Caused by: java.lang.ClassCastException: Cannot cast java.lang.Class to java.util.Date
    at java.lang.Class.cast(Class.java:3605)
    at org.jboss.marshalling.reflect.SerializableField.setObject(SerializableField.java:342)
    at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1864)
    at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1778)
    at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1406)
...
Caused by: an exception which occurred:
    in field com.my.company.common.entities.PesagemRodoviariaImagem.dataHoraCapturaImagem

Caused by: java.io.StreamCorruptedException: Unexpected byte found when reading an object: 224
    at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:839)
    at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:231)
    at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1864)

Caused by: an exception which occurred:
    in field com.my.company.common.entities.PesagemRodoviariaImagem.dataHoraCapturaImagem

package com.my.company;

import java.math.BigDecimal;
import java.util.Date;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

@Entity
public class Peso extends AbstractEntity{

	private static final long serialVersionUID = 1L;

	@Id
	@SequenceGenerator(allocationSize = 1, name = "PESO_IDPESO", sequenceName = "IDPESO")
	@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "PESO_IDPESO")
	private Long idPeso;

	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "IDBALANCA")
	private Balanca balanca;

	@ManyToOne(fetch = FetchType.EAGER)
	@JoinColumn(name = "IDFLAGTIPOCAPTURAPESO")
	private Flag flagTipoCapturaPeso;

	@Column(precision=15, scale=5)
	private BigDecimal peso;

	@Temporal(TemporalType.TIMESTAMP)
	private Date dataHoraCapturaPeso;

	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "IDUSUARIO")
	private Usuario usuario;
	
	@Column(length=255)
	private String justificativaPesagemManual;
	
	@OneToMany(mappedBy = "peso", fetch = FetchType.LAZY)  
	private Set<PesagemRodoviariaImagem> pesagemRodoviariaImagens;
	
	get and set ...
}

package com.my.company;

import java.util.Date;

import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;

@Entity
public class PesagemRodoviariaImagem extends AbstractEntity{

    private static final long serialVersionUID = 4181136886458805429L;

    @Id
    @SequenceGenerator(allocationSize = 1, name = "PESAGEMRODOVIARIAIMAGEM_IDPESAGEMRODOVIARIAIMAGEM", sequenceName = "IDPESAGEMRODOVIARIAIMAGEM")
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "PESAGEMRODOVIARIAIMAGEM_IDPESAGEMRODOVIARIAIMAGEM")
    private Long idPesagemRodoviariaImagem;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "IDPESO")
    private Peso peso;

    private String caminho;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "IDCONFIGURACAOFTP")
    private ConfiguracaoFTP configuracaoFTP ;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "IDCAMERA")
    private Camera camera;

    @Temporal(TemporalType.TIMESTAMP)
    private Date dataHoraCapturaImagem;

    @Transient
    private byte[] conteudoArquivo;
... get and sets

public abstract class AbstractEntity extends AbstractState implements Entity {
    private static final long serialVersionUID = 1L;

    public AbstractEntity() {
    }

    public AbstractEntity(EntityState entityState) {
        this();
        this.setEntityState(entityState);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }

        if(!(obj instanceof AbstractEntity)){
            return false;
        }

        AbstractEntity other = (AbstractEntity) obj;

        Long myId = getId();
        Long otherId = other.getId();

        if (myId == null || otherId == null) {

            if(myId == null && otherId == null){
                if(this.getClientId() != null && other.getClientId() != null){
                    return this.getClientId().equals(other.getClientId());
                }
            }

            return false;
        }

        return myId.longValue() == otherId.longValue();

    }

    @Override
    public int hashCode() {
        Long id = getId();
        return (id == null) ? super.hashCode() : id.hashCode();
    }

    @Deprecated
    public void validate() throws DCLogicException {
    }

    @Override
    public String toString() {
        String description = getClass().getSimpleName() + "[ID:" + getId()+"]";

        if(this instanceof IDescricaoCustomizada){
            description += "["+((IDescricaoCustomizada)this).getDescricaoCustomizada()+"]";
        }

        if(this instanceof IDescricaoEntidade){
            description += "["+((IDescricaoEntidade)this).getDescricaoEntidade()+"]";
        }

        return description;
    }

    public boolean hasId() {
        return this.getId() != null;
    }

}