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Web Component Certification (OCEJWCD)

Why this EL code part is not working

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posted 15 years ago

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I have added a function named getAllBrands()to the BeerExpert class of HFSJ Book to check the EL [].But its not working why?

scriplets is working without any problem for tha ArrayList.

The codes are below
form.html

BeerExpert.java

SelectBeer.java

result.jsp

Can anyone can find out the problem?

SCJP 5.0 SCWCD 1.4 Preparing for SCEA. "I prefer an interesting vice to a virtue that bores."

Sreeraj G Harilal

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posted 15 years ago

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If i put
 ${styles[0]}
 ${styles[1]} int result.jsp

its works without any problem.

Can anyone can find out the problem?

SCJP 5.0 SCWCD 1.4 Preparing for SCEA. "I prefer an interesting vice to a virtue that bores."

Sayak Banerjee

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posted 15 years ago

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I'm sorry but I fail to understand one thing....why do ya have <String> associated with List and ArrayList in the BeerExpert class?

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Sreeraj G Harilal

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posted 15 years ago

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That is Generic version of Collections.That's in Java 5.
I am using java5 compiler. If am not using Generic Collections my i have to specify $javac -Xlint:unchecked <filename> for compilation.

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Sayak Banerjee

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posted 15 years ago

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If ya consider an EL like ${firstThing.secondThing} or
${firstThing["secondThing"]} firstThing has to be an attribute or an EL implicit object....when you're using ${styles[0]} its workin' fine because "styles" is a request attribute....but ${brands[0]} won't work because "brands" is neither an EL implicit object nor an attribute in any of the 4 scopes....
Hope that answers your question

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Sreeraj G Harilal

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posted 15 years ago

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Thank you Sayak, i got the answer.
I change the code so its working now

${be.allBrands[0]}
 ${be.allBrands[1]}
 ${be.allBrands[2]}
 ${be.allBrands[3]}

SCJP 5.0 SCWCD 1.4 Preparing for SCEA. "I prefer an interesting vice to a virtue that bores."

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