Java - Recommended Ways for Validation of Blank Entries -

good day!

i new programming esp. java , have problem regarding validation. want create validation wherein blank entries not accepted. if call code:

entry[i].setname(joptionpane.showinputdialog("enter name: ")); 

if entry blank, not accepted , error prompt:

cannot accept blank entries! 

of course remedied doing code:

 string name = joptionpane.showinputdialog("enter name: ");  while (name.equals("")){        joptionpane.showmessagedialog(null, "cannot accept blank entries!");        name = joptionpane.showinputdialog("enter name: ");  } 

but if want validate 100 fields don't want have blank entries, code messy , long...

so how better? i've read using getters , setters or try-catch methods validation don't know if kind of validation applicable. , don't know how it. (iam not experienced in programming) , if applicable, violating model-view-controller concept if included joption message dialog box on getter , setter methods? codes programmers in doing blank entries validation???

your opinion highly appreciated.

i think article how add validation code swing uis out.