JSP Compilation Error at line 0

[nino2000]

hi, when i created JSP pages , i got several times (often) an error when Jdeveloper compile JSP page to java file: Error [0] ; expected
but, it wasn't a problem because the JSP worked.

now, I meet an error very hard to resolve, i obtain:
Error [0] 'try' without 'catch'
or Error [0] 'catch' without 'try'

Could someone explain to me this strange error?

 

[iza]

because your jsp is not correctly build
whatever you write in it, the main code should look like :
try {
//some code
}
catch(which error){
// some code
}

double check your code, you must be missing a } (or have an extra one !!)

 

[wushutwist]

To understand this error you have to remember that a jsp gets compiled down to a servlet. When it is being compiled the compiler throws in try-catch blocks to catch any exceptions and possibly redirect to an error page if one is specified. Therefore if you leave out a close bracket } it could cause some funky errors. The 'try' without 'catch' error is very common. The problem occurs since you code block will be ended by a } inserted by the compiler and cause the another compilation error elsewhere in the servlet code. This is what makes debugging jsps hard. Also note some servlet engines are better at identifing errors than others (WebLogic = good, Tomcat = bad). Wushutwist