java - Spring MVC similar setters -

i have 2 classes string title field. have similar setters called settitle(). when use them object parameters in post request, field values rewrite new values in foo , bar. foo populates in controller before request.

public class foo{   // ...   string title;    public void settitle(string title){     this.title=title;     // ...   }  public class bar {   // ...   string title;    public void settitle(string title){     this.title=title;     // ...   } }  @modelattribute  public void populatefoo(model model){   foo foo = foo.getfromdb()     model.addattribute(foo); }  @requestmapping public string somepost(foo foo, bar bar, ...){   bar newbar = new bar();   newbar.settitle(bar.gettitle()); } 

when i'm invoking settitle() on newbar, method settitle() on foo invoked.

there no simple way spring mvc distinguish unfortunately - if submit field name title complex types have setter title set. 1 place dto may help, type encompasses fields both types , instantiates foo or bar appropriately.