garbage collection in java interview questions

. For example, a temporary object in a method becomes a useless object when the method call is complete, and its memory can be freed at this time. (2)Javaprovides some classes for garbage collection and provides a way to enforce garbage collection--calledSystem.GC (), but this is also an uncertain approach. Javadoes no

object objects cannot be freed because they will also be used by vectors. Static Vector v = new Vector (); for (int i = 1; i = new Object (); V.add (o); o = null ;} In this example, there is a reference to the vector object in the code stack with reference to the V and object o. In the For loop, we constantly generate new objects, add them to the Vector object, and then empty the O reference. The question is, if a GC occurs when the O reference is empty, can we cre

One, Java Virtual machine logical recovery mechanism1. Java Garbage collectorThe Java garbage collector is one of the three important modules of the Java Virtual Machine (JVM) (the other two are the interpreter and multithreading

because the generation of Java to GC garbage collection, no generational mechanism as long as you can determine which objects need to be recycled, the JVM can be recycled, then why should be generational. There's a reason for it. Obviously, for efficiency, generational can make GC more efficient. You can try to think that if all the objects are in memory without

1. Core Idea of the garbage collection AlgorithmThe Java language sets up a garbage collection mechanism to track the objects in use and discover and recycle objects that are no longer used (referenced. This mechanism can effectively prevent two risks that may occur in dynam

How does the Java garbage collection (GC) principle benefit us? For software engineers, satisfying technical curiosity is one, but it's important to understand that GC can help us write Java applications better.The above is my personal subjective view, but I believe that mastering GC is an essential skill to be a good

compiled, but this step does not generate the machine code for a particular platform, but rather generates a platform-independent byte code. Of course, this bytecode is not executable and must be interpreted using the Java interpreter. Therefore , the Java language can be considered as both a compiled language and an interpreted language. the Java program must b

memory management.Java garbage collection mechanismThe Java garbage collector is responsible for completing 3 tasks: allocating memory, ensuring that the referenced object's memory is not being reclaimed incorrectly, and reclaiming the memory space of objects that are no longer referenced.

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!There has been some knowledge of memory management and garbage collection in the entire tutorial. Here's a little summary.Java is run in a virtual memory environment of the JVM. Memory is divided into stacks (stack) and heaps (heap). We will examine these two areas separately.StackThe basic concept of the

management.Java garbage collection mechanism Java garbage collector is responsible for completing three tasks: allocating memory, ensuring that the memory of referenced objects is not recycled incorrectly, and reclaim the memory space of objects that are no longer referenced. Garb