How To Catch Out Of Memory Error In Java
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or catch outofmemoryerror android posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss out of memory exception java heap space Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes out of memory exception in java how to solve a minute: Sign up Is it possible to catch out of memory exception in java? [duplicate] up vote 41 down vote favorite 13 This question already has an answer here: How to handle OutOfMemoryError in Java? [duplicate] 14 answers I'm
Outofmemoryerror Java
developing a program that would require huge amount of memory, and I want to catch when out-of-memory exception happens. I had heard this is not possible to do, but curious if there is any development on this end. java exception out-of-memory share|improve this question asked Nov 7 '09 at 6:37 jy. 208135 marked as duplicate by RAS, Uwe Plonus, Tushar Gupta, iCodez, Jeremy Aug 29 '13 at 15:20 This question has been asked before and already has an answer. If those answers handle outofmemory exception android do not fully address your question, please ask a new question. add a comment| 9 Answers 9 active oldest votes up vote 63 down vote accepted It's not an exception; it's an error: java.lang.OutOfMemoryError You can catch it as it descends from Throwable: try { // create lots of objects here and stash them somewhere } catch (OutOfMemoryError E) { // release some (all) of the above objects } However, unless you're doing some rather specific stuff (allocating tons of things within a specific code section, for example) you likely won't be able to catch it as you won't know where it's going to be thrown from. share|improve this answer edited Nov 7 '09 at 6:51 answered Nov 7 '09 at 6:42 ChssPly76 71.4k14156169 12 Plus, there's likely no easy way for you to recover from it if you do catch it. –matt b Nov 7 '09 at 6:45 @matt b - in the specific case where you're able to catch it you're presumably trying to control your memory consumption and thus would be able to release some / all of it. But generally speaking you're right, of course. –ChssPly76 Nov 7 '09 at 6:48 @ChssPly76 (and others) - please read my answer to understand why trying to manage memory consumption by catching OOME's would be a BAD IDEA. –Stephen C Jul 10 '12 at 5:59 thank you @ChssPly76 ,but Stephen where there is no
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million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up 'Catching' OutOfMemoryError completely solves out-of-memory issue? up vote 5 down vote favorite I was getting OutOfMemoryError messages in LogCat http://stackoverflow.com/questions/1692230/is-it-possible-to-catch-out-of-memory-exception-in-java and my app was crashing because the errors were uncaught. Two things were causing the OutOfMemoryError: 1. Reading a large text file into a string. 2. Sending that string to my TextView. Simply adding a catch to these two things not only catches the OutOfMemoryError but appears to completely solve the out-of-memory problem. No more crashing and no more error messages in LogCat. The app just runs perfectly. How is this possible? What http://stackoverflow.com/questions/17250978/catching-outofmemoryerror-completely-solves-out-of-memory-issue exactly is happening? With this code, I was getting the error messages & app crashing: try { myString = new Scanner(new File(myFilePath)).useDelimiter("\\A").next(); } catch (FileNotFoundException e) { e.printStackTrace(); } myTextView.setText(myString); Just by 'catching' the OutOfMemoryError, no more error messages in LogCat and no crashing: try { myString = new Scanner(new File(myFilePath)).useDelimiter("\\A").next(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch(OutOfMemoryError e) { } try { myTextView.setText(myString); } catch(OutOfMemoryError e) { } java android try-catch out-of-memory share|improve this question edited Dec 31 '13 at 16:19 Kara 3,15773147 asked Jun 22 '13 at 12:56 Eric Glass 71211 1 to see logs add e.printstacktrace in OutOfMemoryError catch block –Calvin Dec 17 '13 at 13:25 1 Agree with @Droider. You don't see error messages because you aren't printing them like you were previously. –takendarkk Dec 31 '13 at 16:22 See stackoverflow.com/questions/2679330/… –Raedwald Apr 2 at 14:40 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote I guess your string isn't loaded completely, or even if it is (it may throw the error just after adding the text), what happens depends on the current memory available for your app so catching OutOfMemoryError isn't a viable solution here. If you really want to load a large string file and display it in an EditTex
in Java Everyone in java development faces java.lang.OutOfMemoryError now and then, OutOfMemoryError in Java is one problem which is http://javarevisited.blogspot.com/2011/09/javalangoutofmemoryerror-permgen-space.html more due to system's limitation (memory) rather than due to programming mistakes in most cases though in certain cases you could have a memory leak https://docs.oracle.com/javase/7/docs/api/java/lang/OutOfMemoryError.html which causing OutOfMemoryError. I have found that even though java.lang.OutOfMemoryError is quite common basic knowledge of its cause and solution is largely unknown among junior out of developers. Beginners books like Head First Java doesn't teach you much about how to deal with this kind of error. You need real experience dealing with production systems, handling a large number of user sessions to troubleshoot and fix performance issues like running out of memory. If you want to be out of memory good at troubleshooting and performance analysis, you need to learn some books on Java performance and profiling e.g. Java Performance The Definitive Guide By Scott Oaks or the Java Performance by Binu John. They are an excellent resource for senior Java developers and also teaches you tools and process to deal with an error like java.lang.OutOfMemoryError. In this article, we will explore what is java.lang.OutOfMemoryError; Why OutOfMemoryError comes in Java application, different type of OutOfMemoryError and How to fix OutOfMemoryError in Java. This article is purely meant to provide basic knowledge of java.lang.OutMemoryError and won't discuss profiling in detail. For profiling read the books I have mentioned before. What is java.lang.OutOfMemoryError in Java OutOfMemoryError in Java is a subclass of java.lang.VirtualMachineError and JVM throws java.lang.OutOfMemoryError when it ran out of memory in the heap. OutOfMemoryError in Java can come anytime in heap mostly while you try to create an ob
Method java.lang Class OutOfMemoryError java.lang.Object java.lang.Throwable java.lang.Error java.lang.VirtualMachineError java.lang.OutOfMemoryError All Implemented Interfaces: Serializable public class OutOfMemoryError extends VirtualMachineError Thrown when the Java Virtual Machine cannot allocate an object because it is out of memory, and no more memory could be made available by the garbage collector. OutOfMemoryError objects may be constructed by the virtual machine as if suppression were disabled and/or the stack trace was not writable. Since: JDK1.0 See Also:Serialized Form Constructor Summary Constructors Constructor and Description OutOfMemoryError() Constructs an OutOfMemoryError with no detail message. OutOfMemoryError(Strings) Constructs an OutOfMemoryError with the specified detail message. Method Summary Methods inherited from classjava.lang.Throwable addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace