public class Encoder {
public static String toUnicode ( String input ) {
StringBuilder builder = new StringBuilder();
char[] chars = input.toCharArray();
for ( char ch : chars ) {
if ( ch < 256 ) {
builder.append( ch );
} else {
builder.append( "\\u" + Integer.toHexString( ch& 0xffff ) );
}
}
return builder.toString();
}
}