Can anyone explain what is the difference between object vs instance vs reference, with a good example?
I'm confused about this part:
( classA a;
a = new classA(); )( classA a;
a = new classB(); )( classA a;
classB a = new classB(); )
- why the random tags?Maljam– Maljam2016-04-28 06:12:51 +00:00Commented Apr 28, 2016 at 6:12
- Reference points to an instance of an object.Rahul Tripathi– Rahul Tripathi2016-04-28 06:14:13 +00:00Commented Apr 28, 2016 at 6:14
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2 Answers
classA a is a reference variable.
new classA(); created Object / Instance
a = new classB() is assign object reference to variable
2 Comments
Suresh Kumar Msk
Then what is classA a; classB a = new classB();
muzahidbechara
Its actually 2 statement -
classA a; is a statement just declared reference variable without assignment. and classB a = new classB(); is a statement with assigmentClassA a is reference
a = new ClassA() a object os asign reference to variable
2 a = new classB() is pass the reference of classB
3 Here classA is override becauseeyou set same same name of reference
