Should I use “this” keyword when I want to refer to instance variables within a method?

Question

My teacher says that when I try to access an instance variable within a method I should always use the this keyword, otherwise I would perform a double search.

Answer 1

this only applies to the case where a parameter has the same name as a class property.

public class Dog {
   String name;
   public Dog(String name) {
      name = name; //but which name? Are we just assigning a variable to itself?
      // here you could say this.name = name. Or you could rename one of the variables to resolve ambiguity
   }
}