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Identify JAXB Implementation Classes
How to Identify JAXB Implementation Classes?
✍: FYIcenter.com
You can use the following simple Java program, JaxbClassInfo.java,
to Identify JAXB Implementation Classes:
// Copyright (c) FYIcenter.com import javax.xml.bind.JAXBContext; import javax.xml.bind.Marshaller; public class JaxbClassInfo { public static void main(String[] args) throws Exception { JAXBContext c = JAXBContext.newInstance("com.fyicenter.demo"); Marshaller m = c.createMarshaller(); System.out.println("JAXB Implementation Classes:"); System.out.println(" JAXBContext: "+c.getClass()); System.out.println(" Marshaller: "+m.getClass()); } }
Compile and run JaxbClassInfo.java as shown below in the .\src\ folder, where the data type classes were generated by XJC:
fyicenter> cd src fyicenter> java -cp .:../jaxb-ri/mod/jaxb-api.jar:\ ../jaxb-ri/mod/jaxb-runtime.jar:\ ../jaxb-ri/mod/istack-commons-runtime.jar:\ ../jaxb-ri/mod/javax.activation-api.jar \ JaxbClassInfo.java JAXB Implementation Classes: JAXBContext: class com.sun.xml.bind.v2.runtime.JAXBContextImpl Marshaller: class com.sun.xml.bind.v2.runtime.MarshallerImpl
As you can see, the reference implementation of JAXB API has the "com.sun.xml.internal.bind" package name.
But the Java SE implementation of JAXB API bundled in Java 8 has a different package name:
fyicenter> \local\jdk-1.8.0\bin\javac JaxbClassInfo.java fyicenter> \local\jdk-1.8.0\bin\java JaxbClassInfo JAXB Implementation Classes: JAXBContext: class com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl Marshaller: class com.sun.xml.internal.bind.v2.runtime.MarshallerImpl
⇒ MyUserObject.java - Create Object from Data Type Class
⇐ XJC -p Option for Class Package Name
2018-05-08, 854🔥, 0💬
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