| jeffhao | 5d1ac92 | 2011-09-29 17:41:15 -0700 | [diff] [blame^] | 1 | import java.nio.charset.Charset; |
| 2 | import java.util.ArrayList; |
| 3 | import java.util.Arrays; |
| 4 | import java.util.Collections; |
| 5 | import java.util.HashSet; |
| 6 | import java.util.List; |
| 7 | import java.util.Map; |
| 8 | import java.util.SortedMap; |
| 9 | import java.util.Set; |
| 10 | |
| 11 | public class Main { |
| 12 | static public void main(String[] args) throws Exception { |
| 13 | // These charsets must be provided; anything else is optional. |
| 14 | List<String> standardCharsets = Arrays.asList("US-ASCII", "ISO-8859-1", |
| 15 | "UTF-8", "UTF-16BE", "UTF-16LE", "UTF-16"); |
| 16 | |
| 17 | SortedMap<String, Charset> all = Charset.availableCharsets(); |
| 18 | Set<String> needed = new HashSet<String>(standardCharsets); |
| 19 | for (Map.Entry<String, Charset> e : all.entrySet()) { |
| 20 | String canonicalName = e.getKey(); |
| 21 | needed.remove(canonicalName); |
| 22 | } |
| 23 | System.out.println("Missing: " + needed); |
| 24 | } |
| 25 | } |