Query on GC

[amittora29]

Hi,

I need help to understand below question and also the correct answer.

Class Student{
String name;
int age;
}

and other class :

public class test{
psvm(String [] args){
Student s1 = new Student();
Student s2 = new Student();
Student s3 = new Student();
s1=s3;
s3=s2;
s2=s1; // line 1

}

}

How many object are eligible for GC after line 1

[admin]

You need to tell what do you think is the answer and why so that we can explain any issue with your reasoning.
Also, you need to quote the source from where you got this question.

[admin]

You need to draw a diagram with references and objects. Then change the references after each statement.
Which book are you following?

[amittora29]

Thanks for your reply. Does this looks ok. I am following kathy Sierra. Is there any other book you would recommend. pls see the diagram below ( attached)

[admin]

No, like this:

test.jpg (84.15 KiB) Viewed 1964 times

Which book are you following?

[amittora29]

Kathy Sierra. Is there any other book you would recommend. So what should be the answer. No objects available for GC after line 1

[admin]

Answer is 1. There is no reference pointing to the first object at the end of line 1.
We recommend this:
https://www.amazon.com/gp/product/B07H6 ... nkCode=as2

[amittora29]

Thank you