src/windows/classes/sun/nio/fs/WindowsPath.java

*** 644,654 ****
          return new WindowsPath(getFileSystem(), WindowsPathType.RELATIVE, "", sb.toString());
      }
  
      @Override
      public boolean startsWith(Path obj) {
!         WindowsPath other = toWindowsPath(obj);
  
          // if this path has a root component the given path's root must match
          if (!this.root.equalsIgnoreCase(other.root)) {
              return false;
          }
--- 644,656 ----
          return new WindowsPath(getFileSystem(), WindowsPathType.RELATIVE, "", sb.toString());
      }
  
      @Override
      public boolean startsWith(Path obj) {
!         if (!(Objects.requireNonNull(obj) instanceof WindowsPath))
!             return false;
!         WindowsPath other = (WindowsPath)obj;
  
          // if this path has a root component the given path's root must match
          if (!this.root.equalsIgnoreCase(other.root)) {
              return false;
          }
*** 673,683 ****
          return false;
      }
  
      @Override
      public boolean endsWith(Path obj) {
!         WindowsPath other = toWindowsPath(obj);
  
          // other path is longer
          if (other.path.length() > this.path.length()) {
              return false;
          }
--- 675,687 ----
          return false;
      }
  
      @Override
      public boolean endsWith(Path obj) {
!         if (!(Objects.requireNonNull(obj) instanceof WindowsPath))
!             return false;
!         WindowsPath other = (WindowsPath)obj;
  
          // other path is longer
          if (other.path.length() > this.path.length()) {
              return false;
          }