Entity bean with equals method

entity_equals_method.java

import java.util.Calendar;

public class User {

    private Long id;
    private Long version;
    private Calendar lastModified;

    private String username;
    private String emailAddress;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Long getVersion() {
        return version;
    }

    public void setVersion(Long version) {
        this.version = version;
    }

    public Calendar getLastModified() {
        return lastModified;
    }

    public void setLastModified(Calendar lastModified) {
        this.lastModified = lastModified;
    }

    public void updateLastModified() {
        setLastModified(Calendar.getInstance());
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getEmailAddress() {
        return emailAddress;
    }

    public void setEmailAddress(String emailAddress) {
        this.emailAddress = emailAddress;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        OdiseeUser that = (OdiseeUser) o;
        if (id != null ? !id.equals(that.id) : that.id != null) return false;
        if (emailAddress != null ? !emailAddress.equals(that.emailAddress) : that.emailAddress != null) return false;
        if (!username.equals(that.username)) return false;
        return true;
    }

    @Override
    public int hashCode() {
        int result = username.hashCode();
        result = 31 * result + (emailAddress != null ? emailAddress.hashCode() : 0);
        return result;
    }

}