Java ME Installation troubleshooting
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Java Version
Some SDK release notes mention Java 5, but the latest version of Java 6 should be good. The emulators need a 32bit Java even when running on a 64bit system.
There can be different java versions, 32 bit and 64 bit, on the computer. To control which java version to use, there is plain a plain text file called "java" in the bin directory of the SDK. This contains the path to the jdk to use. (Sun Emulator and Series 40 Emulator, S60 emulator seem to be different, but how?) In S60 SDK, there is an config item that seem to controls the allowed java versions. the file is
<installation_path>\Epoc32\tools\ecmt\config\config.properties epdt.java.version.start=1.4.1,1.4.2,1.5,5.0,1.6,6.0
The line needs to contain 1.6,6.0 so that Java 6 is recognized as allowed java version.
On 64 bit systems, the emulator can complain about the missing dll msvcr71.dll . This is the Microsoft visual c runtime. An work around is to copy it from the 32-bit JRE into the bin directory of the SDK.
Vista and Windows 7 security conflicts
It seems that you need to run the installer with administrator rights. Also, when the installation runs with a different account then the user which then calls the emulator, it may happen that the emulator starts on screen of the account of the installer, and the user does not see it.
Where to look for error messages
The Sun JME SDK uses an app called "device-manager". This is also responsible to register and communicate with emulators. The log file is in
%USERPROFILE%/javame-sdk/3.0/work/log/device-manager.log
The JME-SDK emulator stores logs in
%USERPROFILE%/javame-sdk/3.0/work/(instance ID)/device.log
The Instance ID may be different on each start.
S60 based emulators stores log entries in file
%TEMP%\EpocWnd.out
Other Resources
J2ME SDK Team Blog: First aid when emulator doesn't start http://blogs.oracle.com/javamesdk/entry/first_aid_when_emulator_doesn
Issues with Realtek HD audion or Windows DEP on Vista A deal between S60 3rd emulator and Vista the 10 seconds fix
Facildelembrar - Emulator freezing
I had this problem for a couple of years in one of my computers and was only able to figure a way to solve it today.
Hope this helps.My emulator would not start no matter what, until I got all installation requirements right.
First, the emulator won't work with x64 java. You must install a x86 version of the jdk.
Second, make sure that the JAVA_HOME and JRE_HOME environment variables point to the x86 java folder.
Third, make sure that the bin folder of the x86 java installation is on the PATH environment variable.
Fourth, make sure that you can successfully execute this line from the command prompt: 'start rmiregistry'
This is a java tool inside the bin folder that is used by the emulator.
facildelembrar 07:20, 21 May 2012 (EEST)