Polish

Closes gh-880

Author: izeye

spring-core/src/main/java/org/springframework/util/FileCopyUtils.java

@@ -171,15 +171,15 @@ public static int copy(Reader in, Writer out) throws IOException {
 		Assert.notNull(out, "No Writer specified");
 
 		try {
-			int byteCount = 0;
+			int charCount = 0;
 			char[] buffer = new char[BUFFER_SIZE];
-			int bytesRead = -1;
-			while ((bytesRead = in.read(buffer)) != -1) {
-				out.write(buffer, 0, bytesRead);
-				byteCount += bytesRead;
+			int charsRead;
+			while ((charsRead = in.read(buffer)) != -1) {
+				out.write(buffer, 0, charsRead);
+				charCount += charsRead;
 			}
 			out.flush();
-			return byteCount;
+			return charCount;
 		}
 		finally {
 			close(in);
@@ -188,7 +188,7 @@ public static int copy(Reader in, Writer out) throws IOException {
 	}
 
 	/**
-	 * Copy the contents of the given String to the given output Writer.
+	 * Copy the contents of the given String to the given Writer.
 	 * Closes the writer when done.
 	 * @param in the String to copy from
 	 * @param out the Writer to copy to

spring-core/src/main/java/org/springframework/util/StreamUtils.java

@@ -87,9 +87,9 @@ public static String copyToString(@Nullable InputStream in, Charset charset) thr
 		StringBuilder out = new StringBuilder();
 		InputStreamReader reader = new InputStreamReader(in, charset);
 		char[] buffer = new char[BUFFER_SIZE];
-		int bytesRead = -1;
-		while ((bytesRead = reader.read(buffer)) != -1) {
-			out.append(buffer, 0, bytesRead);
+		int charsRead;
+		while ((charsRead = reader.read(buffer)) != -1) {
+			out.append(buffer, 0, charsRead);
 		}
 		return out.toString();
 	}
@@ -127,10 +127,11 @@ public static void copy(byte[] in, OutputStream out) throws IOException {
 		Assert.notNull(out, "No OutputStream specified");
 
 		out.write(in);
+		out.flush();
 	}
 
 	/**
-	 * Copy the contents of the given String to the given output OutputStream.
+	 * Copy the contents of the given String to the given OutputStream.
 	 * <p>Leaves the stream open when done.
 	 * @param in the String to copy from
 	 * @param charset the Charset
@@ -161,7 +162,7 @@ public static int copy(InputStream in, OutputStream out) throws IOException {
 
 		int byteCount = 0;
 		byte[] buffer = new byte[BUFFER_SIZE];
-		int bytesRead = -1;
+		int bytesRead;
 		while ((bytesRead = in.read(buffer)) != -1) {
 			out.write(buffer, 0, bytesRead);
 			byteCount += bytesRead;