Demonstrate the following in java:
Proper handling of memory and objects to avoid memory leaks
1.First of all what is memory leak
A Memory Leak is a situation when there are objects present in the heap that are no longer used, but the garbage collector is unable to remove them from memory and, thus they are unnecessarily maintained. A memory leak is bad because it blocks memory resources and degrades system performance over time.
A memory leak is bad because it blocks memory resources and degrades system performance over time. And if not dealt with, the application will eventually exhaust its resources, finally terminating with a fatal java.lang.OutOfMemoryError.
2. Why does it occurs
Java does automatic Garbage collection. However there can be situations where garbage collector does not collect objects because there are references to them. There might be situations where an application creates lots of objects and does not use them. Just because every objects has valid references, garbage collector in Java can’t destroys the objects. Such types of useless objects are called as Memory leaks. If allocated memory goes beyond limit, program will be terminated by rising OutOfMemoryError.
3 .Now the question arises how to handle object to avoid memory leak
* To get rid of memory leak you can reference objects
EXPLANATION OF ABOVE POINT:
Using the java.lang.ref package, you can work with the garbage collector in your program. This allows you to avoid directly referencing objects, but use special reference objects that are easily cleared by the garbage collector. The special subclasses allow you to refer to objects indirectly. For instance, Reference has three subclasses: PhantomReference, SoftReference, and WeakReference.
A referent, or an object that is referenced by these subclasses, can be accessed using that reference object’s get method.How does garbage collector act with each type of referent?
ADVANTAGES
4.Other ways to prevent memory leak
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Demonstrate the following in java: Proper handling of memory and objects to avoid memory leaks
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