GNU JSP is GNU implemented JSP engine. We provided it as our JSP engine. By default, GNU JSP uses SUN JDK’s built-in java compiler. But if the built-in java compiler is unavailable or users are dissatisfied with the built-in compiler, they can use another java compiler with option compiler. compiler= -classpath %classpath%:%scratchdir% -d %scratchdir% -deprecation %source% where the colon between %classpath% and %scratchdir% is replaced with the platform dependent path separator (: on Unix, ; on Windows). For example, if the user uses Microsoft jvc.exe compiler=”C:\\Program Files\\DevStudio\\SharedIDE\\bin\\jvc.exe” -g -nowarn -nologo -cp c:\\JREntServer\\lib\\JRESServlets.zip; c:\\JREntServer\\lib\\JREntServer.zip ;c:\\JREntServer\\lib\\JREngine.zip; c:\\JREntServer\\lib\\servlet.jar;c:\\JR EntServer\\lib\\mail.jar; c:\\JREntServer\\lib\\activation.jar; c:\\JREntServe r\\lib\\gnujsp10.jar; c:\\JREntServer\\lib\\servlet-2.0-plus.jar; c:\\JREntSer ver\\lib\\unicode.zip;