import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;

public class TestCharsetEncoder {

    public static void main(String[] args) {
        for (Charset charset : Charset.availableCharsets().values()) {
            System.err.println(charset.name());
            if (charset.canEncode()) {
                CharsetEncoder encoder = charset.newEncoder();
                for (int i = 0; i < 0x10000; i++) {
                    char ch = (char) i;
                    if (encoder.canEncode(ch)) {
                        String string = "" + ch;
                        byte[] array = string.getBytes(charset); // encode to charset
                        String str = new String(array, charset); // decode from charset
                        if (!string.equals(str)) {
                            System.err.println("   " + i);
                        }
                    }
                }
            }
        }
    }
}