Hi,
While running my program, i am getting a java.io.NotSerializableException. This is the exception message:
Caused by: java.io.NotSerializableException: myapp.dto.BSADTO

This is my DTO


import ...

public class BSADTO implements Serializable {
    private String stateCode;
    private BigDecimal serviceStateId;
    private String[] selectedCounties;
    private Collection countiesForSelectedState;

    public BSADTO() {

    }
    public BranchServiceAreaDTO(BigDecimal serviceStateId,String stateCode) {
....
            }

    public BigDecimal getServiceStateId() {
        return serviceStateId;
    }

    public void setServiceStateId(BigDecimal serviceStateId) {
        this.serviceStateId = serviceStateId;
    }

    public String getStateCode() {
        return stateCode;
    }

    public void setStateCode(String stateCode) {
        this.stateCode = stateCode;
    }

    public String[] getSelectedCounties() {
        return selectedCounties;
    }

    public void setSelectedCounties(String[] selectedCounties) {
        this.selectedCounties = selectedCounties;
    }

    public Collection getCountiesForSelectedState() {
        return countiesForSelectedState;
    }

    public void setCountiesForSelectedState(Collection countiesForSelectedState) {
        this.countiesForSelectedState = countiesForSelectedState;
    }

}



Is there anything wrong with my code.
Please help me. Thanks,
Malar

Check follow the Java Rule while passing Serializable objects using HttpSession:

"One Should use response forward, instead of response sendRedirect.
     As response sendRedirect, generated a fresh request and all the HttpSession
     objects will be Null. And should use request.getSession(false), As a true argument
     value to this will create a new session and the earlier session will be Null."