HI All, Can't understand the output of the question of following questions. in Method Arguments Exam 1 Any further explanation to make it more clear ??
Answer 9 a Prints: 1,1 Although the reference parameter i1 is reassigned inside of m1, the change has no impact outside of m1. Array references are passed by value: the invoked method gets a copy of the array reference. and
Answer 11 d Prints: 3,1 Inside of method m2, the local variables i1 and i2 remain unchanged while the shadowed instance variables are changed. Thanks in advance,
"The man who can drive himself further once the effort gets painful is the man who will win." <br />Roger Bannister
posted 12 years ago
In Question 9: i1 passed in method m1 is a "local copy" of i1 in method m1.Any operation on it will not effect the m1 of Class GFC306 out side the method.But i2 is different,as there is not a variable named i2,this.i2(the class variable )will be used. In Question 11: pay atention in "this" means the class itsself