xstream: com.thoughtworks.xstream.converters.reflection.ObjectAccessException

If you get any com.thoughtworks.xstream.converters.reflection.ObjectAccessException from your java programs, it may be due to : an upgraded of java version to 7.
As mentioned in xstream site: 

• Java 7 is detected and supported since xstream 1.4

Solution: Upgrade your xstream to 1.4

With maven: 

          <dependency>

                <artifactId>xstream</artifactId>

      <groupId>com.thoughtworks.xstream</groupId>

      <version>1.4</version>

          </dependency>