JasperReports: Not support & sign when i use style - jasper-reports

Question

Working in JasperReports:
<style pdfFontName="Helvetica-BoldOblique" isBold="true" isItalic="true"
forecolor="red">Instruction and instruction</style>
Not Working in JasperReports:
<style pdfFontName="Helvetica-BoldOblique" isBold="true" isItalic="true"
forecolor="red">Instruction & instruction</style>
Why this is happening?

Answer 1

I have used
&
instead of "&" and it is working in jasper report.
<style pdfFontName="Helvetica-BoldOblique" isBold="true" isItalic="true"
forecolor="red">Instruction &amp; instruction</style>
//In text filed i have used style tag.
<textField isStretchWithOverflow="true" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None" hyperlinkTarget="Self" >
<reportElement
x="0"
y="0"
width="290"
height="15"
key="textField"
isRemoveLineWhenBlank="true"/>
<box topBorder="None" topBorderColor="#000000" leftBorder="None" leftBorderColor="#000000" rightBorder="None" rightBorderColor="#000000" rightPadding="5" bottomBorder="None" bottomBorderColor="#000000"/>
<textElement textAlignment="Center" isStyledText="true">
<font size="9"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[<style pdfFontName="Helvetica-BoldOblique" isBold="true" isItalic="true"
forecolor="red">Instruction &amp; instruction</style>]]></textFieldExpression>
</textField>

Answer 2

Try to use & instead of using & symbol.
The working sample:
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ... whenNoDataType="AllSectionsNoDetail">
<style name="style1" forecolor="#FF0000" fontName="Serif" isBold="true" isItalic="true"/>
<title>
<band height="182" splitType="Stretch">
<staticText>
<reportElement style="style1" x="27" y="15" width="515" height="20"/>
<textElement/>
<text><![CDATA[Instruction and instruction]]></text>
</staticText>
<staticText>
<reportElement style="style1" x="27" y="46" width="515" height="20"/>
<textElement/>
<text><![CDATA[Instruction & instruction]]></text>
</staticText>
<staticText>
<reportElement x="27" y="78" width="515" height="20"/>
<textElement markup="styled"/>
<text><![CDATA[<style isBold='true'>Instruction and instruction</style>]]></text>
</staticText>
<staticText>
<reportElement x="27" y="108" width="515" height="20"/>
<textElement markup="styled"/>
<text><![CDATA[<style isBold='true'>Instruction & instruction</style>]]></text>
</staticText>
</band>
</title>
</jasperReport>
Note: The styled markup is using in this sample.
The result will be:
For more details you can view Creating Styled Text Using a Markup Language post and my answer on Style a text field in JasperReports question.