Mark error in form using Bootstrap

Question

I\'ve started using Bootstrap in order to achieve a nice page design without resorting to GWT (the backend is made in java)

For my login screen I copied this example

Answer 1

Bootstrap V3:

Official Doc Link 1
Official Doc Link 2

  Input with success
  
  Woohoo!


  Input with warning
  
  Something may have gone wrong


  Input with error
  
  Please correct the error