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diff --git a/VS-Sim-Sources/sources/core/time/VSVectorTime.java b/VS-Sim-Sources/sources/core/time/VSVectorTime.java
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+/*
+ * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * All icons of the icons/ folder are 	under a Creative Commons
+ * Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
+ *
+ * The icon's homepage is http://code.google.com/p/ultimate-gnome/
+ */
+
+package core.time;
+
+import java.util.ArrayList;
+
+/**
+ * The class VSVectorTime, defined how the vector timestamps are represented.
+ *
+ * @author Paul C. Buetow
+ */
+public class VSVectorTime extends ArrayList<Long> implements VSTime {
+    /** The serial version uid */
+    private static final long serialVersionUID = 1L;
+
+    /** The global time. */
+    private long globalTime;
+
+    /**
+     * Instantiates a new vector time.
+     *
+     * @param globalTime the global time
+     */
+    public VSVectorTime(long globalTime) {
+        this.globalTime = globalTime;
+    }
+
+    /**
+     * To long array.
+     *
+     * @return the long[]
+     */
+    public long[] toLongArray() {
+        final int size = super.size();
+        final long[] arr = new long[size];
+
+        for (int i = 0; i < size; ++i)
+            arr[i] = super.get(i).longValue();
+
+        return arr;
+    }
+
+    /**
+     * Sets the global time.
+     *
+     * @param globalTime the new global time
+     */
+    public void setGlobalTime(long globalTime) {
+        this.globalTime = globalTime;
+    }
+
+    /* (non-Javadoc)
+     * @see core.time.VSTime#getGlobalTime()
+     */
+    public long getGlobalTime() {
+        return globalTime;
+    }
+
+    /**
+     * Gets the copy.
+     *
+     * @return the copy
+     */
+    public VSVectorTime getCopy() {
+        final VSVectorTime vectorTime = new VSVectorTime(globalTime);
+        final int size = super.size();
+
+        for (int i = 0; i < size; ++i)
+            vectorTime.add(super.get(i));
+
+        return vectorTime;
+    }
+
+    /* (non-Javadoc)
+     * @see java.util.AbstractCollection#toString()
+     */
+    public String toString() {
+        final int size = super.size();
+        final StringBuffer buffer = new StringBuffer();
+        buffer.append("(");
+
+        for (int i = 0; i < size-1; ++i)
+            buffer.append(super.get(i)+",");
+        buffer.append(super.get(size-1)+")");
+
+        return buffer.toString();
+    }
+
+    /* (non-Javadoc)
+     * @see java.util.ArrayList#get(int)
+     */
+    public Long get(int index) {
+        if (index >= super.size())
+            return new Long(0);
+
+        return super.get(index);
+    }
+}