65644341
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65644341's post in How to hide a text field was marked as the answer
Do you install the iReport?
if yes,you can see the property "print when expression" in the property panel.
eg.you've got 2 text fields fieldA and fileldB.If you want to display the A only if the fieldB is not empty.
The print when expression in the Text A could be :F{filedB}!=null &&!"".equals(F{fieldB})