java – Change Tomcat's Charset.defaultCharset in windows-ThrowExceptions

Exception or error:

I’m using tomcat 6.0.32 in windows 7.
Inside a very simple servlet, inside the init method, I’m printing:


The output is:


As far as I understand this is how tomcat start’s in the JVM since I’m printing the same in standalone java class and I get “UTF8” as a response.

So, how can I change this to UTF-8?


How to solve:

Just create a setenv.bat file inside the TOMCAT/bin directory with the following contents:

set "JAVA_OPTS=%JAVA_OPTS% -Dfile.encoding=UTF8"


You may also add this setting in the Tomcat 7.0 windows service manager.


from Dr James Bayley’s blog


For Tomcat running as a Windows service neither %JAVA_OPTS% and neither setenv.bat answers works in my case.

I set the option “-Dfile.encoding=UTF8” in registry:

“HKEY_LOCAL_MACHINE\SOFTWARE\Apache Software Foundation\Procrun 2.0\tomcatstackTomcat\Parameters\Java –> Options*

Then it works.


Try setting the (Windows) environment variable JAVA_TOOL_OPTIONS to -Dfile.encoding=UTF-8 and start the Tomcat Server.

Will get more idea from this link:
Setting the default Java character encoding

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