Charset.isRegistered() has the following syntax.
public final boolean isRegistered()
In the following code shows how to use Charset.isRegistered() method.
import java.nio.charset.Charset; import java.util.Iterator; import java.util.Map; /*from w ww.ja v a 2 s . c om*/ public class Main { public static void main(String[] args) { Map<String, Charset> charsets = Charset.availableCharsets(); Iterator<Charset> iterator = charsets.values().iterator(); while (iterator.hasNext()) { Charset cs = (Charset) iterator.next(); System.out.println(cs.displayName()); if (cs.isRegistered()) { System.out.print(" (registered): "); } else { System.out.print(" (unregistered): "); } } } }
The code above generates the following result.