NetscapeCookieFile: Javadoc fixes

Downstream analyzers reported empty fields in the javadoc. I corrected
few more details:

* Fill empty javadoc fields.
* Use <p> to separate description paragraphs.
* End description paragraphs with a period.
* Remove period at the end of field descriptions.

Change-Id: I749e4b821fc855999caddc442ac788fa514386ea
Signed-off-by: Ivan Frade <ifrade@google.com>

org.eclipse.jgit/src/org/eclipse/jgit/internal/transport/http/NetscapeCookieFile.java

@@ -78,7 +78,7 @@ import org.slf4j.LoggerFactory;
  * Wraps all cookies persisted in a <strong>Netscape Cookie File Format</strong>
  * being referenced via the git config <a href=
  * "https://git-scm.com/docs/git-config#git-config-httpcookieFile">http.cookieFile</a>.
- *
+ * <p>
  * It will only load the cookies lazily, i.e. before calling
  * {@link #getCookies(boolean)} the file is not evaluated. This class also
  * allows persisting cookies in that file format.
@@ -134,6 +134,7 @@ public final class NetscapeCookieFile {
 
 	/**
 	 * @param path
+	 *            where to find the cookie file
 	 */
 	public NetscapeCookieFile(Path path) {
 		this(path, new Date());
@@ -146,13 +147,17 @@ public final class NetscapeCookieFile {
 	}
 
 	/**
-	 * @return the path to the underlying cookie file
+	 * Path to the underlying cookie file.
+	 *
+	 * @return the path
 	 */
 	public Path getPath() {
 		return path;
 	}
 
 	/**
+	 * Return all cookies from the underlying cookie file.
+	 *
 	 * @param refresh
 	 *            if {@code true} updates the list from the underlying cookie
 	 *            file if it has been modified since the last read otherwise
@@ -205,7 +210,7 @@ public final class NetscapeCookieFile {
 	 * @throws IOException
 	 *             if the given file could not be read for some reason
 	 * @throws IllegalArgumentException
-	 *             if the given file does not have a proper format.
+	 *             if the given file does not have a proper format
 	 */
 	private static Set<HttpCookie> parseCookieFile(@NonNull byte[] input,
 			@NonNull Date creationDate)
@@ -275,23 +280,25 @@ public final class NetscapeCookieFile {
 	/**
 	 * Writes all the cookies being maintained in the set being returned by
 	 * {@link #getCookies(boolean)} to the underlying file.
-	 *
+	 * <p>
 	 * Session-cookies will not be persisted.
 	 *
 	 * @param url
 	 *            url for which to write the cookies (important to derive
 	 *            default values for non-explicitly set attributes)
 	 * @throws IOException
-	 * @throws IllegalArgumentException
+	 *             if the underlying cookie file could not be read or written or
+	 *             a problem with the lock file
 	 * @throws InterruptedException
+	 *             if the thread is interrupted while waiting for the lock
 	 */
-	public void write(URL url)
-			throws IllegalArgumentException, IOException, InterruptedException {
+	public void write(URL url) throws IOException, InterruptedException {
 		try {
 			byte[] cookieFileContent = getFileContentIfModified();
 			if (cookieFileContent != null) {
-				LOG.debug(
-						"Reading the underlying cookie file '{}' as it has been modified since the last access", //$NON-NLS-1$
+				LOG.debug("Reading the underlying cookie file '{}' " //$NON-NLS-1$
+						+ "as it has been modified since " //$NON-NLS-1$
+						+ "the last access", //$NON-NLS-1$
 						path);
 				// reread new changes if necessary
 				Set<HttpCookie> cookiesFromFile = NetscapeCookieFile
@@ -326,19 +333,21 @@ public final class NetscapeCookieFile {
 		}
 		throw new IOException(
 				MessageFormat.format(JGitText.get().cannotLock, lockFile));
-
 	}
 
 	/**
 	 * Read the underying file and return its content but only in case it has
-	 * been modified since the last access. Internally calculates the hash and
-	 * maintains {@link FileSnapshot}s to prevent issues described as <a href=
+	 * been modified since the last access.
+	 * <p>
+	 * Internally calculates the hash and maintains {@link FileSnapshot}s to
+	 * prevent issues described as <a href=
 	 * "https://github.com/git/git/blob/master/Documentation/technical/racy-git.txt">"Racy
 	 * Git problem"</a>. Inspired by {@link FileBasedConfig#load()}.
 	 *
 	 * @return the file contents in case the file has been modified since the
 	 *         last access, otherwise {@code null}
 	 * @throws IOException
+	 *             if the file is not found or cannot be read
 	 */
 	private byte[] getFileContentIfModified() throws IOException {
 		final int maxStaleRetries = 5;
@@ -392,10 +401,10 @@ public final class NetscapeCookieFile {
 
 	/**
 	 * Writes the given cookies to the file in the Netscape Cookie File Format
-	 * (also used by curl)
+	 * (also used by curl).
 	 *
 	 * @param writer
-	 *            the writer to use to persist the cookies.
+	 *            the writer to use to persist the cookies
 	 * @param cookies
 	 *            the cookies to write into the file
 	 * @param url
@@ -404,8 +413,9 @@ public final class NetscapeCookieFile {
 	 * @param creationDate
 	 *            the date when the cookie has been created. Important for
 	 *            calculation the cookie expiration time (calculated from
-	 *            cookie's maxAge and this creation time).
+	 *            cookie's maxAge and this creation time)
 	 * @throws IOException
+	 *             if an I/O error occurs
 	 */
 	static void write(@NonNull Writer writer,
 			@NonNull Collection<HttpCookie> cookies, @NonNull URL url,
@@ -461,7 +471,9 @@ public final class NetscapeCookieFile {
 	 * the entry from set {@code cookies1} ends up in the resulting set.
 	 *
 	 * @param cookies1
+	 *            first set of cookies
 	 * @param cookies2
+	 *            second set of cookies
 	 *
 	 * @return the merged cookies
 	 */