choose statement : choose « XSLT stylesheet « XML Tutorial

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2. XSLT stylesheet
3. choose

File: Data.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<america>
 <source>
  <title>F</title>
  <url>http://www.java2s.com</url>
  <populations estimate="true" year="2002"/>
 </source>
 <nation>
  <name>USA</name>
  <capital>DC</capital>
  <population>32277942</population>
  <cc>dz</cc>
 </nation>
</america>

File: Transform.xslt

<?xml version="1.0" encoding="US-ASCII"?>
<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text" />

  <xsl:template match="america">
    <xsl:apply-templates select="nation" />
  </xsl:template>

  <xsl:template match="nation">
    <xsl:choose>
      <xsl:when test="population > 10000000">
        <xsl:value-of select="name" />
        <xsl:text>&#10;</xsl:text>
      </xsl:when>
    </xsl:choose>
  </xsl:template>

</xsl:stylesheet>

Output:

USA