output: #fixed code
                                  @Override
      public SyndFeedInfo remove(final URL url) {
          SyndFeedInfo info = null;
          final String fileName = cachePath + File.separator + "feed_" + replaceNonAlphanumeric(url.toString(), '_').trim();
          FileInputStream fis = null;
          ObjectInputStream ois = null;
          try {
              fis = new FileInputStream(fileName);
              ois = new ObjectInputStream(fis);
              info = (SyndFeedInfo) ois.readObject();
  
              final File file = new File(fileName);
              if (file.exists()) {
                  file.delete();
              }
          } catch (final FileNotFoundException fnfe) {
              // That's OK, we'l return null
          } catch (final ClassNotFoundException cnfe) {
              // Error writing to cahce is fatal
              throw new RuntimeException("Attempting to read from cache", cnfe);
          } catch (final IOException fnfe) {
              // Error writing to cahce is fatal
              throw new RuntimeException("Attempting to read from cache", fnfe);
          } finally {
              if (fis != null) {
                  try {
                      fis.close();
                  } catch (final IOException e) {
                  }
              }
              if (ois != null) {
                  try {
                      ois.close();
                  } catch (final IOException e) {
                  }
              }
          }
          return info;
      }
input: #vulnerable code 
                                  @Override
      public SyndFeedInfo remove(final URL url) {
          SyndFeedInfo info = null;
          final String fileName = cachePath + File.separator + "feed_" + replaceNonAlphanumeric(url.toString(), '_').trim();
          FileInputStream fis;
          try {
              fis = new FileInputStream(fileName);
              final ObjectInputStream ois = new ObjectInputStream(fis);
              info = (SyndFeedInfo) ois.readObject();
              fis.close();
  
              final File file = new File(fileName);
              if (file.exists()) {
                  file.delete();
              }
          } catch (final FileNotFoundException fnfe) {
              // That's OK, we'l return null
          } catch (final ClassNotFoundException cnfe) {
              // Error writing to cahce is fatal
              throw new RuntimeException("Attempting to read from cache", cnfe);
          } catch (final IOException fnfe) {
              // Error writing to cahce is fatal
              throw new RuntimeException("Attempting to read from cache", fnfe);
          }
          return info;
      } 
                              #location 16 
                              #vulnerability type RESOURCE_LEAK