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Categories >> Software >> Java Related >> Java J2EE >> Core Java
 
 


 

 
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Question
Can an unreachable object become reachable again?
 Question Submitted By :: Core-Java
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Yes, an unreachable object may become reachable again.This
happens when the object's finalize() method is invoked and
the objct performs an operation which causes it to become
accessible to reachable objects.
 
Is This Answer Correct ?    12 Yes 1 No
Niranjanravi
 
Answer
# 2
YES, Finalization is a feature of the Java programming
language that allows you to perform postmortem cleanup on
objects that the garbage collector has found to be
unreachable. It is typically used to reclaim native
resources associated with an object.
When the garbage collector determines that obj is
unreachable, it notices that obj is finalizable -- as it
had been recorded upon allocation -- and adds it to the
JVM's finalization queue. It also ensures that all objects
reachable from obj are retained, even if they are otherwise
unreachable, as they might be accessed by the finalizer.

So, we can say that it can be reachable.
 
Is This Answer Correct ?    10 Yes 1 No
Rakesh Kumar Jha
 
 
 
Answer
# 3
yes an unreachable object may become reachable once it get a
reference befre garbage collection especially in finalize()
method call
 
Is This Answer Correct ?    5 Yes 0 No
Ravikiran(aptech Mumbai)
 

 
 
 
Other Core Java Interview Questions
 
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Nested classes VS Inner classes? Infosys 3
Name the types of mouse event listeners ?   2
What are null interfaces? Give some examples?   2
how can be object class inherited to all class in a program when java does not support multiple inheritance??   4
How are Observer and Observable used?   3
what is difference between Exception and Error?   36
Hi Friends, can u give code to convert ArrayList to HashMap and HashMap to ArrayList.   1
public class Garbage { int a=0; public void add() { int c=10+20; System.out.println(c); System.out.println(a); } public static void main(String args[]) { Garbage obj=new Garbage(); System.gc(); System.out.println("Garbage Collected"); obj.add(); } } Above is a code in java used for garbage collection. object obj has been created for the class Garbage and system.gc method is called. Then using that object add method is called.System.gc method if called the obj should be garbage collected?   6
String is an immutable object. Then how can the following code be justified. String s1 = ?ABC?; String s1 = s1+?XYZ?; s.o.p(s1); The output is ABCXYZ, which is the value of s1 ? Flextronics 6
what is default layout of JFrame class?   5
when i write string s1="java"; in one program(application) and string s2="java"; in another application on the same jvm will both objects s2,s2 will refer to same memory location where "java" is stored in string pool.   2
How are this() and super() used with constructors?   9
 
For more Core Java Interview Questions Click Here 
 
 
 
 
 


   
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