Assert enable in jdeveloper

JDK 1.4 and the Assert Keyword (2394626,2394613)
The parser and the code editor do not know about the 'assert' keyword yet. The workaround to enable JDK 1.4 assert keyword support
in the code editor is to uncomment the following line in the $(JDEV_INSTALL_DIR)\jdev\bin\jdev.conf file, and restart JDeveloper:

AddVMOption -DEDITOR_ENABLE_ASSERT=true

Or
go to weblogic bin folder and edit setDomainEnv.bat file
and search
'set JAVA_OPTIONS=%JAVA_OPTIONS% %enableHotswapFlag% -da'
then change it to

'set JAVA_OPTIONS=%JAVA_OPTIONS% %enableHotswapFlag% -ea'
if you want to change default server then you will find bin folder in
system11.1.1.1.33.54.07\DefaultDomain\