MATLAB: Do I receive Java exceptions with I press the key sequence ‘Ctrl+Shift+F1’ in MATLAB 7.8 (R2009a)

MATLAB

In MATLAB 7.8 (R2009a), I receive a continuous series of Java exceptions like the following:
 com.mathworks.mde.desk.MLMainFrame[MainDesktopFrame,264,0,1544x1063,invalid,layout=java.awt.BorderLayout,title=MATLAB  7.8.0 (R2009a),resizable,normal,defaultCloseOperation=DO_NOTHING_ON_CLOSE,rootPane=com.mathworks.mwswing.desk.DTRootPane[,4,30,1536x1029,layout=com.mathworks.mwswing.desk.DTRootPane$DTRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=],rootPaneCheckingEnabled=true]
com.mathworks.mwswing.desk.DTRootPane[,4,30,1536x1029,layout=com.mathworks.mwswing.desk.DTRootPane$DTRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]
   javax.swing.JPanel[null.glassPane,0,0,1536x1029,hidden,layout=java.awt.FlowLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=16777217,maximumSize=,minimumSize=,preferredSize=]
   javax.swing.JLayeredPane[null.layeredPane,0,0,1536x1029,alignmentX=0.0,alignmentY=0.0,border=,flags=64,maximumSize=,minimumSize=,preferredSize=,optimizedDrawingPossible=true]
    javax.swing.JPanel[null.contentPane,0,21,1536x1008,layout=java.awt.BorderLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=73,maximumSize=,minimumSize=,preferredSize=]
     com.mathworks.mwswing.desk.DTToolBarContainer[ToolBarContainer,0,0,1536x48,alignmentX=0.0,alignmentY=0.0,border=com.mathworks.mwswing.desk.DTBorderFactory$ToolBarContainerBorder@19061ec,flags=0,maximumSize=,minimumSize=,preferredSize=,optimizedDrawingPossible=true]
      com.mathworks.mwswing.MJToolBar[Main,0,0,1536x23,layout=javax.swing.JToolBar$DefaultToolBarLayout,alignmentX=0.0,alignmentY=0.0,border=com.mathworks.mwswing.desk.DTBorderFactory$BasicToolBarBorder@cec87,flags=328,maximumSize=,minimumSize=,preferredSize=,floatable=false,margin=,orientation=HORIZONTAL,paintBorder=true]
       com.mathworks.mwswing.MJButton[,10,11,0x0,hidden,alignmentX=0.0,alignmentY=0.5,bor...

Best Answer

This is a feature of Java that shows the GUI hierarchy and is builtin to Java. It is a diagnostic tool, not a bug.
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