java.lang.OutOfMemoryError: Java heap space
   at java.util.Arrays.copyOf(Arrays.java:3181)
   at java.util.ArrayList.grow(ArrayList.java:261)
   at java.util.ArrayList.ensureExplicitCapacity(ArrayList.java:235)
   at java.util.ArrayList.ensureCapacityInternal(ArrayList.java:227)
   at java.util.ArrayList.add(ArrayList.java:458)
   at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:568)
   at org.openide.util.lookup.SimpleProxyLookup$ProxyResult.collectFires(SimpleProxyLookup.java:308)
   at org.openide.util.lookup.SimpleProxyLookup$WeakResult.collectFires(SimpleProxyLookup.java:343)
   at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:566)
   at org.openide.util.lookup.SimpleProxyLookup$ProxyResult.collectFires(SimpleProxyLookup.java:308)
   at org.openide.util.lookup.SimpleProxyLookup$WeakResult.collectFires(SimpleProxyLookup.java:343)
   at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:566)
   at org.openide.util.lookup.ProxyLookup$R.collImpl(ProxyLookup.java:655)
   at org.openide.util.lookup.ProxyLookup$R.collectFires(ProxyLookup.java:582)
   at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:169)
   at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:125)
   at org.openide.explorer.DefaultEMLookup.updateLookups(DefaultEMLookup.java:134)
   at org.openide.explorer.DefaultEMLookup.propertyChange(DefaultEMLookup.java:166)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:197)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at org.openide.explorer.ExplorerManager$2.run(ExplorerManager.java:886)
   at org.openide.util.Mutex.doEvent(Mutex.java:1356)
   at org.openide.util.Mutex.readAccess(Mutex.java:355)
   at org.openide.explorer.ExplorerManager.fireInAWT(ExplorerManager.java:883)
   at org.openide.explorer.ExplorerManager$1AtomicSetSelectedNodes.fire(ExplorerManager.java:292)
   at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:303)
   at org.openide.explorer.view.OutlineView.callSelectionChanged(OutlineView.java:1165)
   at org.openide.explorer.view.OutlineView.access$1400(OutlineView.java:170)
   at org.openide.explorer.view.OutlineView$TableSelectionListener.valueChanged(OutlineView.java:1404)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184)