public static void main(String[] args) {
    try{
        processMessage();
    }catch(Exception E){
        E.printStackTrace();
    }

}

private static void processMessage() throws Exception{
    String transNbr = "";
    try{
        transNbr = "2345";
        throw new Exception();
    }catch(Exception E){
        if(!transNbr.equals("")){
            //stack trace originates from here, not from actual exception
            throw new Exception("transction: " + transNbr);
        }else{
            //stack trace gets passed correctly but no custom message available
            throw E;
        }
    }
}

throw new Exception("transction: " + transNbr, E);

throw new TransactionProblemException(transNbr, originalException);

TransactionProblemException : transNbr
at ...
at ...
caused by OriginalException ...
at ...
at ...

try{
    ...
}catch(Exception E){
    if(!transNbr.equals("")){
        throw new Exception("transction: " + transNbr, E);
    }
    ...
}

if (pass.length() < minPassLength)
    throw new InvalidPassException("The password provided is too short");
 } catch (NullPointerException e) {
    throw new InvalidPassException("No password provided", e);
 }


// A custom business exception
class InvalidPassException extends Exception {

InvalidPassException() {

}

InvalidPassException(String message) {
    super(message);
}
InvalidPassException(String message, Throwable cause) {
   super(message, cause);
}

public class MyNullPointException extends NullPointerException {

        private ExceptionCodes exceptionCodesCode;

        public MyNullPointException(ExceptionCodes code) {
            this.exceptionCodesCode=code;
        }
        @Override
        public String getMessage() {
            return exceptionCodesCode.getCode();
        }


   public class enum ExceptionCodes {
    COULD_NOT_SAVE_RECORD ("cityId:001(could.not.save.record)"),
    NULL_POINT_EXCEPTION_RECORD ("cityId:002(null.point.exception.record)"),
    COULD_NOT_DELETE_RECORD ("cityId:003(could.not.delete.record)");

    private String code;

    private ExceptionCodes(String code) {
        this.code = code;
    }

    public String getCode() {
        return code;
    }
}