src/share/classes/java/net/URLConnection.java

rev 1564 : 7090158: Networking Libraries don't build with javac -Werror
7125055: ContentHandler.getContent API changed in error
Summary: Minor changes to networking java files to remove warnings
Reviewed-by: chegar, weijun, hawtin, alanb
Contributed-by: kurchi.subhra.hazra@oracle.com, sasha_bu@hotmail.com

*** 573,583 ****
       *
       * @return a Map of header fields
       * @since 1.4
       */
      public Map<String,List<String>> getHeaderFields() {
!         return Collections.EMPTY_MAP;
      }
  
      /**
       * Returns the value of the named field parsed as a number.
       * <p>
--- 573,583 ----
       *
       * @return a Map of header fields
       * @since 1.4
       */
      public Map<String,List<String>> getHeaderFields() {
!         return Collections.emptyMap();
      }
  
      /**
       * Returns the value of the named field parsed as a number.
       * <p>
*** 614,623 ****
--- 614,624 ----
       * @param   Default   a default value.
       * @return  the value of the field, parsed as a date. The value of the
       *          <code>Default</code> argument is returned if the field is
       *          missing or malformed.
       */
+     @SuppressWarnings("deprecation")
      public long getHeaderFieldDate(String name, long Default) {
          String value = getHeaderField(name);
          try {
              return Date.parse(value);
          } catch (Exception e) { }
*** 1108,1118 ****
      public Map<String,List<String>> getRequestProperties() {
          if (connected)
              throw new IllegalStateException("Already connected");
  
          if (requests == null)
!             return Collections.EMPTY_MAP;
  
          return requests.getHeaders(null);
      }
  
      /**
--- 1109,1119 ----
      public Map<String,List<String>> getRequestProperties() {
          if (connected)
              throw new IllegalStateException("Already connected");
  
          if (requests == null)
!             return Collections.emptyMap();
  
          return requests.getHeaders(null);
      }
  
      /**
*** 1191,1201 ****
              security.checkSetFactory();
          }
          factory = fac;
      }
  
!     private static Hashtable handlers = new Hashtable();
      private static final ContentHandler UnknownContentHandlerP = new UnknownContentHandler();
  
      /**
       * Gets the Content Handler appropriate for this connection.
       * @param connection the connection to use.
--- 1192,1202 ----
              security.checkSetFactory();
          }
          factory = fac;
      }
  
!     private static Hashtable<String, ContentHandler> handlers = new Hashtable<String, ContentHandler>();
      private static final ContentHandler UnknownContentHandlerP = new UnknownContentHandler();
  
      /**
       * Gets the Content Handler appropriate for this connection.
       * @param connection the connection to use.
*** 1206,1216 ****
          String contentType = stripOffParameters(getContentType());
          ContentHandler handler = null;
          if (contentType == null)
              throw new UnknownServiceException("no content-type");
          try {
!             handler = (ContentHandler) handlers.get(contentType);
              if (handler != null)
                  return handler;
          } catch(Exception e) {
          }
  
--- 1207,1217 ----
          String contentType = stripOffParameters(getContentType());
          ContentHandler handler = null;
          if (contentType == null)
              throw new UnknownServiceException("no content-type");
          try {
!             handler = handlers.get(contentType);
              if (handler != null)
                  return handler;
          } catch(Exception e) {
          }
  
*** 1272,1282 ****
          while (packagePrefixIter.hasMoreTokens()) {
              String packagePrefix = packagePrefixIter.nextToken().trim();
  
              try {
                  String clsName = packagePrefix + "." + contentHandlerClassName;
!                 Class cls = null;
                  try {
                      cls = Class.forName(clsName);
                  } catch (ClassNotFoundException e) {
                      ClassLoader cl = ClassLoader.getSystemClassLoader();
                      if (cl != null) {
--- 1273,1283 ----
          while (packagePrefixIter.hasMoreTokens()) {
              String packagePrefix = packagePrefixIter.nextToken().trim();
  
              try {
                  String clsName = packagePrefix + "." + contentHandlerClassName;
!                 Class<?> cls = null;
                  try {
                      cls = Class.forName(clsName);
                  } catch (ClassNotFoundException e) {
                      ClassLoader cl = ClassLoader.getSystemClassLoader();
                      if (cl != null) {