Parsing the respective data in the String which is dynamic

Question

Hi,
I have customer application, in which we are handling the validation for customer details through a custom validator
For example, if I have not entered the mandatory value for custFirstName.I will get an error message in my java class as below:-
String errMsg = "Required value missing for CustomerVO.custFirstName"
Here I need to parse the error message (ie) I need only the field and VO which causes this error hence i need "CustomerVO.custFirstName" only
so that I can write the code to set the value for custFirstName
Like
if (mandatoryErrMsg){
//parse the errorMsg and get the respective field with VO (ie)CustomerVO.custFirstName
//and set the value
CustomerVO customerVO = new CustomerVO();
customerVO.setCustName("xxx");
save(customerVO);
Like wise i will get a different field with different VO
Like :-
String errMsg = "Required value missing for AddressVO.State"
Here I need to write a generic method which parse the only the respective VO and field like in this case AddressVO.State.
Since the VO and field can be anything. What is the min and max limit we need set for parsing and hoe we can parse only the
respective VO and field. please provide your opinion on this.
Thanks.

Answer 1

Ram wrote:
As per your previous post, it seems you need to parse only the last word of the error message. You can easily get the last word of the error message by using substring and lastIndex() methods.
For example,
String errMsg = "Required value missing for CustomerVO.custFirstName";
String lastWord = errMsg.substring(errMsg.lastIndexOf(" ")+1);You will get "CustomerVO.custFirstName" as the value for lastWord. Now you can easily split the value String.split() method by "VO." as delimiter.
lastWord.split("VO.");
That's one possible approach. Without knowing more details about the forms the error message can take, we can't know if it will work in all cases. Which I pointed out in my first response, and which the OP chose to ignore when demanding we solve his problem for him in his reply.