code: private static KeyPair parsePrivateKeyFile(File keyFile) {
          if (keyFile == null) {
            return null;
          }
  
          try {
              JSch jsch = new JSch();
              KeyPair key = KeyPair.load(jsch, keyFile.getAbsolutePath());
              return key;
          } catch (JSchException ex) {
              return null;
          }
      }
docs: Parses the keyFile hiding any Exceptions that might occur.
  @param keyFile the file.
  @return the "parsed" file.