View source for ArcEngine/Java issue

ArcEngine 10.1 needs Java to be installed and ArcEgine finds Java by '''registry keys''' (not by environmental variables like JAVA_HOME and PATH).

When ArcEngine does not find Java properly there are two different error messages in the console log '''after''' ''Synchronized with "xxx" Map''

<ol><li>Java Executable
Loading jawt.dll failed. This is normal if java.version < 1.3. If java.version is > 1.4 and if this failure has occurred on Windows,<br/>
please ensure that this program is started with a Java executable from a JDK/JRE install location on this computer. <br/>
at '''com.esri.arcgis.interop'''.NativeObjRef.getJdk13WindowsHandleNative(Native Method) </li>
<li>Java HotSpot</li></ol>

==How to fix Java issues for ArcEngine==__NOEDITSECTION__ 
{{Note | You need to stop {{IMSMANG}} server and the IMSMA Control Centre between each change below since {{IMSMANG}} reads in the environment variables when the IMSMA Control centre is started. Open the log and verify that your changes have taken effect.}}

<ol>
<li>Check in the ''Programs and Features'' in the Control Panel if the Java installed is the Java that is included in the {{IMSMANG}} installation package.
:If not, ask the user if you may uninstall the other version.</li>
[[Image:Java version.png|700px|center]]
<div align="center">
'' Our Java ''
</div>
<li>If our Java already was installed check that the right version is found by Java; <br/> <br/>
[[Image:Java ver.png|600px|center]]
* find the Java version by typing ''Java -version'' in the Command window and click Enter.
* '''[[Environment Variables | Verify that the environment variable]]''' JAVA_HOME is set to ''C:\Program Files\Java\jre7'' on 32-bits OS or ''C:\Program Files (x86)\Java\jre7'' on 64-bits OS.</li>
<li>If none of the above fixed the problem, add ''''';'''%JAVA_HOME%\bin'' to the end of the PATH environment variable.
<li>If it still does not work, copy the contents of the environment variable PATH to a document.</li>
<li>Copy ''%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%JAVA_HOME%\bin'' to the environment variable PATH.
:In this way you know that the PATH is correct and does not have any other issues.</li>
<li>Test again.</li>
<li>If it works, restore the PATH variable by copy back part by part back to it with ; between each part.
:'''Note''': test to start the client between each change of the PATH.</ol>

===Example log file from English stand-alone server===__NOEDITSECTION__ 
System Property '''"user.language"''': en <br/>
System Property '''"user.language.format"''': not set<br/>
System Variable '''"AGSENGINEJAVA"''': C:\Program Files (x86)\ArcGIS\Engine10.1\<br/>
System Variable '''"Path"''': C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\; c:\Program Files (x86)\Java\jre7\bin<br/>
System Variable '''"Java_Home"''': c:\Program Files (x86)\Java\jre7<br/>
System Variable '''"LANG"''': not set<br/>
Client Configuration Variable '''"java.naming.provider.url"''': localhost<br/>
Client Configuration Variable '''"AlwaysSyncGeodata"''': true<br/>
Client Configuration Variable '''"isClientOnly"''': false<br/>
Connecting to GIS Service ...
Starting session with '''GIS Service''' at "/C:/IMSMAng//server/gis" ...
GIS Service starting ...<br/>
'''fileServerURI''' = file:/C:/IMSMAng/server/gis/<br/>
'''map.name''' = World<br/>
Building Map Configuration ...<br/>
'''Connected''' to GIS Service<br/>
Synchronizing with "World" Map cached in "C:\IMSMAng\client\gis\sandbox\World" ...<br/>
'''Synchronized''' with "World" Map<br/>

{{Note| There is another '''[[Java error during installation | Java error]]''' that has occurred during {{IMSMANG}} installaion.}}
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[[Category:NAA]]