logic tags for "" and null check

[Raghuveer]

How to check below code for "" and not null checking using logic tags

below code doesn't work if there is no value in database column.

        <logic:empty property ="databaseColumn1">
        &nbsp;
        </logic:empty>


--------------------

String strTemp =null;
strTemp ="";

if(strTemp!=null && !"".equalsIgnoreCase(strTemp )){
------

--------
}


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