JSP Compiler error

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posted 20 years ago

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When I run this on Tomcat 5.0 I get the following compiler error:

If I add curlies around the if and else clauses it works:

Is there something in the spec that I've missed or is this a problem with Tomcat 5?

Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction. - Ernst F. Schumacher

Paul Yen

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posted 20 years ago

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Hi Michael,
In SCWCD Exam Study Kit, it mentions that if you omit the braces might cause an error at compile time or an undesired behavior at runtime.

SCJP 1.4, SCWCD, SCBCD,<br />SCDJWS (preparing)

Venkatesh Subramanian

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posted 20 years ago

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Hi Michael,
Your JSP code may have only one line of code after the 'if'. But when it gets translated into a servlet, the single line of jsp code may represented by more lines. In your case, the translated code may look like:
if (str.equals(""))
jspWriter.print("\n"); //<BR>
jspWriter.print("str is empty"); //str is empty
else
jspWriter.print("\n"); //<BR>
jspWriter.print("str ="); //str =
jspWriter.print(str); //<%= str %>
Thanks,
Venkatesh.
SCJP 1.4

Michael Morris

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posted 20 years ago

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Thanks Venkatesh,
That makes sense. You know I always bracket my ifs anyway in pure Java code, I was just being lazy this time and it bit me.

Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction. - Ernst F. Schumacher