How to use getContainerBean() method?

Hello, Heres is my code:

MQMgmtBeanFactory domain = new MQMgmtBeanFactory();
        ConfigServerUtility configServeur = new ConfigServerUtility();
        configServeur.setConnectTimeout(3000);
        try {
            domain.connect("DomainSonic", "urls", "Administrator", "Administrator");
            List list = domain.getContainerBeanNames();
            for(int i=0 ; i<list.size(); i++){
                System.out.println(list.get(i));
            }
            IContainerBean container = domain.getContainerBean("/Containers/ct_Msg");
        } catch (MgmtException e) {
            e.printStackTrace();
        }

Result:

/Containers/VerificationContainer
/Containers/ct_Msg
/Containers/ct_Esb
/Containers/DM
com.sonicsw.ma.mgmtapi.config.MgmtException: Failed to load configuration for /Containers/ct_Msg - org/apache/xerces/impl/dv/InvalidDatatypeFacetException
    at com.sonicsw.ma.mgmtapi.config.impl.MgmtBeanBase.loadBean(MgmtBeanBase.java:52)
    at com.sonicsw.mf.mgmtapi.config.gen.AbstractMFMgmtBeanFactory.getContainerCollectionBean(AbstractMFMgmtBeanFactory.java:767)
    at CreatingQueues.main(CreatingQueues.java:46)
Caused by: java.lang.NoClassDefFoundError: org/apache/xerces/impl/dv/InvalidDatatypeFacetException
    at com.sonicsw.mx.config.impl.ConfigServer.loadConfigType(ConfigServer.java:713)
    at com.sonicsw.mx.config.impl.ConfigServer.loadConfigType(ConfigServer.java:678)
    at com.sonicsw.mx.config.impl.ConfigBeanImpl.<init>(ConfigBeanImpl.java:77)
    at com.sonicsw.mx.config.impl.ConfigServer.dirElement2ConfigElement(ConfigServer.java:1797)
    at com.sonicsw.mx.config.impl.ConfigServer.loadConfigElement(ConfigServer.java:525)
    at com.sonicsw.mx.config.impl.ConfigServer.loadConfigElement(ConfigServer.java:540)
    at com.sonicsw.ma.mgmtapi.config.impl.MgmtBeanBase.loadBean(MgmtBeanBase.java:47)
    ... 2 more
Caused by: java.lang.ClassNotFoundException: org.apache.xerces.impl.dv.InvalidDatatypeFacetException
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 9 more

I don't understand this problem. Can you help me please?

Thanks