Question

I would like to have a pair of TextFields depending on a value. And the “y”-value should be adjusted depending on the empty space.

When the value is "0" I would like to hide the TextField.

I.e. I would like to hide the staticText and the textField if the parameter red is equal to "0" and have the blue values moved up, in the jrxml-code below:

  <staticText>
    <reportElement x="100" y="30" width="100" height="30"/>
    <text><![CDATA[Red items:]]></text>
  </staticText>
  <textField>
    <reportElement x="200" y="30" width="40" height="30"/>
    <textFieldExpression>
      <![CDATA[$P{red}]]>
    </textFieldExpression>
  </textField>

  <staticText>
    <reportElement x="100" y="60" width="100" height="30"/>
    <text><![CDATA[Blue items:]]></text>
  </staticText>
  <textField>
    <reportElement x="200" y="60" width="40" height="30"/>
    <textFieldExpression>
      <![CDATA[$P{blue}]]>
    </textFieldExpression>
  </textField>

Example of output:

//if blue = 3 and red = 2    if blue = 3 and red = 0    if blue = 0 and red = 2
    Red items: 2               Blue items: 3              Red items: 2
    Blue items: 3    

These TextFields will be placed at the end of my report. How can I do this?

Answer 1

<reportElement ...>
    <printWhenExpression><![CDATA[$P{red} == 0]]></printWhenExpression>
</reportElement>

You can use iReport to modify this with a pleasant UI.