Javax.xml.parsers.SAXParser.getSchema() Method

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Description

The Javax.xml.parsers.SAXParser.getSchema() method gets a reference to the the Schema being used by the XML processor. If no schema is being used, null is returned.

Declaration

Following is the declaration for Javax.xml.parsers.SAXParser.getSchema() method

public Schema getSchema()

Parameters

NA

Return Value

This method returns the Schema being used or null if none in use

Exception

UnsupportedOperationException − When implementation does not override this method

Example

The schema set in this example is a file called Student.xsd and is in our CLASSPATH. The contents of this file are the following −

<?xml version = "1.0" encoding = "utf-8"?>
<xs:schema attributeFormDefault = "unqualified" elementFormDefault = "qualified" 
xmlns:xs = "http://www.w3.org/2001/XMLSchema">
   <xs:element name = "student">
      <xs:complexType>
         <xs:sequence>
            <xs:element name = "age" type = "xs:unsignedByte" />
            <xs:element name = "name" type = "xs:string" />
         </xs:sequence>
         <xs:attribute name="id" type="xs:unsignedByte" use = "required" />
      </xs:complexType>
   </xs:element>
</xs:schema>

The following example shows the usage of Javax.xml.parsers.SAXParser.getSchema() method.

package com.tutorialspoint;

import java.io.File;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import static javax.xml.XMLConstants.*;

public class SaxParserDemo {

   public static void main(String[] args) {

      // create a new SAXParserFactory
      SAXParserFactory factory = SAXParserFactory.newInstance();

      // create a new schema factory
      SchemaFactory schemaFactory =
         SchemaFactory.newInstance(W3C_XML_SCHEMA_NS_URI);

      // a file that points to our schema
      File file = new File("Student.xsd");

      try {
         // create a new schema
         Schema schema = schemaFactory.newSchema(file);

         // set our schema for our parser
         factory.setSchema(schema);

         // get a new SAXParser
         SAXParser parser = factory.newSAXParser();

         // get the schema
         System.out.println("" + parser.getSchema());

      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
}

If we compile the code and execute it, this will produce the following result −

com.sun.org.apache.xerces.internal.jaxp.validation.SimpleXMLSchema@4447393f