Restructure project to use Maven exclusively and bump to v1.0.1-SNAPSHOT

- Remove legacy Ant build system (build.xml, sources/ directory)
- Migrate to Maven-only build with standard directory structure
- Add comprehensive Maven documentation and JAVA_HOME setup for Fedora
- Update pom.xml with exec plugin and bump version to 1.0.1-SNAPSHOT
- Add CLAUDE.md for development guidance
- Update README.md with detailed build/run/clean instructions

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

7 files changed, 0 insertions, 4537 deletions

diff --git a/sources/simulator/VSCreateTask.java b/sources/simulator/VSCreateTask.java
deleted file mode 100644
index 9a6426b..0000000
--- a/sources/simulator/VSCreateTask.java
+++ /dev/null
@@ -1,179 +0,0 @@
-package simulator;
-
-import core.VSInternalProcess;
-import core.VSTask;
-import events.VSAbstractEvent;
-import events.VSRegisteredEvents;
-import events.internal.VSProtocolEvent;
-
-/**
- * The class VSCreateTask, an object of this class represents how new
- * VSTask objects are to be created using JComboBox selections of the
- * GUI editor..
- *
- * @author Paul C. Buetow
- */
-public class VSCreateTask {
-    /** The event classname. */
-    private String eventClassname;
-
-    /** The create task menu string. */
-    private String menuText;
-
-    /** The protocol classname. */
-    private String protocolClassname;
-
-    /** The shortname. */
-    private String shortname;
-
-    /** The task is a protocol activation. */
-    private boolean isProtocolActivation;
-
-    /** The task is a protocol deactivation. */
-    private boolean isProtocolDeactivation;
-
-    /** The task is a client protocol. */
-    private boolean isClientProtocol;
-
-    /** True, if the task is a client request. false, if the task is a
-     * server request
-     */
-    private boolean isRequest;
-
-    /**
-     * Instantiates a new VSCreateTask object.
-     *
-     * @param menuText the menu text
-     * @param eventClassname the event classname
-     */
-    public VSCreateTask(String menuText, String eventClassname) {
-        this.menuText = menuText;
-        this.eventClassname = eventClassname;
-    }
-
-    /**
-     * Instantiates a new VSCreateTask dummy object.
-     *
-     * @param menuText the menu text
-     */
-    public VSCreateTask(String menuText) {
-        this.menuText = menuText;
-        this.eventClassname = null;
-    }
-
-    /**
-     * Sets if it is  a protocol activation task.
-     *
-     * @param isProtocolActivation true, if it is a protocol activation
-     *	task.
-     */
-    public void isProtocolActivation(boolean isProtocolActivation) {
-        this.isProtocolActivation = isProtocolActivation;
-
-        if (isProtocolActivation)
-            isProtocolDeactivation(false);
-    }
-
-    /**
-     * Sets if it is  a protocol deactivation task.
-     *
-     * @param isProtocolDeactivation true, if it is a protocol deactivation
-     *	task.
-     */
-    public void isProtocolDeactivation(boolean isProtocolDeactivation) {
-        this.isProtocolDeactivation = isProtocolDeactivation;
-
-        if (isProtocolDeactivation)
-            isProtocolActivation(false);
-    }
-
-    /**
-     * Sets if it is a client protocol.
-     *
-     * @param isClientProtocol the is client protocol
-     */
-    public void isClientProtocol(boolean isClientProtocol) {
-        this.isClientProtocol = isClientProtocol;
-    }
-
-    /**
-     * Sets if it is a client request.
-     *
-     * @param isRequest the is client request
-     */
-    public void isRequest(boolean isRequest) {
-        this.isRequest = isRequest;
-    }
-
-    /**
-     * Checks if it is a dummy object..
-     *
-     * @return true, if dummy
-     */
-    public boolean isDummy() {
-        return eventClassname == null;
-    }
-
-    /**
-     * Sets the protocol classname.
-     *
-     * @param protocolClassname the protocol classname
-     */
-    public void setProtocolClassname(String protocolClassname) {
-        this.protocolClassname = protocolClassname;
-    }
-
-    /**
-     * Sets the shortname.
-     *
-     * @param shortname the shortname
-     */
-    public void setShortname(String shortname) {
-        this.shortname = shortname;
-    }
-
-    /**
-     * Gets the create tasks menu text.
-     *
-     * @return The text
-     */
-    public String getMenuText() {
-        return menuText;
-    }
-
-    /**
-     * Creates the task.
-     *
-     * @param process the process
-     * @param time the time
-     * @param localTimedTask the local timed task
-     *
-     * @return the new task
-     */
-    public VSTask createTask(VSInternalProcess process, long time,
-                             boolean localTimedTask) {
-        VSAbstractEvent event = null;
-
-        if (isRequest) {
-            event = process.getProtocolObject(eventClassname);
-
-        } else {
-            event = VSRegisteredEvents.createEventInstanceByClassname(
-                        eventClassname, process);
-        }
-
-        event.init(process);
-        if (shortname != null)
-            event.setShortname(shortname);
-
-        if (isProtocolActivation || isProtocolDeactivation) {
-            VSProtocolEvent protocolEvent = (VSProtocolEvent) event;
-            protocolEvent.setProtocolClassname(protocolClassname);
-            protocolEvent.isProtocolActivation(isProtocolActivation);
-            protocolEvent.isClientProtocol(isClientProtocol);
-        }
-
-        return new VSTask(time, process, event, localTimedTask);
-    }
-}
-
diff --git a/sources/simulator/VSLogging.java b/sources/simulator/VSLogging.java
deleted file mode 100644
index 66cb563..0000000
--- a/sources/simulator/VSLogging.java
+++ /dev/null
@@ -1,201 +0,0 @@
-package simulator;
-
-import java.util.ArrayList;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import javax.swing.JTextArea;
-
-import utils.VSTools;
-
-/**
- * The class VSLogging, an object of this class is responsible for the loging
- * of text messages into the simulator's loging window.
- *
- * @author Paul C. Buetow
- */
-public class VSLogging {
-    /** The loging area. */
-    private JTextArea logingArea;
-
-    /** The filter text. */
-    private String filterText;
-
-    /** The pause lines. Used for cacheing the loging if the loging is
-     * deactivated for a while
-     */
-    private ArrayList<StringBuffer> pauseLines;
-
-    /** The loging lines. */
-    private ArrayList<StringBuffer> logingLines;
-
-    /** The simulator canvas. */
-    private VSSimulatorVisualization simulatorVisualization;
-
-    /** The loging messages are filtered. */
-    private boolean isFiltered;
-
-    /** The loging is paused. */
-    private boolean isPaused;
-
-    /** The filter pattern. */
-    private Pattern filterPattern;
-
-    /**
-     * Instantiates a new VSLogging object.
-     */
-    public VSLogging() {
-        logingArea = new JTextArea(0, 0);
-        logingArea.setEditable(false);
-        logingArea.setLineWrap(true);
-        logingArea.setWrapStyleWord(true);
-        logingLines = new ArrayList<StringBuffer>();
-        pauseLines = new ArrayList<StringBuffer>();
-        filterText = "";
-    }
-
-    /**
-     * Sets the simulator canvas.
-     *
-     * @param sv the simulator canvas
-     */
-    public void setSimulatorCanvas(VSSimulatorVisualization sv) {
-        this.simulatorVisualization = sv;
-    }
-
-    /**
-     * Gets the loging area.
-     *
-     * @return the loging area
-     */
-    public JTextArea getLoggingArea() {
-        return logingArea;
-    }
-
-    /**
-     * Loggs a message using the global time.
-     *
-     * @param message the message
-     */
-    public void log(String message) {
-        if (simulatorVisualization == null)
-            log(message, 0);
-        else
-            log(message, simulatorVisualization.getTime());
-    }
-
-    /**
-     * Loggs a message using the specified time.
-     *
-     * @param message the message
-     * @param time the time
-     */
-    public synchronized void log(String message, long time) {
-        StringBuffer buffer = new StringBuffer();
-        buffer.append(VSTools.getTimeString(time));
-        buffer.append(": ");
-        buffer.append(message);
-
-        if (isPaused)
-            pauseLines.add(buffer);
-        else
-            logFiltered(buffer);
-    }
-
-    /**
-     * Sets if the loging is paused.
-     *
-     * @param isPaused true, if the loging is paused
-     */
-    public synchronized void isPaused(boolean isPaused) {
-        this.isPaused = isPaused;
-
-        if (!isPaused) {
-            for (StringBuffer buffer : pauseLines)
-                logFiltered(buffer);
-
-            pauseLines.clear();
-        }
-    }
-
-    /**
-     * If the loging is filtered, it's using the pattern matching.
-     *
-     * @param buffer the loging buffer to filter
-     */
-    private void logFiltered(StringBuffer buffer) {
-        logingLines.add(buffer);
-        if (!isFiltered) {
-            logingArea.append(buffer.toString()+"\n");
-            logingArea.setCaretPosition(
-                logingArea.getDocument().getLength());
-
-        } else if (filterPattern != null &&
-                   filterPattern.matcher(buffer).find()) {
-            logingArea.append(buffer.toString()+"\n");
-            logingArea.setCaretPosition(
-                logingArea.getDocument().getLength());
-        }
-    }
-
-    /**
-     * Checks if the loging is filtered.
-     *
-     * @param isFiltered true, if the loging is filtered
-     */
-    public synchronized void isFiltered(boolean isFiltered) {
-        this.isFiltered = isFiltered;
-
-        if (!isFiltered)
-            setFilterText("");
-        else
-            filter();
-    }
-
-    /**
-     * Sets the filter text.
-     *
-     * @param filterText the new filter text
-     */
-    public synchronized void setFilterText(String filterText) {
-        this.filterText = filterText;
-        filter();
-    }
-
-    /**
-     * Clears the loging.
-     */
-    public synchronized void clear() {
-        logingLines.clear();
-        pauseLines.clear();
-        logingArea.setText("");
-    }
-
-    /**
-     * Filters the loging.
-     */
-    private void filter() {
-        try {
-            filterPattern = Pattern.compile(filterText);
-            StringBuffer buffer = new StringBuffer();
-
-            for (StringBuffer line : logingLines) {
-                if (isFiltered) {
-                    Matcher matcher = filterPattern.matcher(line);
-                    if (matcher.find()) {
-                        buffer.append(line);
-                        buffer.append("\n");
-                    }
-                } else {
-                    buffer.append(line);
-                    buffer.append("\n");
-                }
-            }
-            logingArea.setText(buffer.toString());
-
-        } catch (Exception e) {
-            filterPattern = null;
-            logingArea.setText("");
-        }
-    }
-}
diff --git a/sources/simulator/VSMain.java b/sources/simulator/VSMain.java
deleted file mode 100644
index 34a21b7..0000000
--- a/sources/simulator/VSMain.java
+++ /dev/null
@@ -1,70 +0,0 @@
-package simulator;
-
-import java.awt.Component;
-import java.util.Locale;
-
-import javax.swing.UIManager;
-
-import events.VSRegisteredEvents;
-import prefs.VSDefaultPrefs;
-import prefs.VSPrefs;
-
-/**
- * The class VSMain. This class contains the static main method. The simulator
- * starts here!
- *
- * @author Paul C. Buetow
- */
-public class VSMain {
-    /** The global preferences */
-    public static VSPrefs prefs;
-
-    /**
-     * Instantiates a new VSMain object.
-     *
-     * @param prefs the prefs
-     */
-    public VSMain(VSPrefs prefs) {
-        init(prefs, null);
-    }
-
-    /**
-     * Instantiates a new VSMain object
-     *
-     * @param prefs the prefs
-     * @param relativeTo the component to open the window relative to
-     */
-    public VSMain(VSPrefs prefs, Component relativeTo) {
-        init(prefs, relativeTo);
-    }
-
-    /**
-     * Inits the VSMain object.
-     *
-     * @param prefs the prefs
-     * @param relativeTo the component to open the window relative to
-     */
-    private void init(VSPrefs prefs, Component relativeTo) {
-        //VSSimulatorFrame simulatorFrame =
-        VSMain.prefs = prefs;
-        new VSSimulatorFrame(prefs, relativeTo);
-    }
-
-    /**
-     * The main method.
-     *
-     * @param args the arguments
-     */
-    public static void main(String[] args) {
-        try {
-            UIManager.setLookAndFeel(
-                UIManager.getCrossPlatformLookAndFeelClassName());
-        } catch (Exception e) { }
-
-        Locale.setDefault(Locale.GERMAN);
-        javax.swing.JPopupMenu.setDefaultLightWeightPopupEnabled(false);
-        VSPrefs prefs = VSDefaultPrefs.init();
-        VSRegisteredEvents.init(prefs);
-        new VSMain(prefs);
-    }
-}
diff --git a/sources/simulator/VSMenuItemStates.java b/sources/simulator/VSMenuItemStates.java
deleted file mode 100644
index 941dbf5..0000000
--- a/sources/simulator/VSMenuItemStates.java
+++ /dev/null
@@ -1,109 +0,0 @@
-package simulator;
-
-/**
- * The class VSMenuItemStates. Used by the VSSimulator to update the
- * "simulator" bar of the VSSimulatorFrame.
- *
- * @author Paul C. Buetow
- */
-public class VSMenuItemStates {
-    /** The pause state. */
-    private volatile boolean pause;
-
-    /** The replay state. */
-    private volatile boolean replay;
-
-    /** The reset state. */
-    private volatile boolean reset;
-
-    /** The start state. */
-    private volatile boolean start;
-
-    /**
-     * Instantiates a new VSMenuItemStates object.
-     *
-     * @param pause the pause state
-     * @param replay the replay state
-     * @param reset the reset state
-     * @param start the start state
-     */
-    public VSMenuItemStates(boolean pause, boolean replay, boolean reset,
-                            boolean start) {
-        this.pause = pause;
-        this.replay = replay;
-        this.reset = reset;
-        this.start = start;
-    }
-
-    /**
-     * Sets the pause state.
-     *
-     * @param pause the new pause state
-     */
-    public void setPause(boolean pause) {
-        this.pause = pause;
-    }
-
-    /**
-     * Sets the replay state.
-     *
-     * @param replay the new replay state
-     */
-    public void setReplay(boolean replay) {
-        this.replay = replay;
-    }
-
-    /**
-     * Sets the reset state.
-     *
-     * @param reset the new reset state
-     */
-    public void setReset(boolean reset) {
-        this.reset = reset;
-    }
-
-    /**
-     * Sets the start state.
-     *
-     * @param start the new start state
-     */
-    public void setStart(boolean start) {
-        this.start = start;
-    }
-
-    /**
-     * Gets the pause state.
-     *
-     * @return the pause state
-     */
-    public boolean getPause() {
-        return pause;
-    }
-
-    /**
-     * Gets the replay state.
-     *
-     * @return the replay state
-     */
-    public boolean getReplay() {
-        return replay;
-    }
-
-    /**
-     * Gets the reset state.
-     *
-     * @return the reset state
-     */
-    public boolean getReset() {
-        return reset;
-    }
-
-    /**
-     * Gets the start state.
-     *
-     * @return the start state
-     */
-    public boolean getStart() {
-        return start;
-    }
-}
diff --git a/sources/simulator/VSSimulator.java b/sources/simulator/VSSimulator.java
deleted file mode 100644
index 4965a71..0000000
--- a/sources/simulator/VSSimulator.java
+++ /dev/null
@@ -1,1536 +0,0 @@
-package simulator;
-
-import java.awt.BorderLayout;
-import java.awt.Color;
-import java.awt.Component;
-import java.awt.Dimension;
-import java.awt.GridBagLayout;
-import java.awt.GridLayout;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.event.MouseEvent;
-import java.awt.event.MouseListener;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Vector;
-
-import javax.swing.AbstractButton;
-import javax.swing.AbstractCellEditor;
-import javax.swing.BoxLayout;
-import javax.swing.ButtonModel;
-import javax.swing.JButton;
-import javax.swing.JCheckBox;
-import javax.swing.JComboBox;
-import javax.swing.JLabel;
-import javax.swing.JMenuItem;
-import javax.swing.JPanel;
-import javax.swing.JPopupMenu;
-import javax.swing.JScrollPane;
-import javax.swing.JSplitPane;
-import javax.swing.JTabbedPane;
-import javax.swing.JTable;
-import javax.swing.JTextArea;
-import javax.swing.JTextField;
-import javax.swing.ListSelectionModel;
-import javax.swing.SwingUtilities;
-import javax.swing.event.ChangeEvent;
-import javax.swing.event.ChangeListener;
-import javax.swing.event.DocumentEvent;
-import javax.swing.event.DocumentListener;
-import javax.swing.table.AbstractTableModel;
-import javax.swing.table.TableCellEditor;
-import javax.swing.table.TableColumn;
-
-import core.VSInternalProcess;
-import core.VSTask;
-import core.VSTaskManager;
-import events.VSRegisteredEvents;
-import exceptions.VSNegativeNumberException;
-import prefs.VSPrefs;
-import prefs.editors.VSProcessEditor;
-import serialize.VSSerializable;
-import serialize.VSSerialize;
-
-/**
- * The class VSSimulator, an object of this class represents a whole simulator.
- * It may be, that several parallel simulators exist. They are independent
- * fron each other.
- *
- * @author Paul C. Buetow
- */
-public class VSSimulator extends JPanel implements VSSerializable {
-    /** The serial version uid */
-    private static final long serialVersionUID = 1L;
-
-    /** The global text fields. */
-    private ArrayList<String> globalTextFields;
-
-    /** The local text fields. */
-    private ArrayList<String> localTextFields;
-
-    /** The create tasks array list. */
-    private ArrayList<VSCreateTask> createTasks;
-
-    /** The filter active check box. */
-    private JCheckBox filterActiveCheckBox;
-
-    /** The lamport active check box. */
-    private JCheckBox lamportActiveCheckBox;
-
-    /** The vector time active check box. */
-    private JCheckBox vectorTimeActiveCheckBox;
-
-    /** The global pid combo box. */
-    private JComboBox<String> globalPIDComboBox;
-
-    /** The local pid combo box. */
-    private JComboBox<String> localPIDComboBox;
-
-    /** The processes combo box. */
-    private JComboBox<String> processesComboBox;
-
-    /** The local add panel. */
-    private JPanel localAddPanel;
-
-    /** The local panel. */
-    private JPanel localPanel;
-
-    /** The loging panel. */
-    private JPanel logingPanel;
-
-    /** The split pane1. */
-    private JSplitPane splitPane1;
-
-    /** The split pane h. */
-    private JSplitPane splitPaneH;
-
-    /** The split pane v. */
-    private JSplitPane splitPaneV;
-
-    /** The tabbed pane. */
-    private JTabbedPane tabbedPane;
-
-    /** The loging area. */
-    private JTextArea logingArea;
-
-    /** The filter text field. */
-    private JTextField filterTextField;
-
-    /** The global text field. */
-    private JTextField globalTextField;
-
-    /** The local text field. */
-    private JTextField localTextField;
-
-    /** The thread. */
-    private Thread thread;
-
-    /** The loging. */
-    private VSLogging loging;
-
-    /** The menu item states. */
-    private VSMenuItemStates menuItemStates;
-
-    /** The prefs. */
-    private VSPrefs prefs;
-
-    /** The simulator canvas. */
-    private VSSimulatorVisualization simulatorVisualization;
-
-    /** The simulator frame. */
-    private VSSimulatorFrame simulatorFrame;
-
-    /** The task manager. */
-    private VSTaskManager taskManager;
-
-    /** The task manager global model. */
-    private VSTaskManagerTableModel taskManagerGlobalModel;
-
-    /** The task manager local model. */
-    private VSTaskManagerTableModel taskManagerLocalModel;
-
-    /** The task manager global editor. */
-    private VSTaskManagerCellEditor taskManagerGlobalEditor;
-
-    /** The task manager local editor. */
-    private VSTaskManagerCellEditor taskManagerLocalEditor;
-
-    /** The last selected process num. */
-    private int lastSelectedProcessNum;
-
-    /** The last expert state. */
-    private boolean lastExpertState;
-
-    /** The simulator counter. */
-    private static int simulatorCounter;
-
-    /** The simulator num. */
-    private static volatile int simulatorNum;
-
-    /**
-     * The class VSTaskManagerTableModel, an object of this class handles
-     * the task manager's JTable.
-     */
-    private class VSTaskManagerTableModel extends AbstractTableModel
-        implements MouseListener {
-        /** the serial version uid */
-        private static final long serialVersionUID = 1l;
-
-        /** The Constant LOCAL. */
-        public static final boolean LOCAL = true;
-
-        /** The Constant GLOBAL. */
-        public static final boolean GLOBAL = false;
-
-        /** The Constant ALL_PROCESSES. */
-        // public static final boolean ALL_PROCESSES = true;
-
-        /** The Constant ONE_PROCESS. */
-        public static final boolean ONE_PROCESS = false;
-
-        /** The tasks. */
-        private ArrayList<VSTask> tasks;
-
-        /** The column names. */
-        private String columnNames[];
-
-        /** The num columns. */
-        private int numColumns;
-
-        /** The table. */
-        //private JTable table;
-
-        /** The editor. */
-        //private VSTaskManagerCellEditor editor;
-
-        /**
-         * Instantiates a new VSTaskManagerTableModel object
-         *
-         * @param process the process
-         * @param localTask true, if this table manages the local task. false,
-         *	if this table manages the global tasks.
-         */
-        public VSTaskManagerTableModel(VSInternalProcess process,
-                                       boolean localTask) {
-            tasks = new ArrayList<VSTask>();
-            set(process, localTask, ONE_PROCESS);
-            columnNames = new String[3];
-            columnNames[0]= prefs.getString("lang.time") + " (ms)";
-            columnNames[1] = prefs.getString("lang.process.id");
-            columnNames[2] = prefs.getString("lang.event");
-            numColumns = 3;
-        }
-
-        /**
-         * Sets the table.
-         *
-         * @param table the table
-         */
-        public void setTable(JTable table) {
-            /* Maybe needed for future usage */
-            //this.table = table;
-        }
-
-        /**
-         * Sets the editor.
-         *
-         * @param editor the editor
-         */
-        public void setEditor(VSTaskManagerCellEditor editor) {
-            /* Maybe needed for future usage */
-            //this.editor = editor;
-        }
-
-        /**
-         * Sets new values.
-         *
-         * @param process the process
-         * @param localTasks true, if this table manages the local tasks. false
-         *	if this table manages the global tasks.
-         * @param allProcesses true, if this table shows tasks of all processes.
-         *	false, if this table only shows tasks of the specified process.
-         */
-        public void set(VSInternalProcess process, boolean localTasks,
-                        boolean allProcesses) {
-
-            if (allProcesses) {
-                this.tasks = localTasks
-                             ?  taskManager.getLocalTasks()
-                             :  taskManager.getGlobalTasks();
-            } else {
-                this.tasks = localTasks
-                             ?  taskManager.getProcessLocalTasks(process)
-                             :  taskManager.getProcessGlobalTasks(process);
-            }
-
-            Collections.sort(tasks);
-            fireTableDataChanged();
-        }
-
-        /* (non-Javadoc)
-         * @see javax.swing.table.AbstractTableModel#getColumnName(int)
-         */
-        public String getColumnName(int col) {
-            return columnNames[col];
-        }
-
-        /* (non-Javadoc)
-         * @see javax.swing.table.TableModel#getRowCount()
-         */
-        public int getRowCount() {
-            return tasks == null ? 0 : tasks.size();
-        }
-
-        /* (non-Javadoc)
-         * @see javax.swing.table.TableModel#getColumnCount()
-         */
-        public int getColumnCount() {
-            return numColumns;
-        }
-
-        /* (non-Javadoc)
-         * @see javax.swing.table.TableModel#getValueAt(int, int)
-         */
-        public Object getValueAt(int row, int col) {
-            VSTask task = tasks.get(row);
-
-            switch (col) {
-            case 0:
-                return task.getTaskTime();
-            case 1:
-                return task.getProcess().getProcessID();
-            }
-
-            return task.getEvent().getShortname();
-        }
-
-        /* (non-Javadoc)
-         * @see javax.swing.table.AbstractTableModel#isCellEditable(int, int)
-         */
-        public boolean isCellEditable(int row, int col) {
-            if (col == 2)
-                return false;
-
-            return true;
-        }
-
-        /* (non-Javadoc)
-         * @see javax.swing.table.AbstractTableModel#setValueAt(
-         *	java.lang.Object, int, int)
-         */
-        public void setValueAt(Object value, int row, int col) {
-        }
-
-        /**
-         * Adds the task.
-         *
-         * @param task the task
-         */
-        public void addTask(VSTask task) {
-            tasks.add(task);
-            Collections.sort(tasks);
-            fireTableDataChanged();
-        }
-
-        /**
-         * Removes the task at a specified row.
-         *
-         * @param row the row
-         * @return The removed task
-         */
-        public VSTask removeTaskAtRow(int row) {
-            VSTask task = tasks.get(row);
-            tasks.remove(task);
-            taskManager.removeTask(task);
-            fireTableDataChanged();
-            return task;
-        }
-
-        /**
-         * Checks if a specific row exists
-         *
-         * @param row the row
-         * @return True, if the row exists. False, if not
-         */
-        public boolean rowExists(int row) {
-            if (row < 0)
-                return false;
-
-            if (tasks.size() <= row)
-                return false;
-
-            return true;
-        }
-
-        /**
-         * Gets the index of a specific task
-         *
-         * @param task The task
-         * @return The index of the task
-         */
-        public int getIndexOf(VSTask task) {
-            return tasks.indexOf(task);
-        }
-
-        /**
-         * Copies the tasks at a specified rows.
-         *
-         * @param rows the rows
-         */
-        private void copyTasksAtRows(int rows[]) {
-            ArrayList<VSTask> copiedTasks = new ArrayList<VSTask>();
-
-            for (int row : rows)
-                /* Use the copy constructor */
-                copiedTasks.add(new VSTask(tasks.get(row)));
-
-            for (VSTask task : copiedTasks) {
-                taskManager.addTask(task, VSTaskManager.PROGRAMMED);
-                addTask(task);
-            }
-
-            fireTableDataChanged();
-        }
-
-        /* (non-Javadoc)
-         * @see java.awt.event.MouseListener#mouseClicked(
-         *	java.awt.event.MouseEvent)
-         */
-        public void mouseClicked(MouseEvent me) {
-            final JTable source = (JTable) me.getSource();
-            //final int row = source.rowAtPoint(me.getPoint());
-            //final int col = source.columnAtPoint(me.getPoint());
-
-            if (SwingUtilities.isRightMouseButton(me)) {
-                ActionListener actionListener = new ActionListener() {
-                    public void actionPerformed(ActionEvent ae) {
-                        String command = ae.getActionCommand();
-                        int rows[] = source.getSelectedRows();
-
-                        if (command.equals(prefs.getString("lang.remove"))) {
-                            for (int i = rows.length - 1; i >= 0; --i)
-                                removeTaskAtRow(rows[i]);
-
-                        } else if (command.equals(
-                                       prefs.getString("lang.copy"))) {
-                            copyTasksAtRows(rows);
-                        }
-                    }
-                };
-
-                JPopupMenu popup = new JPopupMenu();
-                JMenuItem item = new JMenuItem(prefs.getString("lang.remove"));
-                item.addActionListener(actionListener);
-                popup.add(item);
-
-                item = new JMenuItem(prefs.getString("lang.copy"));
-                item.addActionListener(actionListener);
-                popup.add(item);
-
-                popup.show(me.getComponent(), me.getX(), me.getY());
-            }
-        }
-
-        /* (non-Javadoc)
-         * @see java.awt.event.MouseListener#mouseEntered(
-         *	java.awt.event.MouseEvent)
-         */
-        public void mouseEntered(MouseEvent me) { }
-
-        /* (non-Javadoc)
-         * @see java.awt.event.MouseListener#mouseExited(
-         *	java.awt.event.MouseEvent)
-         */
-        public void mouseExited(MouseEvent me) { }
-
-        /* (non-Javadoc)
-         * @see java.awt.event.MouseListener#mousePressed(
-         *	java.awt.event.MouseEvent)
-         */
-        public void mousePressed(MouseEvent me) { }
-
-        /* (non-Javadoc)
-         * @see java.awt.event.MouseListener#mouseReleased(
-         *	java.awt.event.MouseEvent)
-         */
-        public void mouseReleased(MouseEvent me) { }
-    }
-
-    /**
-     * The class VSTaskManagerCellEditor, an object of this class handles
-     * the task manager's JTable editor
-     */
-    private class VSTaskManagerCellEditor extends AbstractCellEditor
-        implements TableCellEditor {
-        /** the serial version uid */
-        private static final long serialVersionUID = 1L;
-
-        /** The JTable model */
-        private VSTaskManagerTableModel model;
-
-        /**
-         * Instantiates a new VSTaskManagerCellEditor object.
-         *
-         * @param model the model
-         */
-        public VSTaskManagerCellEditor(VSTaskManagerTableModel model) {
-            this.model = model;
-            model.setEditor(this);
-        }
-
-        /**
-         * Stops editing
-         */
-        public void stopEditing() {
-            fireEditingStopped();
-        }
-
-        /**
-        /* (non-Javadoc)
-         * @see javax.swing.table.TableCellEditor#getTableCellEditorComponent(
-         *      javax.swing.JTable, java.lang.Object, boolean, int, int)
-         */
-        public Component getTableCellEditorComponent(final JTable table,
-                Object object,
-                boolean isSelected,
-                final int row,
-                final int col) {
-            switch (col) {
-            case 0:
-                Long val = (Long) model.getValueAt(row, col);
-                final JTextField valField = new JTextField(val.toString());
-                valField.setBackground(Color.WHITE);
-                valField.setBorder(null);
-                valField.addActionListener(new ActionListener() {
-                    private boolean isRed = false;
-                    public void actionPerformed(ActionEvent ae) {
-                        try {
-                            Long val = Long.valueOf(valField.getText());
-                            if (val.longValue() < 0)
-                                throw new VSNegativeNumberException();
-