How to perform XML Schema validation with dom\Writer.java provided in the Apache Xerces package?

You can perform XML Schema validation with the dom\Writer.java program provided in the Apache Xerces package as shown below.

Run the dom\Writer.java program with "-v -s" option to turn on XML Schema validation. If the input XML file does not meet the requirements of its Schema, you will see validation errors:

\fyicenter\xerces-2_11_0\samples>\fyicenter\jdk-1.8.0\bin\java 
   -cp .;..\xercesSamples.jar;..\xercesImpl.jar;..\xml-apis.jar 
   dom.Writer -v -s UserXsdError.xml
   
[Error] UserXsdError.xml:6:25: cvc-datatype-valid.1.2.1: 'ONE' is not a valid value for 'integer'.
[Error] UserXsdError.xml:6:25: cvc-type.3.1.3: The value 'ONE' of element 'fyi:ID' is not valid.
[Error] UserXsdError.xml:8:52: cvc-datatype-valid.1.2.1: '1970-01-01+00:01' is not a valid value for 'dateTime'.
[Error] UserXsdError.xml:8:52: cvc-type.3.1.3: The value '1970-01-01+00:01' of element 'fyi:BirthDate' is not valid.
<?xml version="1.0" encoding="UTF-8"?>
<fyi:User xmlns:fyi="http://fyicenter.com" xmlns:xsi="http://www.w3.org/2001/XML
Schema-instance" xsi:schemaLocation="http://fyicenter.com User.xsd">
    <fyi:ID>ONE</fyi:ID>
    <fyi:Name>Frank Y. Ivy</fyi:Name>
    <fyi:BirthDate>1970-01-01+00:01</fyi:BirthDate>
    <fyi:Sex>Male</fyi:Sex>
</fyi:User>

The XML file used in the above test is, UserXsdError.xml:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!-- Copyright (c) 2017 FYIcenter.com -->
<fyi:User xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:fyi="http://fyicenter.com"
  xsi:schemaLocation="http://fyicenter.com User.xsd">
    <fyi:ID>ONE</fyi:ID>
    <fyi:Name>Frank Y. Ivy</fyi:Name>
    <fyi:BirthDate>1970-01-01+00:01</fyi:BirthDate>
    <fyi:Sex>  Male</fyi:Sex>
</fyi:User>

The XML Schema file used in the above test is, User.xsd:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!-- Copyright (c) 2017 FYIcenter.com -->
<xsd:schema
   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
   xmlns:fyi="http://fyicenter.com"
   targetNamespace="http://fyicenter.com"
   elementFormDefault="qualified">

  <xsd:element name="User">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="ID" type="xsd:integer"/>
        <xsd:element name="Name" type="xsd:string"/>
        <xsd:element name="BirthDate" type="xsd:dateTime"/>
        <xsd:element name="Sex" type="fyi:sexType"/>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>

  <xsd:simpleType name="sexType">
    <xsd:restriction base="xsd:NMTOKEN">
      <xsd:enumeration value="Male"/>
      <xsd:enumeration value="Femal"/>
    </xsd:restriction>
  </xsd:simpleType>
</xsd:schema>

⇒ dom\GetElementsByTagName.java - Apache Xerves DOM Sample

⇐ XML DTD Validaiton with dom\Writer.java

⇑ Using Apache Xerces DOM Sample Programs

⇑⇑ FAQ for Apache Xerces XML Parser