diff -r 000000000000 -r fb9019fb1bf7 src/net/fortuna/ical4j/model/property/Transp.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/net/fortuna/ical4j/model/property/Transp.java	Tue Feb 10 18:12:00 2015 +0100
@@ -0,0 +1,171 @@
+/**
+ * Copyright (c) 2012, Ben Fortuna
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  o Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ *  o Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ *  o Neither the name of Ben Fortuna nor the names of any other contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.fortuna.ical4j.model.property;
+
+import net.fortuna.ical4j.model.ParameterList;
+import net.fortuna.ical4j.model.Property;
+import net.fortuna.ical4j.model.PropertyFactoryImpl;
+import net.fortuna.ical4j.model.ValidationException;
+
+/**
+ * $Id$
+ * 
+ * Created: [Apr 6, 2004]
+ *
+ * Defines a TRANSP iCalendar component property.
+ * 
+ * <pre>
+ *     4.8.2.7 Time Transparency
+ *     
+ *        Property Name: TRANSP
+ *     
+ *        Purpose: This property defines whether an event is transparent or not
+ *        to busy time searches.
+ *     
+ *        Value Type: TEXT
+ *     
+ *        Property Parameters: Non-standard property parameters can be
+ *        specified on this property.
+ *     
+ *        Conformance: This property can be specified once in a &quot;VEVENT&quot;
+ *        calendar component.
+ *     
+ *        Description: Time Transparency is the characteristic of an event that
+ *        determines whether it appears to consume time on a calendar. Events
+ *        that consume actual time for the individual or resource associated
+ *        with the calendar SHOULD be recorded as OPAQUE, allowing them to be
+ *        detected by free-busy time searches. Other events, which do not take
+ *        up the individual's (or resource's) time SHOULD be recorded as
+ *        TRANSPARENT, making them invisible to free-busy time searches.
+ *     
+ *        Format Definition: The property is specified by the following
+ *        notation:
+ *     
+ *          transp     = &quot;TRANSP&quot; tranparam &quot;:&quot; transvalue CRLF
+ *     
+ *          tranparam  = *(&quot;;&quot; xparam)
+ *     
+ *          transvalue = &quot;OPAQUE&quot;      ;Blocks or opaque on busy time searches.
+ *                     / &quot;TRANSPARENT&quot; ;Transparent on busy time searches.
+ *             ;Default value is OPAQUE
+ *     
+ *        Example: The following is an example of this property for an event
+ *        that is transparent or does not block on free/busy time searches:
+ *     
+ *          TRANSP:TRANSPARENT
+ *     
+ *        The following is an example of this property for an event that is
+ *        opaque or blocks on free/busy time searches:
+ *     
+ *          TRANSP:OPAQUE
+ * </pre>
+ * 
+ * @author Ben Fortuna
+ */
+public class Transp extends Property {
+
+    private static final long serialVersionUID = 3801479657311785518L;
+
+    /**
+     * Opaque.
+     */
+    public static final Transp OPAQUE = new ImmutableTransp("OPAQUE");
+
+    /**
+     * Transparent.
+     */
+    public static final Transp TRANSPARENT = new ImmutableTransp("TRANSPARENT");
+
+    /**
+     * @author Ben Fortuna An immutable instance of Transp.
+     */
+    private static final class ImmutableTransp extends Transp {
+
+        private static final long serialVersionUID = -6595830107310111996L;
+
+        private ImmutableTransp(final String value) {
+            super(new ParameterList(true), value);
+        }
+
+        public void setValue(final String aValue) {
+            throw new UnsupportedOperationException(
+                    "Cannot modify constant instances");
+        }
+    }
+
+    private String value;
+
+    /**
+     * Default constructor.
+     */
+    public Transp() {
+        super(TRANSP, PropertyFactoryImpl.getInstance());
+    }
+
+    /**
+     * @param aValue a value string for this component
+     */
+    public Transp(final String aValue) {
+        super(TRANSP, PropertyFactoryImpl.getInstance());
+        this.value = aValue;
+    }
+
+    /**
+     * @param aList a list of parameters for this component
+     * @param aValue a value string for this component
+     */
+    public Transp(final ParameterList aList, final String aValue) {
+        super(TRANSP, aList, PropertyFactoryImpl.getInstance());
+        this.value = aValue;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public void setValue(final String aValue) {
+        this.value = aValue;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public final String getValue() {
+        return value;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public final void validate() throws ValidationException {
+        // TODO: Auto-generated method stub
+    }
+}