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Xjc command for xsd to java

This can be achieved using JAXB binding compiler XJC command. Develop or obtain an XML schema file. xsd -b bindings1. Convert Xsd files In Java Classes from command line. Tree. http://jaxb. XJC is compiling these difference URIs to a the same classpath; specifically _1. The xjc utility is run on the schema to bind a schema to Java classes. The tool “xjc” is used to generate the annotated Java classes from the XSD schema. 7', 'com. The standard JDK command xjc will handily generate Java classes from a given xsd file: but if you want to specify information such as a super-class or Java perisitence for the generated classes, the following info should help. Follow the steps below to generate a set of Java source files from XML schema. I'm using JAXB and XJC for first time. xsd After running the command successfully , you will find all the classes generated automatically with correct package structure . xsd A2. xsd. These elements can be  Sep 30, 2018 If you have programs that use JAXB (Java Architecture for XML . It is distributed within the JDK package and is located at /bin/xjc path. Generate XSD from Java Class. Select JAXB Project and click Next. 7'  Dec 15, 2013 Generate Java class from XML Schema using Eclipse IDE Enter the project name as JavaFromXsd and make sure jre7 is selected as the Target runtime and JAXB version as 2. xsd” and copy the following lines. xsd extension. Also, you need the xjc utility, included in the JDK6 (or download the JAXB project files). Hello , I have an xsd which I am trying to parse using xsd , generate java classes and xml from it . 2. In order to do this, you should have a class representing your XML-Schema. xsd and then run the following command from the command line Today we will learn how to generate XSD from java classes. This can be invoked from command line as follows: schemagen [-options]. A new Java API called Java Architecture for XML Binding (JAXB) can make it easier to access XML documents from applications written in the Java programming language. In addition, JAXB includes a “schemagen” tool which can essentially perform the inverse of “xjc”, creating an XML Schema from a set of annotated classes. So to generate java classes from xsd schema using Gradle we have to write an an Ant Task. The xjc syntax below generates the Java source code from the company. Now copy com. xjc -d src 1. . xjb -b bindings2. xsd . Below is the xsd . We were trying to generate JAXB classes using gradle, xsd and xjc, and JAXB classes should have XmlRootElement annotations so it could be used to expose as web service reponse. December 28, 2015 java Shakti Yadav. xsd file. This is causing collision with the same classpath: xjc -d out -p com. schema1. What is surprising here is that JAXB has generated a property for each option in the choice structure. In Windows open Command Prompt or Terminal in Linux and go to student. 3/docs/xjcTask. Optionally, you can add jdk binaries to your path variable to simplify the usage of java built in binaries. In this example I have customer. come sicuramente ricorderete XJC è un tool che è già presente nella JDK, ( nella cartellina bin ), quindi non c'è bisogno… Introducing XJC. The most important are This example shows you how to generate Java Classes from XSD using jaxb2-maven-plugin. In this example, we will see how to generate XML schema from Java class using schemagen tool from command line. So how is it done. We do have an XSD. So there is no need for external tools and you should always have it at hand if required. [version  The XSD Builder Gradle plugin lets you generate Apache XMLBeans bindings from Adds XJC tool to your project for generating Java source code for XML  Nov 19, 2012 When generating Java classes from an XSD using the XJC tool, we sometimes need . Then you can generate the JAXB classes: in eclipse, for example, you can right-click on the project and run New>Other>JAXB>”JAXB Classes from a Schema”. This article is a quick reference page to use schemagen from both the command line and Maven. This plugin uses the XJC which is a JAXB Binding compiler tool that can generate Java Classes from XSD. You can generate fully annotated Java classes from an XML schema file by using the JAXB schema compiler, xjc command-line tool. By default, the xjc binding compiler generates the Java content classes in the current directory. This will generate an xsd file which will be used by xjc to convert it to classes. Let create the project structure like below. to your Java classes. Generate Java classes in Eclipse. 1) Add JAXB Annotations to Java Classes First step is to add annotations such as @XmlRootElement, @XmlAccessorType and @XmlElement etc. This reference page is part of a series of articles on JAXB: Traditionally we had to use the xjc schema compiler from command prompt or an ant build for generating java code from xsd. Jan 13, 2014 Instead I will focus on a little command line tool called xjc and show you how to generate your binding classes based on an existing XSD  May 14, 2012 In the previous examples provided here and here, we saw how to generate XML Schema from Java classes using 'schemagen' command line  Jun 27, 2019 Use Java Architecture for XML Binding (JAXB) xjc tooling to compile an XML schema file into fully annotated Java classes. JAXB2 Maven Plugin uses JAXB SchemaGenerator utility to generate XSD from java classes. At its core, JAXB uses the XmlAdapter<ValueType,BoundType> class to convert between the XML string and the Java class. And even better, xjc is part of the JDK. I'm doing a Java EE project REST implementation and we return a lot of XML. The standard JDK command xjc will handily generate Java classes from a given xsd file: …but if you want to specify information such as a super-class or Java perisitence for the generated classes, the following info should help. bat (Windows). I'm performing this command: xjc -d generated -p net. To see this example in action, following is the minimum requirement: JDK 6 (Java SE 6) or later; JAXB 2. The following example uses the Hyperjaxb3 plugin. xsd file location. Just type the following command in command prompt ( assuming you have the xsd file in same working directory ) xjc test. xsd schema3. In addition, the ordering of the schema files and binding files on the command line does not matter. secondly, I tried with jaxb , but its dealing with xml file not a xsd schema while marshell/unmarshelling. Required dependencies in Gradle’s build file. XJC is inbuilt for java version 6 and higher . The xjc tool generates Java source code from an XML Schema. Set the JAXB_HOME path to the folder in which you have extracted the content (e. To see all the options just type xjc in the console. Create a JAR containing the Java classes for use in other projects with a useful manifest. xsd on my local file system. Compile the source code into classes. Configure Maven to generate classes from XML Schema using JAXB In my previous post I showed how to create RESTful services using Spring Framework. xsd to create java objects. We are going to use MOXy JAXB implementation which is available as part of Eclipselink project. exe on the command line to generate the . Using third-party JAXB plugins to expand XJC command-line and  The JAXB specification defines a number of XML elements that customize how Java types are mapped to XML Schema constructs. xjc command for JAXB applications. Generating java files from XSD using Ant and JAXB Java Architecture for XML Binding (JAXB) provides a fast and convenient way to bind XML schemas and Java representations, making it easy for Java developers to incorporate XML data and processing functions in Java applications. Implementing all binding classes for an existing XML interface can be time-consuming. In this tutorial, we shall learn generating classes from XML Schema Design (XSD) using JAXB. This reference page is part of a series of articles on JAXB: Introduction to JAXB; JAXB Validation; XSLT with JAXB; Schemagen – convert Java classes to XML Schema; Xjc – convert Xml Schema to Java xjc schema1. Jan 29, 2014 In this post, I will give you a quick example to use 'xjc' to create java classes. Follow the steps below to generate Java source files from XML Schema in Eclipse IDE. First, look at what an XML schema is. XJC - Generating Java Classes from an XML Schema The XJC tool can be used to generate Java classes from an XML schema. A schema formally describes what a given XML document contains, in the same way a database schema describes the data that can be contained in a database (table structure, data types). JAXB Introduction. xjb xjc schema1. The class hierarchy behaves in a sane manner (unlike the weird stuff XMLBeans used to make) and can be used for marshalling and unmarshalling XML to POJOs. Jan 21, 2019 Prior to Java SE 6, developers wanting to use JAXB with a Java SE . Use the Java Architecture for XML Binding (JAXB) tools to generate Java classes from an XML schema with the xjc schema compiler tool. xjb is JAXB Introduction. Create a new XSD file and name it as “employee. 1 API; 2. save this file with student. I'm trying to use xjc tool in order to generate java code according to some schemas. JAXB is a Java Api for for Marshalling and UnMarshalling XML Data. JAXB (JSR-222) implementations convert instances of Java classes (that may contain annotations) to/from XML. For generation of Java classes from XML Schema during Maven build I will use Java. This is the XML schema in our example which is to be bound to java classes. xjb In addition, the ordering of the schema files and binding files on the command line does not matter. Save the file. This is the XML schema in our example which is to be bound to java classes Generate XSD from Java Class We will use JAXB-2 Maven Plugin in a maven project to generate XSD from java classes. There are numerous plugins available to perform Code-Generation using XSD as input. Open Eclipse IDE and create a new JAXB project which can be done in many ways, File menu -> New -> Other -> JAXB -> JAXB Project. The JAXB XJC schema binding compiler transforms, or binds, a source XML schema to a set of JAXB content classes in the Java programming language. Create xsd directory in src/main/resources and copy yours XSD’s into this folder. xsd is present : xjc -cp . While I use command xjc even xjc. Traditionally we had to use the xjc schema compiler from command prompt or an ant build for generating java code from xsd. xml just invoke the xjc command and with classpath argument pointing to the downloaded JAXB jar files . XJC (XML to Java Compiler) is a utility for generating those objects from an XML schema. mycom. If we generate Java classes from our schema using the above command, then we will get a Customer class that looks something like the following (accessors have been omitted to save space). Generate Java Class from xml Schema in Eclipse December 15, 2013 by Mukesh Kumar at 3:47 pm In this article we will discuss about how to generate java classes from XSD in Eclipse IDE. You will have to add it on your own, like this: I have two elements mentioned in XSD as one with minOccurs="0" nillable="true" and other one minOccurs="1" nillable="true" I am creating java classes using XJC command. xjc This can be invoked from command line as follows: xjc[-options] Let’s use the schema file generated using schemagen to create the java file. . xsd schema3. While I use command xjc even I am using JAXB on a project. xsd-gen xmlFileName. xml Tree. In questo articolo abbiamo usato MAVEN, mentre questa volta vogliamo vedere come si usa XJC. Run the xjc utility on the example schema with the command: "xjc po. The Extensible Markup Language (XML) and Java technology are natural partners in helping developers exchange data and programs across the Internet. Just right click the xsd and generate jaxb classes. This class is created by the xjc. xsd -b bindings1. The documentation that I can find is all for calling XJC from the command line or from Ant; is there a way to call it programatically and pass in the DOM element as the input? schemagen command for JAXB applications. html  Jun 27, 2019 Use the Java Architecture for XML Binding (JAXB) tools to generate Java classes from an XML schema with the xjc schema compiler tool. Now days, there’s a plethora of libraries and methods to choose from and some of them are baked right into the core java class libraries. EXE tool from the Visual Studio Command Prompt (Start -> Visual Studio 2005 -> Visual Studio Tools -> Visual Studio Command Prompt) as there is no graphical front end for the tool. the attraction of JAXB is that it is bundled with the JDK, I have been to use xjc. xjbIn addition, the ordering of the schema files and binding files on the command line does not matter. The compiler, xjc , is provided in two flavors in the Application Server: xjc. g. Home · Java & XML tutorial; Generating JAXB classes with Maven plugin How to generate JAXB classes based on XSD file automatically using Maven? to generate JAXB classes based on XSD, you internally use xjc command in JDK. C:\java\jaxb) Set the JAVA_HOME path to where the Java 1. However the current Jee eclipse provide inbuilt support for generating the JAXB java classes and interfaces from input xsd. However the  Feb 13, 2018 So to generate java classes from xsd schema using Gradle we have to 'com. xsd on my local file system A Simple Gradle JAXB Configuration 14 Aug 2017 - Source - Comments Working with any XML schema is often a daunting task and when using Java it is common to use a library such as JAXB to turn that schema into Java classes and then marshal (or unmarshal) the XML using those classes. XJC is included in the bin directory in the JDK starting with Java SE 6. You will have to add it on your own, like this: I have created a simplified example that shows that XJC is dependent on the order of the XSDs specified on the command line. xml. class file, which allows the XJC To run the target from command line, open cmd and go to the folder where  Java Architecture for XML Binding (JAXB) is a software framework that allows Java developers The tool "xjc" can be used to convert XML Schema and other schema file types (as of Java 1. ‘xjc. Generating JAXB classes from a xsd schema in a Maven project. We can open cmd [command prompt] and enter following command. XJC is a Java SE tool that compiles an XML schema file into fully annotated Java classes. The string entered here must use CDATA or < to escape embedded HTML tags. Oct 29, 2015 xjc can generate java classes from a XML schema. sh (Solaris/Linux) and xjc. Here we will learn how to use jaxb2-maven-plugin XJC in a maven project to generate java classes from XSD. The below example will show you how to do it. tech . xjc comes along with jdk and you may find it in jdk bin path. We've read about generating classes from XSD. tools. You have to add jdk bin to the path. xsd Use of the JAXB XJC binding compiler tool (via the Jacobono JAXB Gradle plugin) to generate Java source code from an XML schema. Dec 30, 2016 How to share common xsd accross independent XML schemas and xjc is the tools provided by JAX-B that allows to generate Java . xjc -help. options. Using this API you can transform any XML document into a java object and any java object into an XML document. Once above tools are set. JAXB provides “xjc” tool to convert XML Schema to class representations. xsd’. Open Eclipse IDE and create a new JAXB project which can be done by navigating to File-> New -> Other -> JAXB -> JAXB Project. Use the xjc schema compiler tool to start with an XML schema definition (XSD) to create a set of JavaBeans that map to the elements and types defined in the XSD schema. sun. Create a new Java project folder and name it as “JAXBXJCTool”. This reference page is part of a series of articles on JAXB: Command Line Syntax. xjb -b bindings2. com/rss/atom. xsd Multiple errors trying to generate Java JAXB classes from XML Schema. It can generate a schema starting with Java source or class files. java with help of xjc tool in few steps. 2 specification. Save it with . Nov 12, 2014 The following model was generated by the schema to Java compiler (XJC). xsd schema2. Contribute to sbt/sbt-xjc development by creating an account on GitHub. You can also generate an XML Schema directly from your annotated Java classes using the JAXB XML Schema binding generator: schemagen. The command-line options. Create a new folder ‘src’ inside the project folder. I run this command in the folder of ‘sample. xsd schema2. The schemagen tool converts Java classes to a XML Schema. Requirements. After that I just use this command line to generate Java classes : xjc myschema. xsd B. -d dir. net Maven 2 JAXB 2 Plugin . As shown below, the root issue is in the handling of the XML Schema namespace with leading digit; specifically 1. Generating Java Classes. Eclipse Indigo IDE for Java EE Developers Just type the following command in command prompt ( assuming you have the xsd file in same working directory ) xjc test. By default, the XJC binding compiler generates the Java content classes in the current directory. JDK 8 or 9. -p pkg When you specify a target package with this command-line option, it overrides any binding customization for the package name and the default package name algorithm defined in the specification. This article is a quick reference page to use xjc from both the command line and Maven. We will use JAXB-2 Maven Plugin in a maven project to generate XSD from java classes. Step 3: Generate the java stub code corresponding to the xsd. To generate the binding classes there is a command line tool xjc provided by the JDK. In this case, we use org. Luckily, with a bit of xml configuration in the bindings file, we can tell XJC to use type adapters for Java 8’s Date and Time API (aka JSR-310). First error: Errors occurred during wsgen. When I use xjc, the compiler is assigning elements to the same classpath and element. Getting Started. xsd imports B. I tried with xjc command through java code, but its not generating that classes. In the ObjectFactory, QName is created for minOccurs="0" nillable="true" element but not for others. In this  This topic describes how to get a Java representation of an XML Schema, which involves mapping the elements of the XML Schema to members of a Java class. xsd includes A. bind:jaxb-impl:2. JAXB's XJC tool can generate classes from a hosted XML schema (see Processing Atom Feeds with JAXB), but in this example the XML schemas are still under development and have not been hosted yet. First question is, What -b bindings. Use xjc command from terminal. bind:jaxb-xjc:2. Use the schema generator tool, schemagen, to generate an XML schema using Java Architecture for XML Binding (JAXB). 0 and 1. come raccontato in questo articolo, attraverso JAXB possiamo trasformare uno schema XSD in una serie di classi JAVA. Use JAXB xjc tooling to compile an XML schema file into fully annotated Java classes. Using Java 8 Time within JAXB with XJC 21 Sep 2017 - Source - Comments When we left off on our Gradle JAXB project, we were using a simple Gradle configuration to generate Java classes from an XML schema using JAXB and XJC. Using JAXB to generate XML from the Java, XSD. xsd'. Use JAXB APIs and tools to establish mappings between an XML schema and Java classes. xjb -b bindings3. Generate Java classes using ‘xjc’ Follow the steps below to generate a set of Java source files from XML schema. xsd -b bindings123. -verbose -Xfluent- api. 5 or greater is installed (provided that this is already installed!) Now you are all set. With these changes, the JAXB xjc compiler can be executed against an XSD on the command line using JDK 11. So far, we manually coded the Models for the XML. xml > xsdFileName. XSD to Java Class with XJC. We can easily convert xsd file into . xml file. More detail about the the options of the xjc utility, please read Java Architecture for XML Binding Binding Compiler (xjc). The XJC tool will not know where to find the imported XML schema. As you can see in the snippet below, xjc support lots of options. java files from a schema. jaxb2-maven-plugin XJC is JAXB Binding compiler tool that can be used to generate Java Classes from XSD files. The sample binding file referenced by the cxf-codegen-plugin configuration is below. throws BadCommandLineException, IOException {. The second import does not include a system ID at all. Eclipse won´t generate automatically the @XmlRootElement annotation. JAXB is a bridge between the Java and the XML worlds, enabling your code to transparently marshalls and unmarshalls your Java objects to and from XML. The output directory must already exist. I want to programmatically call XJC from within my Java code to generate Java classes for XML schema. For this, execute the following xjc command from the path where schema1. xsd -b bindings123. Dec 19, 2012 Traditionally we had to use the xjc schema compiler from command prompt or an ant build for generating java code from xsd. An XML schema describes the coarse shape of the XML document, what fields an To get started you will need an XML file, in this example I will again use the cd catalogue XML from W3 Schools. xsd it's work but I receive only one Java file and many static classes inside it. I need to generate jaxb classes from xml file without xsd. I am using Spring maven plugin, I want to create POJO classes from specified xml schema in particular folder. During a recent project, I needed to marshal and unmarshal XML to and from Java based on an XML schema. xjc. Here I will throw light on how to generate XML dynamically. use of xjc in a Java project : maven plugins, ant tasks or direct command line invocations. My questions: 1. xsd is in The schemagen tool converts Java classes to a XML Schema. Create a companion source code JAR. I've already parsed the XML schema into a DOM structure. xjb In addition, the ordering of the schema files and binding files on the command line does not matter. After the Java artifacts for your application are generated, you can generate fully annotated Java classes from an XML schema file by using the JAXB schema compiler, xjc command-line tool. add jaxb-2-maven plugin target in pom. xsd". Java classes should have JAXB annotations to be used by this plugin. 1. Execute: In the previous example provided here, we saw how to generate XML Schema from Java classes using ‘schemagen’ command line tool. With this we decided to use JAXB. xjc - Java™ Architecture for XML Binding xjc schema1. The schemagen command-line tool comes with the JDK. xjc -d generated http://www. example customer. -d By default, the XJC binding compiler will generate the Java content classes in the current Jaxb Command To Generate Java Classes From Xsd JAXB generates classes and groups them in Java packages. The resulting annotated Java classes contain all the necessary information that the JAXB runtime requires to parse the XML for marshaling and unmarshaling. sbt-xjc An SBT Plugin to compile XML Schemata to JAXB Java sources with XJC xjcCommandLine, Seq[String], Additional command line, e. xjc compiler can be executed against an XSD on the command line  Oct 10, 2013 JAXB also provides a way to generate XML schema from Java objects The jaxb -xjc. In this post I will demonstrate how you can generate the same Java classes (User and UserList) from XML Schema (XSD) during Maven build, therefore using a top-down approach. Use JAXB xjc tooling to generate JAXB classes from an XML schema file. It will print the following: Usage: xjc [-options ] <schema file/URL/dir/jar> [-b <bindinfo>] JAXB2 : Generate Java interface out of a xsd element. JAXB is one of them. xsd  Oct 17, 2016 In the example provided here, we saw how to generate Java classes from XML schema using JAXB binding compiler 'xjc' command. Of course you need to add the Eclipse plugin first. Uncompress the XSD zip file and go into the uncompressed folder. xjc schema1. schemagen. Now I have found one way to generate xsd files firstly, then use xjc command to generate JAXB - Generate Stubs from XSD Submitted by Vignesh on Mon, 05/23/2011 - 12:42 This article describes the method of generating the JAXB Stubs from the XML schema using ANT build. In most cases, xjc creates a class that won't suit your needs. Now we will see how to create the same in Eclipse IDE. Generate Java classes using ‘xjc’. 2) Generate XSD from JAXB Classes 2. Create a sample XML schema file named hello. xml under plugins. The wsimport, wsgen, schemagen and xjc command-line tools are located in the app_server_root  xjc. In the active editor tab. JAXB comes with a handy little command line tool called xjc, which takes a schema and spits out an annotated class hierarchy. Below I have a I run this command in the folder of 'sample. A package To generate a Java class from an XML schema using jaxb. If you have a XSD schema description, you can use the xjc binding compiler to create the required classes. Have Gradle installed and configured. You will need to run the XSD. Steps to generate Java classes from XSD in Eclipse : Follow the steps below to generate Java classes from XML Schema in Eclipse IDE. jar file contains the XJCTask. * The <javadoc> element specifies the Javadoc tool annotations for the schema-derived Java interface. Mar 2, 2016 In this tutorial, we shall learn generating classes from XML Schema Design This can be achieved using JAXB binding compiler XJC command. 1. Step 1: Create JAXB project. xsd namespaces. Using xjc. We will use the same XML document as mentioned in the previous example. Now follow the below steps in order to complete the example. Eclipse. One can download the Java WSDP from here, it includes the JAXB implementation tools required. sun. Generate JPA Java classes from XSD schema file using Maven. xjb -b bindings3. In my example (attached), I have 3 XSDs in 2 namespaces: A2. The binding customization schema provides a formal definition of the allowed customization elements, however JAXB provides extensions that again can be listed via xjc -help via command line. java. Compiles an XML schema file into fully annotated Java classes. But there are already these complex structures we don't know how to code. xjc. Sometimes, while integrating with third party software, we only get XSD’s as input. 1) Navigate to Eclipse Option 2. Now I want to mention about the input parameters that I used. 2) Select location for generated […] java documentation: XJC. XML schemas describe the data elements and relationships in an XML document. 6, RELAX NG, XML DTD, and WSDL are supported  Dec 8, 2017 Customization of the XML Schema-to-Java binding process is covered in . I would like to generate Java classes from XML file so I use this online helper to generate schema from XML file. xjc -d src company. // Any modifications to this file will be lost upon recompilation of the source schema. kbcafe. net/nonav/2. The xml schema can be specified in DTD, XSD or other format. schemagen command for JAXB applications Use the schema generator tool, schemagen, to generate an XML schema using Java™ Architecture for XML Binding (JAXB). Right-click on XSD file and Generate > Java > Schema to JAXB Java Classes. The documentation that I can find is all for calling XJC from the command line or from Ant; is there a way to call it programatically and pass in the DOM element as the input? With these changes, the JAXB xjc compiler can be executed against an XSD on the command line using JDK 11. We can convert xsd files to java file vert easily using xjc tool . 2. The idea is that you bind an XML Schema to an object and then use this schema-bound object to marshall or unmarshall XML Data. Click on the down arrow on New icon on toolbar -> Other -> JAXB -> JAXB Project. Environment Used: JDK 6 (Java SE 6) or later. Mahendra Kumar on Generate Java class from XML Schema using JAXB ‘xjc’ command sofia nan on How to create and consume a simple Web Service using JAX WS java - Vue par défaut du tiroir de navigation vers ExpandableListView on Android: Expandable List View Example Select Project type as “war” and below is the sample pom. In such situations, we are responsible to generate the actual JAXB2 compliant Java code which can then be used on client side to perform integration with third party. Customization of the XML Schema-to-Java binding process is covered in Chapter 7 of the JAXB 2. Because of that, I referred to full path of xjc. ) I've read about XJC, where We can convert xsd files to java file vert easily using xjc tool . JAXB is an XML-to-Java binding technology that enables transformation between schema and Java objects and between XML instance documents and Java object instances. For representation of resources in XML I used JAXB and I followed the bottom-up approach (I wrote the Java classes and I let to generate XML/XSD from Java classes). The JAXB- specific xjc and schemagen tools, which you use to convert an XML Schema JDK 11 or newer, you'll get a “command not found” or similar error. come sicuramente ricorderete XJC è un tool che è già presente nella JDK, ( nella cartellina bin ), quindi non c'è bisogno… I want to programmatically call XJC from within my Java code to generate Java classes for XML schema. JAXB – Jacobono XJC Gradle Plugin Example The complete working project for this post is available for download at my Github Blog Examples Project . exe’ can be found on where you installed jdk. xjb xjc schema1. Prerequisites. Use this option to specify an alternate output directory. xjc command for xsd to java