src/java.base/share/classes/sun/net/www/protocol/jrt/JavaRuntimeURLConnection.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

*** 64,74 ****
      private volatile Resource resource;
  
      JavaRuntimeURLConnection(URL url) throws IOException {
          super(url);
          String path = url.getPath();
!         if (path.length() == 0 || path.charAt(0) != '/')
              throw new MalformedURLException(url + " missing path or /");
          if (path.length() == 1) {
              this.module = null;
              this.name = null;
          } else {
--- 64,74 ----
      private volatile Resource resource;
  
      JavaRuntimeURLConnection(URL url) throws IOException {
          super(url);
          String path = url.getPath();
!         if (path.isEmpty() || path.charAt(0) != '/')
              throw new MalformedURLException(url + " missing path or /");
          if (path.length() == 1) {
              this.module = null;
              this.name = null;
          } else {