/** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(String separator) {
    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

  private final String separator;

                "WEB-INF" + File.separator + "env" + File.separator + getExecuteType() + File.separator + "lib" + File.separator);
        // WEB-INF/plugin
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/plugin")),
                "WEB-INF" + File.separator + "plugin" + File.separator);
        final File targetLibDir = new File(targetDir, "fess" + File.separator + "WEB-INF" + File.separator + "lib");

                "WEB-INF" + File.separator + "env" + File.separator + getExecuteType() + File.separator + "lib" + File.separator);
        // WEB-INF/plugin
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/plugin")),
                "WEB-INF" + File.separator + "plugin" + File.separator);
        final File targetLibDir = new File(targetDir, "fess" + File.separator + "WEB-INF" + File.separator + "lib");

                "WEB-INF" + File.separator + "env" + File.separator + getExecuteType() + File.separator + "lib" + File.separator);
        // WEB-INF/plugin
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/plugin")),
                "WEB-INF" + File.separator + "plugin" + File.separator);
        final File targetLibDir = new File(targetDir, "fess" + File.separator + "WEB-INF" + File.separator + "lib");

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(String separator) {
    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

  private final String separator;

    testEncoding(encoding, decoded, encoded);

    // test separators work
    for (int sepLength = 3; sepLength <= 5; sepLength++) {
      for (String separator : ImmutableList.of(",", "\n", ";;", "")) {
        testEncoding(
            encoding.withSeparator(separator, sepLength),
            decoded,
            Joiner.on(separator).join(Splitter.fixedLength(sepLength).split(encoded)));
      }
    }
  }

    }

    // Test getPyFilePath method
    public void test_getPyFilePath() {
        pythonJob.filename("test_script.py");

        String expectedPath = "WEB-INF" + File.separator + "env" + File.separator + "python" + File.separator + "resources" + File.separator
                + "test_script.py";
        assertEquals(expectedPath, pythonJob.getPyFilePath());
    }

    // Test getPyFilePath with directory traversal attempt

     *
     * @param str
     *            the string
     * @param separator
     *            the separator
     * @return the resulting string
     */
    public static String substringFromLast(final String str, final String separator) {
        if (isEmpty(str) || isEmpty(separator)) {
            return str;
        }

  public static String join(String separator, long... array) {
    checkNotNull(separator);
    if (array.length == 0) {
      return "";
    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 5);
    builder.append(toString(array[0]));
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(toString(array[i]));
    }

    testEncoding(encoding, decoded, encoded);

    // test separators work
    for (int sepLength = 3; sepLength <= 5; sepLength++) {
      for (String separator : ImmutableList.of(",", "\n", ";;", "")) {
        testEncoding(
            encoding.withSeparator(separator, sepLength),
            decoded,
            Joiner.on(separator).join(Splitter.fixedLength(sepLength).split(encoded)));
      }
    }
  }