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java Programming Glossary: collector

How is the java memory pool divided?

http://stackoverflow.com/questions/1262328/how-is-the-java-memory-pool-divided

The heap may be of a fixed or variable size. The garbage collector is an automatic memory management system that reclaims heap..

Error java.lang.OutOfMemoryError: GC overhead limit exceeded

http://stackoverflow.com/questions/1393486/error-java-lang-outofmemoryerror-gc-overhead-limit-exceeded

This message means that for some reason the garbage collector is taking an excessive amount of time by default 98 of all CPU..

Forcing Garbage Collection in Java?

http://stackoverflow.com/questions/1481178/forcing-garbage-collection-in-java

is to call System.gc which simply is a hint to the garbage collector that you want it to do a collection. There is no way to force..

Is there a destructor for Java?

http://stackoverflow.com/questions/171952/is-there-a-destructor-for-java

was just to dereference the data and wait for the garbage collector to collect them wouldn't there be a memory leak if my user repeatedly.. this is called entirely at the discretion of the garbage collector. So for classes that need to explicitly tidy up the convention..

Why is it a bad practice to call System.gc?

http://stackoverflow.com/questions/2414105/why-is-it-a-bad-practice-to-call-system-gc

it's a bad practice but then I've also been told garbage collector runs don't systematically stop the world anymore and that it.. it always a full collection cycle Are there really garbage collector implementations that can do their work without stopping the.. most likely broken. You don't know what sort of garbage collector you are running under. There are certainly some that do not..

Java Thread Garbage collected or not

http://stackoverflow.com/questions/2423284/java-thread-garbage-collected-or-not

stuff from being garbage collected. When the garbage collector determines whether your object is ' reachable ' or not it is.. ' or not it is always doing so using the set of garbage collector roots as reference points. Consider this why is your main thread..

Java Finalize method call

http://stackoverflow.com/questions/2506488/java-finalize-method-call

it would be worth reading it is Called by the garbage collector on an object when garbage collection determines that there are.. if the object is always accessible. Also the garbage collector is not guaranteed to run at any specific time. In general what..

What is the difference between a soft reference and a weak reference in Java?

http://stackoverflow.com/questions/299659/what-is-the-difference-between-a-soft-reference-and-a-weak-reference-in-java

memory. Weak references allow you to leverage the garbage collector's ability to determine reachability for you so you don't have.. image cache described above since you can let the garbage collector worry about both how reachable the objects are a strongly reachable..

How to deal with “java.lang.OutOfMemoryError: Java heap space” error (64MB heap size)

http://stackoverflow.com/questions/37335/how-to-deal-with-java-lang-outofmemoryerror-java-heap-space-error-64mb-heap

them they will continue to use heap space as the garbage collector will not delete them. In this case you can use a Java memory..

Are static fields open for garbage collection?

http://stackoverflow.com/questions/453023/are-static-fields-open-for-garbage-collection

its defining class loader may be reclaimed by the garbage collector ... Classes and interfaces loaded by the bootstrap loader may..

Android - What's the best way to share data between activities?

http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities

of WeakReferences Same idea but allowing the garbage collector to removed unreferenced objects e.g. when the user quits the..

System.gc() in Java

http://stackoverflow.com/questions/66540/system-gc-in-java

calling System.gc won't stop it because the garbage collector will attempt to free as much as it can before it goes to that..

Why is char[] preferred over String for passwords?

http://stackoverflow.com/questions/8881291/why-is-char-preferred-over-string-for-passwords

it's possible that arrays being moved by the garbage collector will leave stray copies of the data in memory. I believe this..

Java Garbage Collection Log messages

http://stackoverflow.com/questions/895444/java-garbage-collection-log-messages

When exactly is it leak safe to use (anonymous) inner classes?

http://stackoverflow.com/questions/10864853/when-exactly-is-it-leak-safe-to-use-anonymous-inner-classes

on whether it thinks they are being used. The Garbage Collector is pretty smart but not flawless. It can only determine if something..

What does “GC--” mean in a java garbage collection log?

http://stackoverflow.com/questions/1174976/what-does-gc-mean-in-a-java-garbage-collection-log

ee67ee3bd597 hotspot src share egrep h A2 B5 r ' ' # G1 Collector if evacuation_failed remove_self_forwarding_pointers if PrintGCDetails.. else if PrintGC gclog_or_tty print # Parallel Scavenge Collector promotion_failure_occurred promotion_failed if promotion_failure_occurred.. print Reason for GC with the Parallel Scavenge Collector The Young GC encountered a promotion failure see http mail.openjdk.java.net..

Is there a Java equivalent to C#'s 'yield' keyword?

http://stackoverflow.com/questions/1980953/is-there-a-java-equivalent-to-cs-yield-keyword

is way more complicated requiring you to adept a generic Collector which has a collect ResultHandler method... ugh. However you..

Does Java have support for multicore processors/parallel processing?

http://stackoverflow.com/questions/3330430/does-java-have-support-for-multicore-processors-parallel-processing

or real threading selling point. The G1 Garbage Collector introduced in newer releases also makes use of multi core hardware...

What does JVM flag CMSClassUnloadingEnabled actually do?

http://stackoverflow.com/questions/3334911/what-does-jvm-flag-cmsclassunloadingenabled-actually-do

the name of the flag I'm guessing that the CMS Garbage Collector doesn't by default unload classes and this flag turns it on..

How does Java Garbage collector handle self-reference?

http://stackoverflow.com/questions/407855/how-does-java-garbage-collector-handle-self-reference

need to set ListContainer.next to null as well for Garbage Collector to free it's memory or does it handle such self references automagically..

How is the default java heap size determined?

http://stackoverflow.com/questions/4667483/how-is-the-default-java-heap-size-determined

heap share improve this question According to Garbage Collector Ergonomics Oracle initial heap size Larger of 1 64th of the..

.Net vs Java Garbage Collector

http://stackoverflow.com/questions/492703/net-vs-java-garbage-collector

vs Java Garbage Collector Does anyone know the major differences between the Java and..

ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()

http://stackoverflow.com/questions/5670862/bytebuffer-allocate-vs-bytebuffer-allocatedirect

may not be stored contiguously in memory or the Garbage Collector could move it at any time. Arrays are objects in Java and the..

The main difference between Java & C++ [closed]

http://stackoverflow.com/questions/9192309/the-main-difference-between-java-c

freeing the allocated memory where in Java the Garbage Collector with all its algorithms I can think of at least 3 algorithms.. is no goto statement in Java. Exception and Auto Garbage Collector handling in Java is different because there are no destructors..