import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.Set;
import java.util.SortedMap;

public class Test {

public static void main(String[] args) {
SortedMap<String, Charset> map = Charset.availableCharsets();
Set<String> keys = map.keySet();
Iterator<String> ite = keys.iterator();
while (ite.hasNext()) {
String charset = ite.next();
System.out.println(charset);
}
}
}