public static void main(String[] args) throws IOException {
    StringBuilder sb = new StringBuilder();

    // Table header
    sb.append("| Emoji | Aliases | Emoji | Aliases |\n");
    sb.append("| :---: | ------- | :---: | ------- |\n");

    // Emojis!
    int i = 0;
    for (Emoji emoji : EmojiManager.getAll()) {
      String aliases = getAliases(emoji);

      if (i % 2 == 0) {
        sb.append("| ")
          .append(emoji.getUnicode())
          .append(" | ")
          .append(aliases)
          .append(" |");
      } else {
        sb.append(" ")
          .append(emoji.getUnicode())
          .append(" | ")
          .append(aliases)
          .append(" |\n");
      }

      i++;
    }

    // Output!
    if (args.length > 0) {
      String path = args[0];
      FileWriter writer = new FileWriter(path);
      writer.write(sb.toString());
      System.out.println("Written on " + path);
    } else {
      System.out.println(sb.toString());
    }
  }
This app generate the emoji table in the README ;)
<p/>
Run with:
mvn exec:java -Dexec.mainClass="com.vdurmont.emoji.TableGenerator"
emoji-table-generator/src/main/java/com/vdurmont/emoji/TableGenerator.java