conditional statement to change fore color

[askme]

Hi all,

            I am using a conditional statement to change the font color in jrxml. The condition is if the value is greater than 0 then one color else another color.

Please find the statement that i used in the jrxml file in the code section below.

The field is of type string

    <field name="total" class="java.lang.String"/>

 

I get the following error when i try to generate the report

 

 

net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:
1. The method doubleValue() is undefined for the type String
                value = (java.lang.String)(((java.lang.String)field_total.getValue()).doubleValue() >0.0 ? //$JR_EXPR_ID=16$
                                                                                            <--------->
2. The method doubleValue() is undefined for the type String
                value = (java.lang.String)(((java.lang.String)field_total.getOldValue()).doubleValue() >0.0 ? //$JR_EXPR_ID=16$
                                                                                               <--------->
3. The method doubleValue() is undefined for the type String
                value = (java.lang.String)(((java.lang.String)field_total.getValue()).doubleValue() >0.0 ? //$JR_EXPR_ID=16$
                                                                                            <--------->

 

Thanks

Code:

<textField >				<reportElement x="607" y="0" width="70" height="20"/>				<textElement textAlignment="Center"/>				<textFieldExpression class="java.lang.String"><![CDATA[$F{total}.doubleValue() >0.0 ?    ("<style forecolor='#ff0000'>"+ $F{total}.toString()+"</style>"):    ("<style forecolor='#0000ff'>"+ $F{total}.toString()+"</style>")]]></textFieldExpression>			</textField>			

[teamireport]

looks like datatype that you defined for the field (total) as string and you condtional statement is expecting your field to be an integer.

so, could you  try changing the datatype of 'total' from string to integer /double.?