import java.nio.charset.StandardCharsets;

Integer[] code_points = {0x0041, 0x00F6, 0x0416, 0x20AC, 0x1D11E};

void setup() {
  size(850, 230);
  background(255);
  fill(0);
  textSize(16);
  int tel_1 = 80;
  int tel_2 = 50;
  text("Char     Name                                                            Unicode          UTF-8 (encoding)      Decoded", 40, 40);
  for (int cp : code_points) {
    byte[] encoded = new String(new int[]{cp}, 0, 1).getBytes(StandardCharsets.UTF_8);
    for (byte b : encoded) {
      text(hex(b), tel_2+530, tel_1);
      tel_2 += 30;
    }
    text(char(cp), 50, tel_1);
    text(Character.getName(cp), 100, tel_1);
    String unicode = hex(cp);
    while (unicode.length() > 4 && unicode.indexOf("0") == 0) unicode = unicode.substring(1);
    text("U+"+unicode, 450, tel_1);
    Character decoded = char(new String(encoded, StandardCharsets.UTF_8).codePointAt(0));
    text(decoded, 750, tel_1);
    tel_1 += 30;  tel_2 = 50;
  }
}