diff --git a/src/main/java/org/jboss/netty/util/ConvertUtil.java b/src/main/java/org/jboss/netty/util/ConvertUtil.java
index f68bd429f2..eb84401daa 100644
--- a/src/main/java/org/jboss/netty/util/ConvertUtil.java
+++ b/src/main/java/org/jboss/netty/util/ConvertUtil.java
@@ -23,6 +23,8 @@
 package org.jboss.netty.util;
 
 /**
+ * Conversion utility class to parse a property represented as a string.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *
diff --git a/src/main/java/org/jboss/netty/util/ImmediateExecutor.java b/src/main/java/org/jboss/netty/util/ImmediateExecutor.java
index 09457aa8c1..8bbcca797f 100644
--- a/src/main/java/org/jboss/netty/util/ImmediateExecutor.java
+++ b/src/main/java/org/jboss/netty/util/ImmediateExecutor.java
@@ -25,6 +25,8 @@ package org.jboss.netty.util;
 import java.util.concurrent.Executor;
 
 /**
+ * {@link Executor} which executes the command in the caller thread.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *
diff --git a/src/main/java/org/jboss/netty/util/NamePreservingRunnable.java b/src/main/java/org/jboss/netty/util/NamePreservingRunnable.java
index ac72b55312..86134ff317 100644
--- a/src/main/java/org/jboss/netty/util/NamePreservingRunnable.java
+++ b/src/main/java/org/jboss/netty/util/NamePreservingRunnable.java
@@ -25,6 +25,16 @@ package org.jboss.netty.util;
 import org.jboss.netty.logging.InternalLogger;
 import org.jboss.netty.logging.InternalLoggerFactory;
 
+/**
+ * {@link Runnable} that changes the current thread name and reverts it back
+ * when its execution ends.
+ *
+ * @author The Netty Project (netty-dev@lists.jboss.org)
+ * @author Trustin Lee (tlee@redhat.com)
+ *
+ * @version $Rev$, $Date$
+ *
+ */
 public class NamePreservingRunnable implements Runnable {
     private static final InternalLogger logger =
         InternalLoggerFactory.getInstance(NamePreservingRunnable.class);
diff --git a/src/main/java/org/jboss/netty/util/SwitchableInputStream.java b/src/main/java/org/jboss/netty/util/SwitchableInputStream.java
index e331ff6eda..d8ada3ca03 100644
--- a/src/main/java/org/jboss/netty/util/SwitchableInputStream.java
+++ b/src/main/java/org/jboss/netty/util/SwitchableInputStream.java
@@ -26,6 +26,9 @@ import java.io.FilterInputStream;
 import java.io.InputStream;
 
 /**
+ * {@link FilterInputStream} which allows a user to change the underlying
+ * stream at any time.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *
diff --git a/src/main/java/org/jboss/netty/util/TimeBasedUuidGenerator.java b/src/main/java/org/jboss/netty/util/TimeBasedUuidGenerator.java
index bca882ed9d..87d9e1dac1 100644
--- a/src/main/java/org/jboss/netty/util/TimeBasedUuidGenerator.java
+++ b/src/main/java/org/jboss/netty/util/TimeBasedUuidGenerator.java
@@ -32,6 +32,8 @@ import java.util.UUID;
 import java.util.concurrent.atomic.AtomicInteger;
 
 /**
+ * Generates a time-based {@link UUID}.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *