How can I avoid a Java out-of-memory error when creating GUI using GUIDE?

[EDIT: 20110621 17:15 CDT - reformat - WDR]

Exception in thread "Timer-1" java.lang.OutOfMemoryError: Java heap space
  at java.lang.String.toLowerCase(Unknown Source)
  at java.io.Win32FileSystem.hashCode(Unknown Source)
  at java.io.File.hashCode(Unknown Source)
  at java.util.HashMap.get(Unknown Source)
  at com.mathworks.mlwidgets.explorer.control.DocumentContextImpl.getDocumentChanges(DocumentContextImpl.java:462)
  at com.mathworks.mlwidgets.explorer.control.DocumentContextImpl.refreshContents(DocumentContextImpl.java:569)
  at com.mathworks.mlwidgets.explorer.control.RefreshDaemon$2.run(RefreshDaemon.java:104)
  at java.util.TimerThread.mainLoop(Unknown Source)
  at java.util.TimerThread.run(Unknown Source)
Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space
  at java.lang.AbstractStringBuilder.<init>(Unknown Source)
  at java.lang.StringBuilder.<init>(Unknown Source)
  at javax.swing.plaf.basic.BasicTextUI.getInputMap(Unknown Source)
  at javax.swing.plaf.basic.BasicTextUI.installKeyboardActions(Unknown Source)
  at javax.swing.plaf.basic.BasicTextUI.installUI(Unknown Source)
  at javax.swing.JComponent.setUI(Unknown Source)
  at javax.swing.text.JTextComponent.setUI(Unknown Source)
  at javax.swing.text.JTextComponent.updateUI(Unknown Source)
  at com.mathworks.hg.peer.EditTextPeer$hgTextField.updateUI(EditTextPeer.java:559)
  at com.mathworks.hg.peer.EditTextPeer$hgTextField.setText(EditTextPeer.java:571)
  at com.mathworks.hg.peer.EditTextPeer.doSetString(EditTextPeer.java:126)
  at com.mathworks.hg.peer.AbstractUicontrolPeer$11.run(AbstractUicontrolPeer.java:552)
  at com.mathworks.hg.util.HGPeerQueue$HGPeerRunnablesRunner.runit(HGPeerQueue.java:228)
  at com.mathworks.hg.util.HGPeerQueue$HGPeerRunnablesRunner.runNotThese(HGPeerQueue.java:260)
  at com.mathworks.hg.util.HGPeerQueue$HGPeerRunnablesRunner.run(HGPeerQueue.java:276)
  at java.awt.event.InvocationEvent.dispatch(Unknown Source)
  at java.awt.EventQueue.dispatchEvent(Unknown Source)
  at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  at java.awt.EventDispatchThread.run(Unknown Source

[Gerd]

Hi Maria,

could you please explain a little bit what you are doing. It looks like using a timer

[Maria]

I am using the timer to check how much time my calculations need to be conducted.I made this tool in matlab that basically calculates energy needs..it also does some kind of optimization but it has a lot of 'for' loops..

Answer 1

[Friedrich]

Hi Maria,

please try to increase your java heap space from MATLAB. You can find this option under File -> Preferences -> General -> Java Heap Memory. Please make a restart of MATLAB after changing this value.

[Maria]

Will try that.Thank you Friedrich!

[Maria]

Friedrich

Apparently there is no java heap memory at my preferences options..Is this possible?

[Sean Lawson]

I am using R2010a and I found the option as Friedrich said.

[Friedrich]

2010a and higher having this options in the Preferences. For older Mls one has to create a java.opts file. How to do this can be found here:

http://www.mathworks.com/support/solutions/en/data/1-18I2C/index.html