Displaying textField when not null

[sjlevine]

I have a text field with a yellow background and red font that I would like not to display when it is null.  By not displaying, I mean that I don't want the yellow background to display:

The XML for this field is attached:

sjl

 

 

Code:

<textField>    <reportElement mode="Opaque" x="148" y="14" width="507" height="24" forecolor="#F00000" backcolor="#F8F800"/>    <textElement textAlignment="Center">     <font size="14"/>    </textElement>    <textFieldExpression class="java.lang.String"><![CDATA[$F{NODIFFMESS}]]></textFieldExpression> </textField>

[englbrechtful]

I guess by saying you dont want to display your text field when its null, you mean there should be _NO_ textfield in cases of null.

 

Try this :

 

$F{NODIFFMESS} == null ? : $F{NODIFFMESS}

[iancr01]

You may also use the Print When Expression for your text field.

[sjlevine]

What would be the syntax of the Print When Expression when used for this purpose? It is not clear from the JasperReports Ultimate Guide.

 

sjl

[mdahlman]

Your 'Print when' expression should be like this:

new Boolean($F{NODIFFMESS} == null)

[VimMang]

Requirement: Text message should be display in Table like "No Data found" if data is not returned. How can I achieve this? Thanks in Advance.

[rprachi2]

use coalesce or case like coalesce(field_name,'No Data found') or "case when field_name is null then 'No Data found' else field_name end"