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XML to XSD to Java Generation Using JAXB and Trang

In this blog post I am going to explain how Java code can be generated from XML using xjc and Trang.

Trang is a Multi-format schema converter based on RELAX NG. You can download the latest version of Trang from here.

xjc stands for Java Architecture for XML Binding Compiler, JDK 1.6 comes with xjc compiler which can be found under <java_home>/bin as xjc.exe(for Windows).

Now, suppose I have a XML file called rules.xml as follows:
 <rule name="rule1" label="label1">
  <end-pattern include="true">.</end-pattern>
 <rule name="rule2" label="label2">

First we will generate a schema for rules.xml using trang. Execute the below command:
java -jar trang.jar rules.xml rules.xsd

This will generate an XSD named rules.xsd

<xs:schema xmlns:xs="" elementFormDefault="qualified">
  <xs:element name="rule-config">
        <xs:element maxOccurs="unbounded" ref="rule"/>
  <xs:element name="rule">
        <xs:element maxOccurs="unbounded" ref="match"/>
          <xs:element ref="start-pattern"/>
          <xs:element maxOccurs="unbounded" ref="end-pattern"/>
      <xs:attribute name="label" use="required" type="xs:NCName"/>
      <xs:attribute name="name" use="required" type="xs:NCName"/>
  <xs:element name="match" type="xs:NCName"/>
  <xs:element name="start-pattern" type="xs:NMTOKEN"/>
  <xs:element name="end-pattern">
    <xs:complexType mixed="true">
      <xs:attribute name="include" type="xs:boolean"/>

Now, we will generate Java code from this XSD using xjc.exe. Run the below command:
xjc.exe -p com.sample.config rules.xsd

This will generate the following Java classes:

Now you have all the classes needed for unmarshalling the xml file!

JAXBContext jc = JAXBContext.newInstance("com.sample.config");
Unmarshaller u = jc.createUnmarshaller();
RuleConfig ruleConfig = (RuleConfig)u.unmarshal(
   new FileInputStream("rules.xml"));

Simple, isn't it?



Induction Cooker Showing an Error Code? Induction Cooker Error Codes Explained

Are you searching for Induction Cook-top error codes? Here you can find the error codes of all popular induction cooktops and how to troubleshoot it.

These are for your reference only, do not try to open your cooktop without proper safety measures, we advise you to call the service person if any servicing is needed.

If you want to know how Induction Cook-top works, read our previous article titled What is Induction Cooker? How Induction Cooker Works?.

Whirlpool Induction Cooker Error CodesError CodeErrorSolutionF0An internal error was detected.Disconnect power. Wait 5 seconds before reconnecting power. If the symbol appears again, call for service.F2The surface cooking area is too hot and has turned off.Remove the pans from the surface cooking area. "F2" will disappear when the surface cooking area has cooled. If you turn the surface cooking area back on and "F2" reappears, the cooktop is still too hot. Turn off the surface cooking area and allow it to cool.F4The po…

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Disclaimer: This is an independent review on some of the most popular travel websites, I am not associated with any of these travel websites nor their promoters. If you do not agree with any of the comparisons made here, post your concerns as a comment so that the same will be reviewed and the content under question will removed from this blog.

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