diff --git a/spring-core/src/main/java/org/springframework/util/StreamUtils.java b/spring-core/src/main/java/org/springframework/util/StreamUtils.java
index 881b6d7d148..bcd408ee775 100644
--- a/spring-core/src/main/java/org/springframework/util/StreamUtils.java
+++ b/spring-core/src/main/java/org/springframework/util/StreamUtils.java
@@ -47,7 +47,7 @@ import org.springframework.lang.Nullable;
 public abstract class StreamUtils {
 
 	/**
-	 * The default buffer size used why copying bytes.
+	 * The default buffer size used when copying bytes.
 	 */
 	public static final int BUFFER_SIZE = 4096;
 
@@ -56,7 +56,7 @@ public abstract class StreamUtils {
 
 	/**
 	 * Copy the contents of the given InputStream into a new byte array.
-	 * Leaves the stream open when done.
+	 * <p>Leaves the stream open when done.
 	 * @param in the stream to copy from (may be {@code null} or empty)
 	 * @return the new byte array that has been copied to (possibly empty)
 	 * @throws IOException in case of I/O errors
@@ -73,8 +73,9 @@ public abstract class StreamUtils {
 
 	/**
 	 * Copy the contents of the given InputStream into a String.
-	 * Leaves the stream open when done.
+	 * <p>Leaves the stream open when done.
 	 * @param in the InputStream to copy from (may be {@code null} or empty)
+	 * @param charset the {@link Charset} to use to decode the bytes
 	 * @return the String that has been copied to (possibly empty)
 	 * @throws IOException in case of I/O errors
 	 */
@@ -116,7 +117,7 @@ public abstract class StreamUtils {
 
 	/**
 	 * Copy the contents of the given byte array to the given OutputStream.
-	 * Leaves the stream open when done.
+	 * <p>Leaves the stream open when done.
 	 * @param in the byte array to copy from
 	 * @param out the OutputStream to copy to
 	 * @throws IOException in case of I/O errors
@@ -130,7 +131,7 @@ public abstract class StreamUtils {
 
 	/**
 	 * Copy the contents of the given String to the given output OutputStream.
-	 * Leaves the stream open when done.
+	 * <p>Leaves the stream open when done.
 	 * @param in the String to copy from
 	 * @param charset the Charset
 	 * @param out the OutputStream to copy to
@@ -138,7 +139,7 @@ public abstract class StreamUtils {
 	 */
 	public static void copy(String in, Charset charset, OutputStream out) throws IOException {
 		Assert.notNull(in, "No input String specified");
-		Assert.notNull(charset, "No charset specified");
+		Assert.notNull(charset, "No Charset specified");
 		Assert.notNull(out, "No OutputStream specified");
 
 		Writer writer = new OutputStreamWriter(out, charset);
@@ -148,7 +149,7 @@ public abstract class StreamUtils {
 
 	/**
 	 * Copy the contents of the given InputStream to the given OutputStream.
-	 * Leaves both streams open when done.
+	 * <p>Leaves both streams open when done.
 	 * @param in the InputStream to copy from
 	 * @param out the OutputStream to copy to
 	 * @return the number of bytes copied
@@ -212,7 +213,7 @@ public abstract class StreamUtils {
 
 	/**
 	 * Drain the remaining content of the given InputStream.
-	 * Leaves the InputStream open when done.
+	 * <p>Leaves the InputStream open when done.
 	 * @param in the InputStream to drain
 	 * @return the number of bytes read
 	 * @throws IOException in case of I/O errors