Generic return type

Java function that accept a type param  and return a value of this type so  don't have to cast the return type

For Known String type in  and out:

public String stringReturnFunc(String out)
{                                                                
         return out;                                        
}                                                               

The compiler doesn't know anything about the type

public <T> T genricMT(T type)
{
  return type;
}

 If return type is of certain class-CertainClass

public <T extends CertainClass> T genricMT(T type){

  // now you can use YourType methods
  return type;
}