Java Tag Library for compairing two objects via the equals method.

Question

In my JSP I'm required to compare to Objects to see if they are equal or not using the Object's equals method.

Is there a way to do this using the JSTL or another Tag Library?

(I am not allowed to use Scriptlets due to team rules.)

I tried to use the JSTL tag, but it only seems to use the == operator.

Any suggestions are appreciated.

Thank you for your time.

Answer 1

The J2EE 1.4 guide has an example of just that. You'll have to setup your once function lib, but it doesn't look hard.

Answer 2

The JSP Expression Language operator == (or its alias, eq) performs comparison with the equals method, although some coercions are performed if one of the objects is a special type (BigDecimal, BigInteger, Double, Float, Long, Integer, Short, Byte, Character, Boolean, or String). You shouldn't need a tag for this, just ${a == b}. If that doesn't fit in your context, could you please post more information?