Welcome to the Java Programming Forums
The professional, friendly Java community. 21,500 members and growing!
The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.
>> REGISTER NOW TO START POSTING
Members have full access to the forums. Advertisements are removed for registered users.
LinkBack URL
About LinkBacks
Objects
i just want to ask this for some clarification
myObjectOne = myObjectTwo.getTheValue(); // assuming this method returns an object(reference(
in the sample code.. what is myObjectOne? is it the receiving object? or is it the calling object that refers to the returned object value?
what is myObjectTwo? is it the receiving object? or is it the calling object that calls the method?
Related threads:
Re: Objects
myObjectOne is the receiving object. It's "receiving" the object reference from the method getTheValue(). myObjectTwo is the calling object, and any data associated with it can be used by the getTheValue() method.
chronoz13 (January 20th, 2010)
Re: Objects
something is confusing here.. the book says the reserved word "this" is used to refer to the receiving object
for examplemyObjectOne.doThisMethod();
inside the doThisMethod()
// assuming that these are the codes inside the doThisMethod(); public voi doThisMethod() { this.getTheFirstValue(); this.getTheSecondValue(); }
in this case the reserved word this is reffering to the myObjectOne object...
does the book teaching me somethin confusing?
by the way.. this is my exact assumption on what the book have said....
that the reserved word "this" is used to refer to the receiving object
Re: Objects
No you use the keyword this inside your class to represent the instance of the class itself. For instance take a simple getter method.
public class Test { private String string; public String getString() { return [b]this[/b].string; } }
Here you can see that the keyword this is referring to this instance of the class and it then returns the member called string from it.
// Json
Re: Objects
oh i forgot to include this.. assuming that the myObjectOne is an instance of its class...
darn... the book is a bit confusing...
Re: Objects
Even if you have multiple instances of an object, this will always refer to the current object the method is being called from.
public class Demo { String toDisplay; public Demo(String toDisplay) { this.toDisplay = toDisplay; } public void display(Demo demo2) { System.out.println("I'm displaying this demo's toDisplay: " + this.toDisplay); System.out.println("Now displaying demo2's toDisplay: " + demo2.toDisplay); } public static void main(String[] args) { Demo d1 = new Demo("demo1"); Demo d2 = new Demo("demo2"); d1.display(); } }
Reply With Quote