Question

I have some Java code that is using flexjson.JSONDeserializer and flexjson.JSONSerializer. (simply speaking JSONDeserializer creates an class instance using property value pairs from a String of JSON and JSONSerializer takes a class instance and creates a String of JSON.)

And now I have a need to also use something similar for XML, what is the best match and is there something similar but that has better performance?

simple example

class X {
    private Integer a;
    public void setA(Integer a);
    public Integer getA(); 
}

with json equal to {"a":1} I have the following
new JSONDeserializer<X>().use(null, X.class).deserialize(json);

with json equal to [{"a":1},{"a":2}]
new JSONDeserializer<List<X>>().use(null, ArrayList.class).use("values", X.class).deserialize(json);

Answer 1

Edit
Comparision of XStream and JAXB here
I still need to compare them again.
End Edit

XStream seems easier than the JAXB option since I am also dealing with collections of X

code of serialization is simply

return new XStream().toXML(collection);

Maven dependences are

<dependency>
    <groupId>com.thoughtworks.xstream</groupId>
    <artifactId>xstream</artifactId>
    <version>1.4.3</version>
</dependency>
<dependency>
    <groupId>xmlpull</groupId>
    <artifactId>xmlpull</artifactId>
    <version>1.1.3.1</version>
</dependency>

and in your java file add

import com.thoughtworks.xstream.XStream;