import java.util.*;
import java.nio.*;
import java.nio.charset.*;

/**
 * http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6196991
 */
public class Test {
  public static void main(String[] args) {
    for (Iterator it = Charset.availableCharsets().values().iterator(); it.hasNext();) {
       Charset charset = (Charset) it.next();
       try {
         if (!"A".equals(roundTrip(charset, "A"))
          || !"ABC".equals(roundTrip(charset, "ABC"))) {
           System.out.println("Broken charset: " + charset.name());
           System.out.flush();
         }
       } catch (UnsupportedOperationException ex) {
           System.out.println("Cannot perform roundtrip: " + charset.name());
           System.out.flush();
       }
    }
  }
  static String roundTrip(Charset cs, String str) {
    return cs.decode(cs.encode(str)).toString();
  }
}