NET Framework 4.0' after install is 'InstallFailed'
Uninstalling the previous version manually alleviates the failure as does manually running the msi on the target machine. But that kind of defeats the purpose of ClickOnce. Looking at product.xml that accompanies the runtime download I see it tests for the 13.0.2 version and bypasses the install if it finds it but it does not check for earlier versions.
Another thread I read indicated changing the switches in the install command would work but I am not clear on how to do that from ClickOnce, I cannot locate where the command is being given. Is there a way to get it to test for previous versions and delete them or force an overwrite using the ClickOnce?

Ludek,
Did this issue above every get resolved?
Here is what I have:
ClickOnce, Windows form app that uses Crystal. I upgraded to VS 2012 and Crystal right along
with it.
I only want the 32bit version to install, even on 64bit
machines. I have modified the
product.xml file to allow for this. Also
have some machines with version 13.0.0 and 13.0.1 of the Crystal ClickOnce msi
file. Would like to get everyone up to
13.0.6.
I am doing ALL this testing on clean VMWare installs.
Windows 7 x64 and Windows XP x86.
I force the 32bit install in the product file. (This I believe
is working correctly) And I do a version check, this is where the problem comes
in… Below, from the product file:
<InstallChecks>
    <RegistryCheck
Property="CRRuntime32Version" Key="HKLM\SOFTWARE\SAP
BusinessObjects\Crystal Reports for .NET Framework 4.0\Crystal Reports"
Value="CRRuntime32Version" />
</InstallChecks>
Note to path in the registry. This path which is installed
by CR is different for Win7 vs WinXP, not sure why? In Win7 the path is:
HKLM\SOFTWARE\Wow6432Node\SAP
BusinessObjects\Crystal Reports for .NET Framework 4.0\Crystal Reports
Also if you have version 13.0.0 installed there is no entry
in the registry for the version number at all!
The log file also show that it can’t find the version if 13.0.0 is
installed.
Admittedly the error log shows that it is somehow finding
the version if it is 13.0.1 (nothing for 13.0.0)? But even though I have it set
to skip the 13.0.6 install if the version check is 13.0.1 or higher Crystal
attempts to install anyway, and it fails in the process, halting the entire
ClickOnce install.
In summary. I need to
be able to check the version currently installed and update it to 13.0.6. This fails and seems to be a bug?   Hopefully there is a work around.
Thanks,
Jim
The product.xml file I have modified is below for review.
<?xml version="1.0" encoding="utf-8" ?>
<Product
xmlns="http://schemas.microsoft.com/developer/2004/01/bootstrapper"
ProductCode="SAP.CrystalReports14.NET.2.0"
>

<PackageFiles>
    <PackageFile Name="CRRuntime_32bit_13_0_6.msi"
      HomeSite="http://downloads.businessobjects.com/akdlm/crnetruntime/clickonce/CRRuntime_32bit_13_0_6.msi"
      PublicKey="30818902818100cbc8f3d8b4bc4db86f150116f4ad7f2fd2d91d29ae6f752c2aa6489cbda10670a0b97b8840d03dd8d082bfb985882b1278504bdd15a1f2a00b629cd70bf26d94b3933a9647a12c819ca67acd1c32ac942e1b824aad4fd8e8a989c45cf4a13770fe2b233f598ea06b62081174be6b7701f347612c126d42c2f9b759ff00164eb30203010001"/>
</PackageFiles>
<RelatedProducts>
    <DependsOnProduct Code="Microsoft.Net.Framework.2.0" />
    <DependsOnProduct Code="Microsoft.Data.Access.Components.2.8" />
</RelatedProducts>
<InstallChecks>
    <RegistryCheck Property="CRRuntime32Version" Key="HKLM\SOFTWARE\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Crystal Reports" Value="CRRuntime32Version" />
</InstallChecks>
<Commands Reboot="Defer">
    <Command PackageFile="CRRuntime_32bit_13_0_6.msi"
      Arguments=''
      EstimatedInstalledBytes="50000000"
      EstimatedInstallSeconds="220">
      
      <InstallConditions>
        
        
        
        
        <BypassIf Property="CRRuntime32Version" Compare="VersionGreaterThanOrEqualTo" Value="13.0.1"/>
        
        <FailIf Property="AdminUser" Compare="ValueEqualTo" Value="false" String="AdminRequired"/>
        
        <FailIf Property="Version9x" Compare="VersionLessThan" Value="4.10" String="InvalidPlatformWin9x"/>
        
        <FailIf Property="VersionNT" Compare="VersionLessThan" Value="5.00" String="InvalidPlatformWinNT"/>
      </InstallConditions>
      <ExitCodes>
        <ExitCode Value="0" Result="Success"/>
        <ExitCode Value="1641" Result="SuccessReboot"/>
        <ExitCode Value="3010" Result="SuccessReboot"/>
        <DefaultExitCode Result="Fail" FormatMessageFromSystem="true" String="GeneralFailure" />
      </ExitCodes>
    </Command>
</Commands>
</Product>

After closing large documents (drawings) the window closes but the process runs still in the background. I open the next document, the same procedure and after dowing this several times the RAM is full the system becoms very slow. what can i do???

after closing large documents (drawings) the window closes but the process runs still in the background. I open the next document, the same procedure and after dowing this several times the RAM is full the system becoms very slow. what can i do???

You can always shut it down manually via the Task Manager
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sberman wrote:
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