Java instance creation with object as parameter
0
When i create an object of a class which accepts object as a parameter
for Example
GarbageCollected gc= new GarbageCollected();
WeakReference<GarbageCollected> reference = new WeakReference<GarbageCollected>()(gc);
So here how does the reference 'gc' works internally while one creates the object of 'WeakReference' class with "gc' as the argument.
garbage-collection parameter-passing weak-references
asked Nov 23 '18 at 11:04
RajivRajiv
7113
add a comment |
0
When i create an object of a class which accepts object as a parameter
for Example
GarbageCollected gc= new GarbageCollected();
WeakReference<GarbageCollected> reference = new WeakReference<GarbageCollected>()(gc);
So here how does the reference 'gc' works internally while one creates the object of 'WeakReference' class with "gc' as the argument.
garbage-collection parameter-passing weak-references
asked Nov 23 '18 at 11:04
RajivRajiv
7113
1
When you pass a reference to an object as an argument to a constructor, it works the same as passing any value to a method’s or constructor’s parameter. The code inside the method or constructor may store that reference to a field of the object or not. That’s the basics you should have understood before ever dealing with things likeWeakReference.
– Holger
Nov 23 '18 at 17:31
@Holger what i wanted to understand is how the referencing happens and if one is unreferenced that it is subjected to null then what about the objects holding a reference to the nullified object.
– Rajiv
Nov 29 '18 at 15:53
What do you mean with “how the referencing happens”? Further, do you understand thatWeakReferenceis special and hence, not an example of “create an object of a class which accepts object as a parameter”? There is no such thing like a “nullified object”.
– Holger
Nov 29 '18 at 16:23
add a comment |
0
0
0
When i create an object of a class which accepts object as a parameter
for Example
GarbageCollected gc= new GarbageCollected();
WeakReference<GarbageCollected> reference = new WeakReference<GarbageCollected>()(gc);
So here how does the reference 'gc' works internally while one creates the object of 'WeakReference' class with "gc' as the argument.
garbage-collection parameter-passing weak-references
asked Nov 23 '18 at 11:04
RajivRajiv
7113
When i create an object of a class which accepts object as a parameter
for Example
GarbageCollected gc= new GarbageCollected();
WeakReference<GarbageCollected> reference = new WeakReference<GarbageCollected>()(gc);
So here how does the reference 'gc' works internally while one creates the object of 'WeakReference' class with "gc' as the argument.
garbage-collection parameter-passing weak-references
garbage-collection parameter-passing weak-references
asked Nov 23 '18 at 11:04
RajivRajiv
7113
asked Nov 23 '18 at 11:04
RajivRajiv
7113
asked Nov 23 '18 at 11:04
RajivRajiv
7113
asked Nov 23 '18 at 11:04
RajivRajiv
7113
asked Nov 23 '18 at 11:04
RajivRajiv
7113
7113
1
When you pass a reference to an object as an argument to a constructor, it works the same as passing any value to a method’s or constructor’s parameter. The code inside the method or constructor may store that reference to a field of the object or not. That’s the basics you should have understood before ever dealing with things likeWeakReference.
– Holger
Nov 23 '18 at 17:31
@Holger what i wanted to understand is how the referencing happens and if one is unreferenced that it is subjected to null then what about the objects holding a reference to the nullified object.
– Rajiv
Nov 29 '18 at 15:53
What do you mean with “how the referencing happens”? Further, do you understand thatWeakReferenceis special and hence, not an example of “create an object of a class which accepts object as a parameter”? There is no such thing like a “nullified object”.
– Holger
Nov 29 '18 at 16:23
add a comment |
1
When you pass a reference to an object as an argument to a constructor, it works the same as passing any value to a method’s or constructor’s parameter. The code inside the method or constructor may store that reference to a field of the object or not. That’s the basics you should have understood before ever dealing with things likeWeakReference.
– Holger
Nov 23 '18 at 17:31
@Holger what i wanted to understand is how the referencing happens and if one is unreferenced that it is subjected to null then what about the objects holding a reference to the nullified object.
– Rajiv
Nov 29 '18 at 15:53
What do you mean with “how the referencing happens”? Further, do you understand thatWeakReferenceis special and hence, not an example of “create an object of a class which accepts object as a parameter”? There is no such thing like a “nullified object”.
– Holger
Nov 29 '18 at 16:23
1
1
When you pass a reference to an object as an argument to a constructor, it works the same as passing any value to a method’s or constructor’s parameter. The code inside the method or constructor may store that reference to a field of the object or not. That’s the basics you should have understood before ever dealing with things like
WeakReference.– Holger
Nov 23 '18 at 17:31
When you pass a reference to an object as an argument to a constructor, it works the same as passing any value to a method’s or constructor’s parameter. The code inside the method or constructor may store that reference to a field of the object or not. That’s the basics you should have understood before ever dealing with things like
WeakReference.– Holger
Nov 23 '18 at 17:31
@Holger what i wanted to understand is how the referencing happens and if one is unreferenced that it is subjected to null then what about the objects holding a reference to the nullified object.
– Rajiv
Nov 29 '18 at 15:53
@Holger what i wanted to understand is how the referencing happens and if one is unreferenced that it is subjected to null then what about the objects holding a reference to the nullified object.
– Rajiv
Nov 29 '18 at 15:53
What do you mean with “how the referencing happens”? Further, do you understand that
WeakReference is special and hence, not an example of “create an object of a class which accepts object as a parameter”? There is no such thing like a “nullified object”.– Holger
Nov 29 '18 at 16:23
What do you mean with “how the referencing happens”? Further, do you understand that
WeakReference is special and hence, not an example of “create an object of a class which accepts object as a parameter”? There is no such thing like a “nullified object”.– Holger
Nov 29 '18 at 16:23
add a comment |
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1
When you pass a reference to an object as an argument to a constructor, it works the same as passing any value to a method’s or constructor’s parameter. The code inside the method or constructor may store that reference to a field of the object or not. That’s the basics you should have understood before ever dealing with things like
WeakReference.– Holger
Nov 23 '18 at 17:31
@Holger what i wanted to understand is how the referencing happens and if one is unreferenced that it is subjected to null then what about the objects holding a reference to the nullified object.
– Rajiv
Nov 29 '18 at 15:53
What do you mean with “how the referencing happens”? Further, do you understand that
WeakReferenceis special and hence, not an example of “create an object of a class which accepts object as a parameter”? There is no such thing like a “nullified object”.– Holger
Nov 29 '18 at 16:23