java.lang.OutOfMemoryError: Java heap space
   at sun.font.StandardGlyphVector.initPositions(StandardGlyphVector.java:1299)
   at sun.font.StandardGlyphVector.getLogicalBounds(StandardGlyphVector.java:380)
   at java.awt.Font.getStringBounds(Font.java:2423)
   at java.awt.Font.getStringBounds(Font.java:2331)
   at java.awt.FontMetrics.getStringBounds(FontMetrics.java:531)
   at org.openide.awt.HtmlRenderer._renderPlainString(HtmlRenderer.java:365)
   at org.openide.awt.HtmlRenderer.renderPlainString(HtmlRenderer.java:337)
   at org.openide.awt.HtmlLabelUI.textWidth(HtmlLabelUI.java:137)
   at org.openide.awt.HtmlLabelUI.calcPreferredSize(HtmlLabelUI.java:181)
   at org.openide.awt.HtmlLabelUI.getPreferredSize(HtmlLabelUI.java:119)
   at org.openide.awt.HtmlRendererImpl.getPreferredSize(HtmlRendererImpl.java:342)
   at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2815)
   at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:492)
   at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:553)
   at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:187)
   at javax.swing.plaf.basic.BasicTreeUI.getPathBounds(BasicTreeUI.java:529)
   at javax.swing.plaf.basic.BasicTreeUI.getPathBounds(BasicTreeUI.java:522)
   at javax.swing.plaf.basic.BasicTreeUI.paintVerticalPartOfLeg(BasicTreeUI.java:1427)
   at javax.swing.plaf.basic.BasicTreeUI.paint(BasicTreeUI.java:1167)
   at javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
   at javax.swing.JComponent.paintComponent(JComponent.java:780)
   at javax.swing.JComponent.paint(JComponent.java:1056)
   at org.openide.explorer.view.TreeView$ExplorerTree.access$1301(TreeView.java:1735)
   at org.openide.explorer.view.TreeView$ExplorerTree.guardedPaint(TreeView.java:1877)
   at org.openide.explorer.view.TreeView$ExplorerTree.access$1600(TreeView.java:1735)
   at org.openide.explorer.view.TreeView$ExplorerTree$GuardedActions.run(TreeView.java:2204)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.readAccess(DefaultMutexImplementation.java:252)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation$1R.run(DefaultMutexImplementation.java:1078)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1938)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.doWrapperAccess(DefaultMutexImplementation.java:1099)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.readAccess(DefaultMutexImplementation.java:245)
   at org.openide.util.Mutex.readAccess(Mutex.java:218)