diff --git a/src/main/org/apache/tools/ant/filters/StringInputStream.java b/src/main/org/apache/tools/ant/filters/StringInputStream.java
index 96d84b5c4..1cc4519a3 100644
--- a/src/main/org/apache/tools/ant/filters/StringInputStream.java
+++ b/src/main/org/apache/tools/ant/filters/StringInputStream.java
@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2002 The Apache Software Foundation.  All rights
+ * Copyright (c) 2002-2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -125,6 +125,16 @@ public class StringInputStream
         }
     }
 
+    /**
+     * Reads from the Stringreader into a byte array
+     *
+     * @param b  the byte array to read into
+     * @param off the offset in the byte array
+     * @param len the length in the byte array to fill
+     * @return the actual number read into the byte array, -1 at
+     *         the end of the stream
+     * @exception IOException if an error occurs
+     */
     public synchronized int read(byte[] b, int off, int len)
         throws IOException {
 
@@ -176,6 +186,10 @@ public class StringInputStream
     }
 
 
+    /**
+     * @return   the current number of bytes ready for reading
+     * @exception IOException if an error occurs
+     */
     public synchronized int available() throws IOException {
         if (in == null) {
             throw new IOException("Stream Closed");
@@ -190,6 +204,9 @@ public class StringInputStream
         }
     }
 
+    /**
+     * @return false - mark is not supported
+     */
     public boolean markSupported () {
         return false;   // would be imprecise
     }
diff --git a/src/main/org/apache/tools/ant/filters/util/ChainReaderHelper.java b/src/main/org/apache/tools/ant/filters/util/ChainReaderHelper.java
index 655200646..56917587c 100644
--- a/src/main/org/apache/tools/ant/filters/util/ChainReaderHelper.java
+++ b/src/main/org/apache/tools/ant/filters/util/ChainReaderHelper.java
@@ -98,6 +98,7 @@ public final class ChainReaderHelper {
 
     /**
      * Sets the primary reader
+     * @param rdr the reader object
      */
     public final void setPrimaryReader(Reader rdr) {
         primaryReader = rdr;
@@ -105,6 +106,7 @@ public final class ChainReaderHelper {
 
     /**
      * Set the project to work with
+     * @param project the current project
      */
     public final void setProject(final Project project) {
         this.project = project;
@@ -112,6 +114,8 @@ public final class ChainReaderHelper {
 
     /**
      * Get the project
+     *
+     * @return the current project
      */
     public final Project getProject() {
         return project;
@@ -120,6 +124,7 @@ public final class ChainReaderHelper {
     /**
      * Sets the buffer size to be used.  Defaults to 4096,
      * if this method is not invoked.
+     * @param size the buffer size to use
      */
     public final void setBufferSize(int size) {
         bufferSize = size;
@@ -127,6 +132,8 @@ public final class ChainReaderHelper {
 
     /**
      * Sets the collection of filter reader sets
+     *
+     * @param fchain the filter chains collection
      */
     public final void setFilterChains(Vector fchain) {
         filterChains = fchain;
@@ -134,6 +141,8 @@ public final class ChainReaderHelper {
 
     /**
      * Assemble the reader
+     * @return the assembled reader
+     * @exception BuildException if an error occurs
      */
     public final Reader getAssembledReader() throws BuildException {
         if (primaryReader == null) {
@@ -249,6 +258,9 @@ public final class ChainReaderHelper {
     /**
      * Read data from the reader and return the
      * contents as a string.
+     * @param rdr the reader object
+     * @return the contents of the file as a string
+     * @exception IOException if an error occurs
      */
     public final String readFully(Reader rdr)
         throws IOException {
diff --git a/src/main/org/apache/tools/ant/filters/util/JavaClassHelper.java b/src/main/org/apache/tools/ant/filters/util/JavaClassHelper.java
index bd0f928c3..e94cd3a39 100644
--- a/src/main/org/apache/tools/ant/filters/util/JavaClassHelper.java
+++ b/src/main/org/apache/tools/ant/filters/util/JavaClassHelper.java
@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2002 The Apache Software Foundation.  All rights
+ * Copyright (c) 2002-2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -72,6 +72,10 @@ public final class JavaClassHelper {
 
     /**
      * Get the constants declared in a file as name=value
+     *
+     * @param bytes the class as a array of bytes
+     * @return a StringBuffer contains the name=value pairs
+     * @exception IOException if an error occurs
      */
     public static final StringBuffer getConstants(byte[] bytes)
         throws IOException {