Example usage for java.lang InstantiationException printStackTrace

List of usage examples for java.lang InstantiationException printStackTrace

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Introduction

In this page you can find the example usage for java.lang InstantiationException printStackTrace.

Prototype

public void printStackTrace()

Source Link

Document

Prints this throwable and its backtrace to the standard error stream.

Usage

From source file:com.ricemap.spateDB.mapred.SpatialRecordReader.java

/**
 * Reads all shapes left in the current block in one shot.
 * @param shapes/*from w w  w.ja v a2 s.  co  m*/
 * @return
 * @throws IOException
 */
protected boolean nextShapes(ArrayWritable shapes) throws IOException {
    // Prepare a vector that will hold all objects in this 
    Vector<Shape> vshapes = new Vector<Shape>();
    try {
        Shape stockObject = (Shape) shapes.getValueClass().newInstance();
        // Reached the end of this split
        if (getPos() >= end)
            return false;

        long initialReadPos = getPos();
        long readBytes = 0;

        // Read all shapes in this block
        while (vshapes.size() < maxShapesInOneRead && readBytes < maxBytesInOneRead && nextShape(stockObject)) {
            vshapes.add(stockObject.clone());
            readBytes = getPos() - initialReadPos;
        }

        // Store them in the return value
        shapes.set(vshapes.toArray(new Shape[vshapes.size()]));

        return vshapes.size() > 0;
    } catch (InstantiationException e1) {
        e1.printStackTrace();
    } catch (IllegalAccessException e1) {
        e1.printStackTrace();
    } catch (OutOfMemoryError e) {
        LOG.error("Error reading shapes. Stopped with " + vshapes.size() + " shapes");
        throw e;
    }
    return false;
}

From source file:cern.c2mon.shared.common.datatag.address.impl.HardwareAddressImpl.java

/**
 * Create a HardwareAddress object from its XML representation.
 *
 * @param pElement DOM element containing the XML representation of a HardwareAddress object, as created by the
 *                 toConfigXML() method.
 * @throws RuntimeException if unable to instantiate the Hardware address
 * @see cern.c2mon.shared.common.datatag.address.HardwareAddress#toConfigXML()
 *//*from ww w  . j  ava  2  s.  c o  m*/
public final synchronized HardwareAddress fromConfigXML(Element pElement) {
    Class hwAddressClass = null;
    HardwareAddressImpl hwAddress = null;

    try {
        hwAddressClass = Class.forName(pElement.getAttribute("class"));
        hwAddress = (HardwareAddressImpl) hwAddressClass.newInstance();
    } catch (ClassNotFoundException cnfe) {
        cnfe.printStackTrace();
        throw new RuntimeException("Exception caught when instantiating a hardware address from XML", cnfe);
    } catch (IllegalAccessException iae) {
        iae.printStackTrace();
        throw new RuntimeException("Exception caught when instantiating a hardware address from XML", iae);
    } catch (InstantiationException ie) {
        ie.printStackTrace();
        throw new RuntimeException("Exception caught when instantiating a hardware address from XML", ie);
    }

    NodeList fields = pElement.getChildNodes();
    Node fieldNode = null;
    int fieldsCount = fields.getLength();
    String fieldName;
    String fieldValueString;
    String fieldTypeName = "";

    for (int i = 0; i < fieldsCount; i++) {
        fieldNode = fields.item(i);
        if (fieldNode.getNodeType() == Node.ELEMENT_NODE) {
            fieldName = fieldNode.getNodeName();

            if (fieldNode.getFirstChild() != null) {
                fieldValueString = fieldNode.getFirstChild().getNodeValue();
            } else {
                fieldValueString = "";
            }
            try {
                Field field = hwAddressClass.getDeclaredField(decodeFieldName(fieldName));
                fieldTypeName = field.getType().getName();

                if (fieldTypeName.equals("short")) {
                    field.setShort(hwAddress, Short.parseShort(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Short")) {
                    field.set(hwAddress, new Integer(Integer.parseInt(fieldValueString)));
                } else if (fieldTypeName.equals("int")) {
                    field.setInt(hwAddress, Integer.parseInt(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Integer")) {
                    field.set(hwAddress, new Integer(Integer.parseInt(fieldValueString)));
                } else if (fieldTypeName.equals("float")) {
                    field.setFloat(hwAddress, Float.parseFloat(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Float")) {
                    field.set(hwAddress, new Float(Float.parseFloat(fieldValueString)));
                } else if (fieldTypeName.equals("double")) {
                    field.setDouble(hwAddress, Double.parseDouble(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Double")) {
                    field.set(hwAddress, new Double(Double.parseDouble(fieldValueString)));
                } else if (fieldTypeName.equals("long")) {
                    field.setLong(hwAddress, Long.parseLong(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Long")) {
                    field.set(hwAddress, new Long(Long.parseLong(fieldValueString)));
                } else if (fieldTypeName.equals("byte")) {
                    field.setByte(hwAddress, Byte.parseByte(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Byte")) {
                    field.set(hwAddress, new Byte(Byte.parseByte(fieldValueString)));
                } else if (fieldTypeName.equals("char")) {
                    field.setChar(hwAddress, fieldValueString.charAt(0));
                } else if (fieldTypeName.equals("java.lang.Character")) {
                    field.set(hwAddress, new Character(fieldValueString.charAt(0)));
                } else if (fieldTypeName.equals("boolean")) {
                    field.setBoolean(hwAddress, Boolean.getBoolean(fieldValueString));
                } else if (fieldTypeName.equals("java.lang.Boolean")) {
                    field.set(hwAddress, new Boolean(Boolean.getBoolean(fieldValueString)));
                } else if (fieldTypeName.equals("java.util.HashMap")) {
                    field.set(hwAddress, SimpleXMLParser.domNodeToMap(fieldNode));
                } else if (field.getType().isEnum()) {
                    Object[] enumConstants = field.getType().getEnumConstants();
                    for (Object enumConstant : enumConstants) {
                        if (enumConstant.toString().equals(fieldValueString)) {
                            field.set(hwAddress, enumConstant);
                        }
                    }
                } else {
                    field.set(hwAddress, fieldValueString);
                }
            } catch (NoSuchFieldException nsfe) {
                String errorMsg = "fromConfigXML(...) - Error occured while parsing XML <HardwareAddress> tag. "
                        + "The following variable does not exist in " + hwAddressClass.toString() + ": \""
                        + decodeFieldName(fieldName) + "\"";
                log.error(errorMsg);
                throw new IllegalArgumentException(errorMsg);
            } catch (IllegalAccessException iae) {
                iae.printStackTrace();
                throw new RuntimeException(iae);
            } catch (NumberFormatException npe) {
                String errorMsg = "fromConfigXML(...) - Error occured while parsing XML <HardwareAddress> tag. Field \""
                        + fieldName + "\" shall not be empty since we expect a \"" + fieldTypeName
                        + "\" value. Please correct the XML configuration for " + hwAddressClass.toString();
                log.error(errorMsg);
                throw new IllegalArgumentException(errorMsg);
            }
        }
    }
    return hwAddress;
}

From source file:com.wit.and.dialog.internal.xml.XmlDialogInflater.java

/**
 * Returns parser for the requested XML dialog root tag.
 *
 * @param rootTag XML dialog root tag./*from ww w.  j av  a2  s  . c  om*/
 * @return Xml dialog parser or <code>null</code> if there is no parser registered for
 * the requested root tag.
 */
private XmlDialogParser getParser(String rootTag) {
    // Check if there is cached parser for requested tag.
    XmlDialogParser parser = CACHED_PARSERS.get(rootTag);

    if (parser == null) {
        final Class<? extends XmlDialogParser> parserClass = PARSERS.get(rootTag);
        if (parserClass != null) {
            try {
                // Create new parser.
                parser = parserClass.newInstance();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } finally {
                if (parser != null) {
                    // Set up and add parser into cache.
                    parser.dispatchSetUp(mResources);

                    // Clear cached parsers if needed.
                    if (CACHED_PARSERS.size() > MAX_CACHED_PARSERS) {
                        CACHED_PARSERS.clear();
                    }
                    CACHED_PARSERS.put(rootTag, parser);
                }
            }
        }
    }
    return parser;
}

From source file:com.concentricsky.android.khanacademy.app.HomeActivity.java

private void setListForTopic(final Topic topic, final Class<? extends AbstractListFragment<?>> fragmentClass,
        final boolean forward) {

    this.requestDataService(new ObjectCallback<KADataService>() {
        @Override/*from  w w w .ja  va 2 s  .  c  o m*/
        public void call(KADataService dataService) {
            try {
                final Fragment frag = fragmentClass.newInstance();
                Bundle args = new Bundle();
                args.putString(PARAM_TOPIC_ID, topic.getId());
                frag.setArguments(args);

                // transition the fragments
                FragmentTransaction tx = getFragmentManager().beginTransaction()
                        .setBreadCrumbTitle(topic.getTitle());

                tx.replace(R.id.activity_home_list_container, frag, TAG_LIST_FRAGMENT).commit();

            } catch (InstantiationException e) {
                // Swallow this; we know that both AbstractListFragment subclasses have zero-arg constructors.
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                // Swallow this; we know that both AbstractListFragment subclasses are visible here.
                e.printStackTrace();
            }
        }
    });

}

From source file:any.Linker.java

/** 
 * initialise with properties/*from w ww  .j  ava2 s  . c  o  m*/
 * 
 * @param properties
 */
public Linker(Properties properties) {
    this.properties = properties;

    final LoopConnection loop = new LoopConnection(this);
    //      namedCon.put("host", loop);
    namedCon.put("loop", loop); // FIXME

    // setup services from properties file
    ClassLoader cl;
    cl = Linker.class.getClassLoader();
    try {

        for (Map.Entry<Object, Object> p : properties.entrySet()) {

            String key = p.getKey().toString();

            if (key.startsWith("serve.")) {

                String name = key.substring(6);
                String classstr = p.getValue().toString();

                if (logger.isDebugEnabled())
                    logger.debug("setup servable with name: " + name + " and " + classstr);

                Servable s = (Servable) cl.loadClass(classstr).newInstance();
                servableMap.put(name, s);
                s.init(properties, loop.getOutQueue(), this);
            }
        }

    } catch (InstantiationException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    } catch (IllegalAccessException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    } catch (ClassNotFoundException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    ConfigServable configServable = new ConfigServable();
    servableMap.put("config", configServable);
    configServable.init(properties, null, null);

}

From source file:net.semanticmetadata.lire.solr.ParallelSolrIndexer.java

private void addFeatures(List features) {
    for (Iterator<Class> iterator = listOfFeatures.iterator(); iterator.hasNext();) {
        Class next = iterator.next();
        try {/*w  w w . j  a va2  s. c o  m*/
            features.add(next.newInstance());
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

From source file:org.ajax4jsf.templatecompiler.elements.A4JRendererElementsFactory.java

public TemplateElement getProcessor(final Node nodeElement, final CompilationContext componentBean)
        throws CompilationException {
    TemplateElement returnValue = null;//from   w w w. ja  v a  2 s .  c o m

    short nodeType = nodeElement.getNodeType();
    if (Node.CDATA_SECTION_NODE == nodeType) {
        returnValue = new CDATAElement(nodeElement, componentBean);
    } else if (Node.TEXT_NODE == nodeType) {
        returnValue = new TextElement(nodeElement, componentBean);
    } else if (Node.COMMENT_NODE == nodeType) {
        returnValue = new CommentElement(nodeElement, componentBean);
    } else if (Node.PROCESSING_INSTRUCTION_NODE == nodeType) {
        returnValue = new PIElement(nodeElement, componentBean);
    } else if (Node.ELEMENT_NODE == nodeType) {
        String className = (String) mapClasses.get(nodeElement.getNodeName());

        if (className == null) {
            className = DEFAULT_CLASS_ELEMENT_PROCESSOR;
        }

        if (!className.equals("")) {
            Class class1;
            try {
                log.debug("loading class: " + className);

                class1 = Class.forName(className);
                Object[] objects = new Object[2];
                objects[0] = nodeElement;
                objects[1] = componentBean;

                returnValue = (TemplateElement) class1.getConstructor(paramClasses).newInstance(objects);
            } catch (InstantiationException e) {
                throw new CompilationException("InstantiationException: " + e.getLocalizedMessage(), e);
            } catch (IllegalAccessException e) {
                throw new CompilationException("IllegalAccessException: " + e.getLocalizedMessage(), e);
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (SecurityException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
                throw new CompilationException("InvocationTargetException: " + e.getMessage(), e);
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                throw new CompilationException(" error loading class: " + e.getLocalizedMessage());
            }
        }
    }
    return returnValue;
}

From source file:com.google.code.facebook.graph.sna.applet.TreeCollapseDemo.java

@SuppressWarnings("unchecked")
public TreeCollapseDemo() {

    // create a simple graph for the demo
    graph = new DelegateForest<String, Integer>();

    createTree();//  w w  w .j  a v a 2 s.  co m

    layout = new TreeLayout<String, Integer>(graph);
    collapser = new TreeCollapser();

    radialLayout = new RadialTreeLayout<String, Integer>(graph);
    radialLayout.setSize(new Dimension(600, 600));
    vv = new VisualizationViewer<String, Integer>(layout, new Dimension(600, 600));
    vv.setBackground(Color.white);
    vv.getRenderContext().setEdgeShapeTransformer(new EdgeShape.Line());
    vv.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
    vv.getRenderContext().setVertexShapeTransformer(new ClusterVertexShapeFunction());
    // add a listener for ToolTips
    vv.setVertexToolTipTransformer(new ToStringLabeller());
    vv.getRenderContext().setArrowFillPaintTransformer(new ConstantTransformer(Color.lightGray));
    rings = new Rings();

    Container content = getContentPane();
    final GraphZoomScrollPane panel = new GraphZoomScrollPane(vv);
    content.add(panel);

    final DefaultModalGraphMouse graphMouse = new DefaultModalGraphMouse();

    vv.setGraphMouse(graphMouse);

    JComboBox modeBox = graphMouse.getModeComboBox();
    modeBox.addItemListener(graphMouse.getModeListener());
    graphMouse.setMode(ModalGraphMouse.Mode.TRANSFORMING);

    final ScalingControl scaler = new CrossoverScalingControl();

    JButton plus = new JButton("+");
    plus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1.1f, vv.getCenter());
        }
    });
    JButton minus = new JButton("-");
    minus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1 / 1.1f, vv.getCenter());
        }
    });

    JToggleButton radial = new JToggleButton("Radial");
    radial.addItemListener(new ItemListener() {

        public void itemStateChanged(ItemEvent e) {
            if (e.getStateChange() == ItemEvent.SELECTED) {
                //               layout.setRadial(true);
                vv.setGraphLayout(radialLayout);
                vv.getRenderContext().getMultiLayerTransformer().setToIdentity();
                vv.addPreRenderPaintable(rings);
            } else {
                //               layout.setRadial(false);
                vv.setGraphLayout(layout);
                vv.getRenderContext().getMultiLayerTransformer().setToIdentity();
                vv.removePreRenderPaintable(rings);
            }
            vv.repaint();
        }
    });

    JButton collapse = new JButton("Collapse");
    collapse.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
            Collection picked = new HashSet(vv.getPickedVertexState().getPicked());
            if (picked.size() == 1) {
                Object root = picked.iterator().next();
                Forest inGraph = (Forest) layout.getGraph();

                try {
                    collapser.collapse(vv.getGraphLayout(), inGraph, root);
                } catch (InstantiationException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IllegalAccessException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

                vv.getPickedVertexState().clear();
                vv.repaint();
            }
        }
    });

    JButton expand = new JButton("Expand");
    expand.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
            Collection picked = vv.getPickedVertexState().getPicked();
            for (Object v : picked) {
                if (v instanceof Forest) {
                    Forest inGraph = (Forest) layout.getGraph();
                    collapser.expand(inGraph, (Forest) v);
                }
                vv.getPickedVertexState().clear();
                vv.repaint();
            }
        }
    });

    JPanel scaleGrid = new JPanel(new GridLayout(1, 0));
    scaleGrid.setBorder(BorderFactory.createTitledBorder("Zoom"));

    JPanel controls = new JPanel();
    scaleGrid.add(plus);
    scaleGrid.add(minus);
    controls.add(radial);
    controls.add(scaleGrid);
    controls.add(modeBox);
    controls.add(collapse);
    controls.add(expand);
    content.add(controls, BorderLayout.SOUTH);
}

From source file:demos.TreeCollapse.java

@SuppressWarnings("unchecked")
public TreeCollapse() {

    // create a simple graph for the demo
    graph = new DelegateForest<String, Integer>();

    createTree();/*from   w ww .j av a  2  s .  co  m*/

    layout = new TreeLayout<String, Integer>(graph);
    collapser = new TreeCollapser();

    radialLayout = new RadialTreeLayout<String, Integer>(graph);
    radialLayout.setSize(new Dimension(600, 600));
    vv = new VisualizationViewer<String, Integer>(layout, new Dimension(600, 600));
    vv.setBackground(Color.white);
    vv.getRenderContext().setEdgeShapeTransformer(new EdgeShape.Line());
    vv.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
    vv.getRenderContext().setVertexShapeTransformer(new ClusterVertexShapeFunction());
    // add a listener for ToolTips
    vv.setVertexToolTipTransformer(new ToStringLabeller());
    vv.getRenderContext().setArrowFillPaintTransformer(new ConstantTransformer(Color.lightGray));
    rings = new Rings();

    Container content = getContentPane();
    final GraphZoomScrollPane panel = new GraphZoomScrollPane(vv);
    content.add(panel);

    final DefaultModalGraphMouse graphMouse = new DefaultModalGraphMouse();

    vv.setGraphMouse(graphMouse);

    JComboBox modeBox = graphMouse.getModeComboBox();
    modeBox.addItemListener(graphMouse.getModeListener());
    graphMouse.setMode(ModalGraphMouse.Mode.TRANSFORMING);

    final ScalingControl scaler = new CrossoverScalingControl();

    JButton plus = new JButton("+");
    plus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1.1f, vv.getCenter());
        }
    });
    JButton minus = new JButton("-");
    minus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1 / 1.1f, vv.getCenter());
        }
    });

    JToggleButton radial = new JToggleButton("Radial");
    radial.addItemListener(new ItemListener() {

        public void itemStateChanged(ItemEvent e) {
            if (e.getStateChange() == ItemEvent.SELECTED) {
                //               layout.setRadial(true);
                vv.setGraphLayout(radialLayout);
                vv.getRenderContext().getMultiLayerTransformer().setToIdentity();
                vv.addPreRenderPaintable(rings);
            } else {
                //               layout.setRadial(false);
                vv.setGraphLayout(layout);
                vv.getRenderContext().getMultiLayerTransformer().setToIdentity();
                vv.removePreRenderPaintable(rings);
            }
            vv.repaint();
        }
    });

    JButton collapse = new JButton("Collapse");
    collapse.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
            Collection<?> picked = new HashSet<Object>(vv.getPickedVertexState().getPicked());
            if (picked.size() == 1) {
                Object root = picked.iterator().next();
                Forest<?, ?> inGraph = (Forest<?, ?>) layout.getGraph();

                try {
                    collapser.collapse(vv.getGraphLayout(), inGraph, root);
                } catch (InstantiationException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IllegalAccessException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

                vv.getPickedVertexState().clear();
                vv.repaint();
            }
        }
    });

    JButton expand = new JButton("Expand");
    expand.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
            Collection picked = vv.getPickedVertexState().getPicked();
            for (Object v : picked) {
                if (v instanceof Forest) {
                    Forest inGraph = (Forest) layout.getGraph();
                    collapser.expand(inGraph, (Forest) v);
                }
                vv.getPickedVertexState().clear();
                vv.repaint();
            }
        }
    });

    JPanel scaleGrid = new JPanel(new GridLayout(1, 0));
    scaleGrid.setBorder(BorderFactory.createTitledBorder("Zoom"));

    JPanel controls = new JPanel();
    scaleGrid.add(plus);
    scaleGrid.add(minus);
    controls.add(radial);
    controls.add(scaleGrid);
    controls.add(modeBox);
    controls.add(collapse);
    controls.add(expand);
    content.add(controls, BorderLayout.SOUTH);
}

From source file:zodicSign.treeLayout.java

@SuppressWarnings("unchecked")
public treeLayout() {

    // create a simple graph for the demo
    graph = new DelegateForest<String, Integer>();

    createTree();// w w  w.j  a va 2 s  .  c om

    layout = new TreeLayout<String, Integer>(graph);
    collapser = new TreeCollapser();

    radialLayout = new RadialTreeLayout<String, Integer>(graph);
    radialLayout.setSize(new Dimension(600, 600));
    vv = new VisualizationViewer<String, Integer>(layout, new Dimension(600, 600));
    vv.setBackground(Color.white);
    vv.getRenderContext().setEdgeShapeTransformer(new EdgeShape.Line());
    vv.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
    vv.getRenderContext().setVertexShapeTransformer(new ClusterVertexShapeFunction());
    // add a listener for ToolTips
    vv.setVertexToolTipTransformer(new ToStringLabeller());
    vv.getRenderContext().setArrowFillPaintTransformer(new ConstantTransformer(Color.lightGray));
    rings = new Rings();

    Container content = getContentPane();
    final GraphZoomScrollPane panel = new GraphZoomScrollPane(vv);
    content.add(panel);

    final DefaultModalGraphMouse graphMouse = new DefaultModalGraphMouse();

    vv.setGraphMouse(graphMouse);

    JComboBox modeBox = graphMouse.getModeComboBox();
    modeBox.addItemListener(graphMouse.getModeListener());
    graphMouse.setMode(ModalGraphMouse.Mode.TRANSFORMING);

    final ScalingControl scaler = new CrossoverScalingControl();

    JButton plus = new JButton("+");
    plus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1.1f, vv.getCenter());
        }
    });
    JButton minus = new JButton("-");
    minus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1 / 1.1f, vv.getCenter());
        }
    });

    JToggleButton radial = new JToggleButton("Radial");
    radial.addItemListener(new ItemListener() {

        public void itemStateChanged(ItemEvent e) {
            if (e.getStateChange() == ItemEvent.SELECTED) {
                //               layout.setRadial(true);
                vv.setGraphLayout(radialLayout);
                vv.getRenderContext().getMultiLayerTransformer().setToIdentity();
                vv.addPreRenderPaintable(rings);
            } else {
                //               layout.setRadial(false);
                vv.setGraphLayout(layout);
                vv.getRenderContext().getMultiLayerTransformer().setToIdentity();
                vv.removePreRenderPaintable(rings);
            }
            vv.repaint();
        }
    });

    JButton collapse = new JButton("Collapse");
    collapse.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
            Collection picked = new HashSet(vv.getPickedVertexState().getPicked());
            if (picked.size() == 1) {
                Object root = picked.iterator().next();
                Forest inGraph = (Forest) layout.getGraph();

                try {
                    collapser.collapse(vv.getGraphLayout(), inGraph, root);
                } catch (InstantiationException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IllegalAccessException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

                vv.getPickedVertexState().clear();
                vv.repaint();
            }
        }
    });

    JButton expand = new JButton("Expand");
    expand.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
            Collection picked = vv.getPickedVertexState().getPicked();
            for (Object v : picked) {
                if (v instanceof Forest) {
                    Forest inGraph = (Forest) layout.getGraph();
                    collapser.expand(inGraph, (Forest) v);
                }
                vv.getPickedVertexState().clear();
                vv.repaint();
            }
        }
    });

    JPanel scaleGrid = new JPanel(new GridLayout(1, 0));
    scaleGrid.setBorder(BorderFactory.createTitledBorder("Zoom"));

    JPanel controls = new JPanel();
    scaleGrid.add(plus);
    scaleGrid.add(minus);
    controls.add(radial);
    controls.add(scaleGrid);
    controls.add(modeBox);
    controls.add(collapse);
    controls.add(expand);
    content.add(controls, BorderLayout.SOUTH);
}