Burst memory usage in Java

Question

I am trying to get a handle on proper memory usage and garbage collection in Java. I\'m not a novice programmer by any means, but it always seems to me that once Java touches so

Answer 1

Java allocate memory only to objects. There is no explicit allocation of memory. In-fact Java even treats array types as objects. Each time an object created it comes in heap.

The Java runtime employs a garbage collector that reclaims the memory occupied by an object once it determines that object is no longer accessible. This is automatic process.

Calling System.gc() may not collect garbage at the time you call it; thats why your memory is not reduced. In general, it is better to let the system decide when it needs to collect the heap, and whether or not to do a full collection.

System.gc() doesn't even force a garbage collection; it's simply a hint to the JVM that "now may be a good time to clean up a bit"

Java memory explained here link2