Estou usando jasper-reports 4.5.0 e estou gerando os reports.My exigência é se o meu relatório tem apenas uma página, então ele não deve exibir a página 1 0f 1.Como posso fazer isso.Para exibir a página x de y Eu estou usando as linhas abaixo do código.

  <textField>
                <reportElement x="395" y="121" width="20" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="350" y="121" width="45" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA["PAGE"]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="415" y="121" width="25" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA["OF"]]></textFieldExpression>
            </textField>
            <textField evaluationTime="Report">
                <reportElement x="440" y="121" width="19" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
            </textField>

Este é o código modificado recentemente.

<variable name="NPAGES" class="java.lang.Integer" calculation="Highest">
        <variableExpression><![CDATA[$V{PAGE_NUMBER}]]></variableExpression>
        <initialValueExpression><![CDATA[$V{PAGE_NUMBER}]]></initialValueExpression>
    </variable>

<textField>
                <reportElement x="395" y="121" width="20" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[($V{NPAGES} > 1) ? $V{PAGE_NUMBER} : ""]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="350" y="121" width="45" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[($V{NPAGES} > 1) ? "PAGE" : ""]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="415" y="121" width="25" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[($V{NPAGES} > 1) ? "OF" : ""]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="440" y="121" width="19" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[($V{NPAGES} > 1) ? $V{NPAGES} : ""]]></textFieldExpression>
            </textField>