Java stack overflow error - how to increase the stack size in Eclipse

Question

I am running a program that I ve written in Java in Eclipse  The program has a very deep level of recursion for very large inputs  For smaller inputs the program runs fine however when large inputs are given  I get the following error   Exception in thread  main  java lang StackOverflowError   Can this be solved by increasing the Java stack size and if so  how do I do this in Eclipse   Update    Jon Skeet  The code is traversing a parse tree recursively in order to build up a datastructure  So  for example the code will do some work using a node in the parse tree and call itself on the node s two children  combining their results to give the overall result for the tree   The total depth of the recursion depends on the size of the parse tree but the code seems to fail  without a larger stack  when the number of recursive calls gets into the 1000s   Also I m pretty sure the code isn t failing because of a bug as it works for small inputs

User · Answer

Add the flag -Xss1024k in the VM Arguments    You can also increase stack size in mb by using -Xss1m for example

User · Answer

Open the Run Configuration for your application  Run Run Configurations     then look for the applications entry in  Java application     The arguments tab has a text box Vm arguments  enter -Xss1m  or a bigger parameter for the maximum stack size   The default value is 512 kByte  SUN JDK 1 5 - don t know if it varies between vendors and versions

User · Answer

You need to have a launch configuration inside Eclipse in order to adjust the JVM parameters   After running your program with either F11 or Ctrl-F11  open the launch configurations in Run -  Run Configurations    and open your program under  Java Applications    Select the Arguments pane  where you will find  VM arguments    This is where -Xss1024k goes   If you want the launch configuration to be a file in your workspace  so you can right click and run it   select the Common pane  and check the Save as -  Shared File checkbox and browse to the location you want the launch file   I usually have them in a separate folder  as we check them into CVS

User · Answer

When using JBOSS Server  double click on the server   Go to  quot Open Launch Configuration quot   Then change min and max memory sizes  like 1G  1m

User · Answer

It may be curable by increasing the stack size - but a better solution would be to work out how to avoid recursing so much  A recursive solution can always be converted to an iterative solution - which will make your code scale to larger inputs much more cleanly  Otherwise you ll really be guessing at how much stack to provide  which may not even be obvious from the input   Are you absolutely sure it s failing due to the size of the input rather than a bug in the code  by the way  Just how deep is this recursion   EDIT  Okay  having seen the update  I would personally try to rewrite it to avoid using recursion  Generally having a Stack lt T gt  of  things still do to  is a good starting point to remove recursion

User · Answer

When the argument -Xss doesn t do the job try deleting the temporary files from   c  Users  user  AppData Local Temp     This did the trick for me

User · Answer

i also have the same problem while parsing schema definition files XSD  using XSOM library   i was able to increase Stack memory upto 208Mb then it showed heap out of memory error for which i was able to increase only upto 320mb   the final configuration was -Xmx320m -Xss208m but then again it ran for some time and failed   My function prints recursively the entire tree of the schema definition amazingly the output file crossed 820Mb for a definition file of 4 Mb Aixm library  which in turn uses 50 Mb of schema definition library ISO gml    with that I am convinced I have to avoid Recursion and then start iteration and some other way of representing the output  but I am having little trouble converting all that recursion to iteration

User · Answer

Look at Morris in-order tree traversal which uses constant space and runs in O n   up to 3 times longer than your normal recursive traversal - but you save hugely on space   If the nodes are modifiable  than you could save the calculated result of the sub-tree as you backtrack to its root  by writing directly to the Node

[java] Java stack overflow error - how to increase the stack size in Eclipse?

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