ScrollableListSelectionDialog.java
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|---|---|---|
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edu.rice.cs.util.swing |
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DrJava |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| EXEC_COMMENTS | Comments in executable code |  |
| SIZE | Size of the file in bytes | |
| DECL_COMMENTS | Comments in declarations | |
| COMMENTS | Comment lines | |
| DOC_COMMENT | Number of javadoc comment lines | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LINES | Number of lines in the source file | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| EXITS | Procedure exits | |
| ELOC | Effective lines of code | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0138 | JAVA0138 N parameters defined for method (maximum: M) | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| LOC | Lines of code | |
| JAVA0018 | JAVA0018 Method name does not have required form | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| BLOCKS | Number of blocks | |
| OPERANDS | Number of operands | |
| LOGICAL_LINES | Number of statements | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| JAVA0077 | JAVA0077 Private field not used in declaring class | |
| COMPARISONS | Number of comparison operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| BLOCK_COMMENT | Number of block comment lines | |
| RETURNS | Number of return points from functions | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0076 | JAVA0076 Use of magic number | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| NEST_DEPTH | Maximum nesting depth | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
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*
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package edu.rice.cs.util.swing;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.table.AbstractTableModel;
/**
* <p>The ScrollableListSelectionDialog is a popup dialog with a message
* and a scrollable list of items. Each item may be either selected or
* unselected. A ScrollableListSelectionDialog should be used when
* an operation needs to act on a variable number of items, for
* example, when saving modified files.</p>
*
* <p>The message (also know as the leader text) is displayed above the
* items with an optional icon. The items are displayed in a scrollable
* table. A column of checkboxes allows selection of the items. Buttons
* are added below the list of items.</p>
*
* <p>This dialog is somewhat styled after
* {@link javax.swing.JOptionPane} and uses the message-type constants
* from JOptionPane.</p>
*
* @author Chris Warrington
* @version $Id$
* @since 2007-04-08
*/
public class ScrollableListSelectionDialog extends JDialog {
/** A enumeration of the various selection states.
*/
public enum SelectionState {
/** Indicates that an item is selected. */
SELECTED,
/** Indicates that an item is not selected. */
UNSELECTED
};
/** The default width for this dialog. */
private static final int DEFAULT_WIDTH = 400;
/** The default height for this dialog. */
private static final int DEFAULT_HEIGHT = 450;
/** The ratio of the screen width to use by default. */
private static final double WIDTH_RATIO = .75;
/** The ratio of the screen height to use by default. */
private static final double HEIGHT_RATIO = .50;
/** The table displaying the items. */
protected final JTable table;
/** The AbstractTableModel backing the table. */
protected final AbstractTableModel tableModel;
/** The number of columns in the table. */
private static final int NUM_COLUMNS = 2;
/** The column index of the checkboxes column. */
private static final int CHECKBOXES_COLUMN_INDEX = 0;
/** The column index of the strings column. */
private static final int STRINGS_COLUMN_INDEX = 1;
/** The items in the table. */
protected final Vector<String> dataAsStrings;
/** The selected items in the table. This Vector maps to
* _dataAsStrings by index. This value may be accessed by multiple
* threads. Threads wishing to access it should acquire its
* intrinsic lock. */
protected final Vector<Boolean> selectedItems;
/** <p>Creates a new ScrollableListSelectionDialog with the given
* title, leader text, and items. The list of items is used to
* construct an internal string list that is not backed by the original
* list. Changes made to the list or items after dialog construction
* will not be reflected in the dialog.</p>
*
* <p>The default sizing, message type, and icon are used. All the
* items are selected by default.</p>
*
* @param owner The frame that owns this dialog. May be {@code null}.
* @param dialogTitle The text to use as the dialog title.
* @param leaderText Text to display before the list of items.
* @param listItems The items to display in the list.
* @param itemDescription A textual description of the items. This is used as the column heading for the items.
*
* @throws IllegalArgumentException if {@code listItems} is {@code null.}
*/
public ScrollableListSelectionDialog(final Frame owner,
final String dialogTitle,
final String leaderText,
final Collection<?> listItems,
final String itemDescription) {
this(owner, dialogTitle, leaderText, listItems, itemDescription, SelectionState.SELECTED, JOptionPane.PLAIN_MESSAGE);
}
/** <p>Creates a new ScrollableListSelectionDialog with the given
* title, leader text, items, and message type. The list of items is
* used to construct an internal string list that is not backed by the
* original list. Changes made to the list or items after dialog
* construction will not be reflected in the dialog.</p>
*
* <p>The message type must be one of the message types from
* {@link javax.swing.JOptionPane}. The message type controlls which
* default icon is used.</p>
*
* <p>The default sizing and icon are used.</p>
*
* @param owner The frame that owns this dialog. May be {@code null}.
* @param dialogTitle The text to use as the dialog title.
* @param leaderText Text to display before the list of items.
* @param listItems The items to display in the list.
* @param itemDescription A textual description of the items. This is used as the column heading for the items.
* @param defaultSelection The default selection state (selected or unselected) for the items.
* @param messageType The type of dialog message.
*
* @throws IllegalArgumentException if {@code listItems} is {@code null.}
* @throws IllegalArgumentException if the message type is unknown or {@code listItems} is {@code null.}
*/
public ScrollableListSelectionDialog(final Frame owner,
final String dialogTitle,
final String leaderText,
final Collection<?> listItems,
final String itemDescription,
final SelectionState defaultSelection,
final int messageType) {
this(owner,
dialogTitle,
leaderText,
listItems,
itemDescription,
defaultSelection,
messageType,
DEFAULT_WIDTH,
DEFAULT_HEIGHT,
null,
true);
}
/** <p>Creates a new ScrollableListSelectionDialog with the given
* title, leader text, items, message type, width, height, and icon.
* The list of items is used to construct an internal string list that
* is not backed by the original list. Changes made to the list or
* items after dialog construction will not be reflected in the
* dialog.</p>
*
* <p>The message type must be one of the message types from
* {@link javax.swing.JOptionPane}. The message type controlls which
* default icon is used. If {@code icon} is non-null, it is used
* instead of the default icon.</p>
*
* @param owner The frame that owns this dialog. May be {@code null}.
* @param dialogTitle The text to use as the dialog title.
* @param leaderText Text to display before the list of items.
* @param listItems The items to display in the list.
* @param itemDescription A textual description of the items. This is used as the column heading for the items.
* @param defaultSelection The default selection state (selected or unselected) for the items.
* @param messageType The type of dialog message.
* @param width The width of the dialog box.
* @param height The height of the dialog box.
* @param icon The icon to display. May be {@code null}.
*
* @throws IllegalArgumentException if {@code listItems} is {@code null.}
* @throws IllegalArgumentException if the message type is unknown or {@code listItems} is {@code null.}
*/
public ScrollableListSelectionDialog(final Frame owner,
final String dialogTitle,
final String leaderText,
final Collection<?> listItems,
final String itemDescription,
final SelectionState defaultSelection,
final int messageType,
final int width,
final int height,
final Icon icon) {
this(owner,
dialogTitle,
leaderText,
listItems,
itemDescription,
defaultSelection,
messageType,
width,
height,
icon,
false);
}
/** <p>Creates a new ScrollableListSelectionDialog with the given
* title, leader text, items, message type, width, height, and icon.
* The list of items is used to construct an internal string list that
* is not backed by the original list. Changes made to the list or
* items after dialog construction will not be reflected in the
* dialog.</p>
*
* <p>The message type must be one of the message types from
* {@link javax.swing.JOptionPane}. The message type controlls which
* default icon is used. If {@code icon} is non-null, it is used
* instead of the default icon.</p>
*
* @param owner The frame that owns this dialog. May be {@code null}.
* @param dialogTitle The text to use as the dialog title.
* @param leaderText Text to display before the list of items.
* @param listItems The items to display in the list.
* @param itemDescription A textual description of the items. This is used as the column heading for the items.
* @param defaultSelection The default selection state (selected or unselected) for the items.
* @param messageType The type of dialog message.
* @param width The width of the dialog box.
* @param height The height of the dialog box.
* @param icon The icon to display. May be {@code null}.
* @param fitToScreen If {@code true}, the width and height of the dialog will be calculated using the screen
* dimensions, {@link #WIDTH_RATIO}, and {@link #HEIGHT_RATIO}. If {@code false}, the provided width and
* height will be used.
* @throws IllegalArgumentException if {@code listItems} is {@code null.}
* @throws IllegalArgumentException if the message type is unknown or {@code listItems} is {@code null.}
*/
private ScrollableListSelectionDialog(final Frame owner,
final String dialogTitle,
final String leaderText,
final Collection<?> listItems,
final String itemDescription,
final SelectionState defaultSelection,
final int messageType,
final int width,
final int height,
final Icon icon,
final boolean fitToScreen) {
super(owner, dialogTitle, true);
if (!_isknownMessageType(messageType)) {
throw new IllegalArgumentException("The message type \"" + messageType + "\" is unknown");
}
if (listItems == null) {
throw new IllegalArgumentException("listItems cannot be null");
}
/* create the leader text panel */
JLabel dialogIconLabel = null;
if (icon != null) {
//use the user-provided icon
dialogIconLabel = new JLabel(icon);
} else {
//lookup the message-dependent icon
Icon messageIcon = _getIcon(messageType);
if (messageIcon != null) {
dialogIconLabel = new JLabel(messageIcon);
}
}
final JPanel leaderPanel = new JPanel();
final JLabel leaderLabel = new JLabel(leaderText);
leaderPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
if (dialogIconLabel != null) {
leaderPanel.add(dialogIconLabel);
}
leaderPanel.add(leaderLabel);
/* create the table */
//copy the items string representations into a vector
dataAsStrings = new Vector<String>(listItems.size());
for (Object obj : listItems) {
if (obj != null) {
final String objAsString = obj.toString();
dataAsStrings.add(objAsString);
}
}
dataAsStrings.trimToSize();
final int numItems = dataAsStrings.size();
selectedItems = new Vector<Boolean>(numItems);
synchronized(selectedItems) {
for (int i = 0; i < numItems; ++i) {
selectedItems.add(i, defaultSelection == SelectionState.SELECTED);
}
selectedItems.trimToSize();
}
assert selectedItems.size() == dataAsStrings.size();
tableModel = new AbstractTableModel() {
//@Override - uncomment when we start compiling with Java 6
public int getRowCount() {
return numItems;
}
//@Override - uncomment when we start compiling with Java 6
public int getColumnCount() {
return NUM_COLUMNS;
}
//@Override - uncomment when we start compiling with Java 6
public Object getValueAt(int row, int column) {
if (column == CHECKBOXES_COLUMN_INDEX) {
assert row >= 0;
assert row < numItems;
synchronized(selectedItems) {
return selectedItems.get(row);
}
} else if (column == STRINGS_COLUMN_INDEX) {
assert row >= 0;
assert row < numItems;
return dataAsStrings.get(row);
} else {
assert false;
return null;
}
}
@Override
public String getColumnName(int column) {
if (column == CHECKBOXES_COLUMN_INDEX) {
return "";
} else if (column == STRINGS_COLUMN_INDEX) {
return itemDescription;
} else {
assert false;
return "";
}
}
@Override
public Class<?> getColumnClass(final int columnIndex) {
if (columnIndex == CHECKBOXES_COLUMN_INDEX) {
return Boolean.class;
} else if (columnIndex == STRINGS_COLUMN_INDEX) {
return String.class;
} else {
assert false;
return Object.class;
}
}
@Override
public boolean isCellEditable(final int rowIndex, final int columnIndex) {
return columnIndex == CHECKBOXES_COLUMN_INDEX; //only checkboxes are editable
}
@Override
public void setValueAt(final Object newValue, final int rowIndex, final int columnIndex) {
assert columnIndex == CHECKBOXES_COLUMN_INDEX;
assert rowIndex >= 0;
assert rowIndex < numItems;
assert newValue instanceof Boolean;
final Boolean booleanValue = (Boolean)newValue;
synchronized(selectedItems) {
selectedItems.set(rowIndex, booleanValue);
}
}
};
table = new JTable(tableModel);
/*
* this listener enabled clicking in the string column to update the
* checkbox.
*/
table.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(final MouseEvent e) {
final Point clickPoint = e.getPoint();
// which column was clicked on
final int clickColumn = table.columnAtPoint(clickPoint);
if (clickColumn == STRINGS_COLUMN_INDEX) {
//it was the strings column, so update the check status of the row
//Swing does not do this automatically
final int clickRow = table.rowAtPoint(clickPoint);
if (clickRow >= 0 && clickRow < numItems) {
synchronized(selectedItems) {
final boolean currentValue = selectedItems.get(clickRow);
final boolean newValue = !currentValue;
selectedItems.set(clickRow, newValue);
/* We are deliberately holding on to the lock while the
* listeners are notified. This, in theory, speeds up the
* listeners because they don't have to re-acquire the
* lock. Because the internals of Swing are unknown, the
* lock may need to be released before the listeners are
* notified. Only time will tell.
*
* PS: If it turns out that holding the lock during
* the listener updates is a problem, modify this comment
* accordingly. Thank you.
*/
tableModel.fireTableCellUpdated(clickRow, CHECKBOXES_COLUMN_INDEX);
}
}
}
}
});
//set the column sizes
table.getColumnModel().getColumn(CHECKBOXES_COLUMN_INDEX).setMinWidth(15);
table.getColumnModel().getColumn(CHECKBOXES_COLUMN_INDEX).setMaxWidth(30);
table.getColumnModel().getColumn(CHECKBOXES_COLUMN_INDEX).setPreferredWidth(20);
table.getColumnModel().getColumn(CHECKBOXES_COLUMN_INDEX).sizeWidthToFit();
//create a scrollable view around the table
final JScrollPane scrollPane = new JScrollPane(table);
/* create the select all/select none panel */
final JPanel selectButtonsPanel = new JPanel();
selectButtonsPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
_addSelectButtons(selectButtonsPanel);
/* create the button panel */
final JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
//allow children to add additional buttons, if overridden
_addButtons(buttonPanel);
/* create the center panel which contains the scroll pane and the
* select all/select none buttons */
final JPanel centerPanel = new JPanel();
centerPanel.setLayout(new BorderLayout());
centerPanel.add(selectButtonsPanel, BorderLayout.NORTH);
centerPanel.add(scrollPane, BorderLayout.CENTER);
/* create the dialog */
final JPanel contentPanel = new JPanel();
contentPanel.setLayout(new BorderLayout(10, 5));
contentPanel.setBorder(BorderFactory.createEmptyBorder(5, 10, 0, 10));
contentPanel.add(leaderPanel, BorderLayout.NORTH);
contentPanel.add(centerPanel, BorderLayout.CENTER);
contentPanel.add(buttonPanel, BorderLayout.SOUTH);
getContentPane().add(contentPanel);
/* calculate the dialog's dimensions */
final Dimension dialogSize = new Dimension();
if (fitToScreen) {
//use the screen dimensions to calculate the dialog's
final Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int screenBasedWidth = (int) (WIDTH_RATIO * screenSize.getWidth());
int screenBasedHeight = (int) (HEIGHT_RATIO * screenSize.getHeight());
dialogSize.setSize(Math.max(DEFAULT_WIDTH, screenBasedWidth),
Math.max(DEFAULT_HEIGHT, screenBasedHeight));
} else {
//use the user-provided dimensions
dialogSize.setSize(width, height);
}
setSize(dialogSize);
}
/** A method to check if they given message type is a know message
* type.
*
* @param messageType The message type to check
* @return {@code true} if the message type is known, {@code false} otherwise
*/
private boolean _isknownMessageType(final int messageType) {
return messageType == JOptionPane.ERROR_MESSAGE ||
messageType == JOptionPane.INFORMATION_MESSAGE ||
messageType == JOptionPane.WARNING_MESSAGE ||
messageType == JOptionPane.QUESTION_MESSAGE ||
messageType == JOptionPane.PLAIN_MESSAGE;
}
/** Lookup the icon associated with the given messageType. The message
* type must be one of the message types from
* {@link javax.swing.JOptionPane}.
*
* @param messageType The message for which the icon is requested.
* @return The message's icon or {@code null} is no icon was found.
*/
private Icon _getIcon(final int messageType) {
assert _isknownMessageType(messageType);
/* The OptionPane.xxxIcon constants were taken from
* javax.swing.plaf.basic.BasicOptionPaneUI, which may changed
* without notice.
*/
if (messageType == JOptionPane.ERROR_MESSAGE) {
return UIManager.getIcon("OptionPane.errorIcon");
} else if (messageType == JOptionPane.INFORMATION_MESSAGE) {
return UIManager.getIcon("OptionPane.informationIcon");
} else if (messageType == JOptionPane.WARNING_MESSAGE) {
return UIManager.getIcon("OptionPane.warningIcon");
} else if (messageType == JOptionPane.QUESTION_MESSAGE) {
return UIManager.getIcon("OptionPane.questionIcon");
} else if (messageType == JOptionPane.PLAIN_MESSAGE) {
return null;
} else {
//should never get here
assert false;
}
return null;
}
/** Adds the "Select All" and "Select None" buttons
* to the given panel.
*
* @param selectButtonsPanel The panel that should contain the buttons.
*/
private void _addSelectButtons(final JPanel selectButtonsPanel) {
final JButton selectAllButton = new JButton("Select All");
edu.rice.cs.drjava.platform.PlatformFactory.ONLY.setMnemonic(selectAllButton,KeyEvent.VK_A);
selectAllButton.addActionListener(new SelectAllNoneActionListener(SelectionState.SELECTED));
selectButtonsPanel.add(selectAllButton);
final JButton selectNoneButton = new JButton("Select None");
edu.rice.cs.drjava.platform.PlatformFactory.ONLY.setMnemonic(selectNoneButton,KeyEvent.VK_N);
selectNoneButton.addActionListener(new SelectAllNoneActionListener(SelectionState.UNSELECTED));
selectButtonsPanel.add(selectNoneButton);
}
/** Adds buttons to the bottom of the dialog. By default, a single
* "OK" button is added that calls {@link #closeDialog}. It
* is also set as the dialog's default button.
*
* Inheritors should feel free the change settings of the panel such
* as the layout manager. However, no guarantees are made that every
* change will work with every version of this class.
*
* @param buttonPanel The JPanel that should contain the buttons.
*/
protected void _addButtons(final JPanel buttonPanel) {
final JButton okButton = new JButton("OK");
okButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent notUsed) {
closeDialog();
}
});
buttonPanel.add(okButton);
getRootPane().setDefaultButton(okButton);
}
/** Shows the dialog.
*/
public void showDialog() {
pack();
setVisible(true);
}
/** Should be called when the dialog should be closed. The default implementation
* simply hides the dialog.
*/
protected void closeDialog() {
setVisible(false);
}
/** Returns the string representation of those items that are
* currently selected. The items will be in the same relative order
* as they were at construction time. The resultant collection may be
* empty. The resultant collection is unmodifiable. The resultant
* collection is simply a snapshot (i.e., It will not be updated as
* more items are selected.). This method may be called from
* non-event queue threads.
*
* @return The currently selected items.
*/
public java.util.List<String> selectedItems() {
final java.util.List<String> results = new ArrayList<String>();
synchronized(selectedItems) {
/* This entire loop is synchronized so that we get a consistent
* view of the selected items. It is also faster.
*/
for (int i = 0; i < dataAsStrings.size(); ++i) {
if (selectedItems.get(i)) {
results.add(dataAsStrings.get(i));
}
}
}
return Collections.unmodifiableList(results);
}
/** An ActionListener that handles the "Select All" and
* "Select None" buttons. It will set the selection state
* of every item to the given selection state.
*/
private class SelectAllNoneActionListener implements ActionListener {
/** The value that the selection state will be set to when this
* listener runs. */
private final boolean _setToValue;
/**
* Creates a new SelectAllNoneActionListener that will set the state
* of every item to the given state.
*
* @param setToState The state to set all the items to.
*/
public SelectAllNoneActionListener(SelectionState setToState) {
_setToValue = setToState == SelectionState.SELECTED;
}
/**
* The code that runs in response to the button's action.
* This is the code that actually sets the selection state of the
* items.
*
* @param notUsed Not used.
*/
public void actionPerformed(ActionEvent notUsed) {
/* See comment in the table's mouse listener for a discussion
* about the duration of the lock.
*/
synchronized(selectedItems) {
for (int i = 0; i < selectedItems.size(); ++i) {
selectedItems.set(i, _setToValue);
}
tableModel.fireTableRowsUpdated(0, Math.max(0, selectedItems.size() - 1));
}
}
}
/** A simple main method for testing purposes.
*
* @param args Not used.
*/
public static void main(String args[]) {
final Collection<String> data = new java.util.ArrayList<String>();
data.add("how");
data.add("now");
data.add("brown");
data.add("cow");
EventQueue.invokeLater(new Runnable() {
public void run() {
ScrollableListSelectionDialog ld =
new ScrollableListSelectionDialog(null, "TITLE", "LEADER", data, "Words", SelectionState.SELECTED,
JOptionPane.ERROR_MESSAGE) {
@Override
protected void closeDialog() {
super.closeDialog();
Collection<String> si = selectedItems();
for (String i : si) {
System.out.println(i);
}
}
};
ld.pack();
ld.setVisible(true);
}
});
}
}
The table below shows all metrics for ScrollableListSelectionDialog.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 63.00 | Number of blocks | |
| BLOCK_COMMENT | 68.00 | Number of block comment lines | |
| COMMENTS | 281.00 | Comment lines | |
| COMMENT_DENSITY | 0.99 | Comment density | |
| COMPARISONS | 43.00 | Number of comparison operators | |
| CYCLOMATIC | 54.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 35.00 | Comments in declarations | |
| DOC_COMMENT | 198.00 | Number of javadoc comment lines | |
| ELOC | 285.00 | Effective lines of code | |
| EXEC_COMMENTS | 23.00 | Comments in executable code | |
| EXITS | 54.00 | Procedure exits | |
| FUNCTIONS | 25.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 71.27 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 90.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 4.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 0.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 3.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 1.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 1.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 1.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 0.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 3.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 0.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 0.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 1.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 1.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 682.00 | Number of lines in the source file | |
| LINE_COMMENT | 15.00 | Number of line comments | |
| LOC | 337.00 | Lines of code | |
| LOGICAL_LINES | 156.00 | Number of statements | |
| LOOPS | 3.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 718.00 | Number of operands | |
| OPERATORS | 1414.00 | Number of operators | |
| PARAMS | 51.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2132.00 | Halstead program length | |
| PROGRAM_VOCAB | 326.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 39.00 | Number of return points from functions | |
| SIZE | 27688.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 272.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 54.00 | Number of unique operators | |
| WHITESPACE | 64.00 | Number of whitespace lines | |