Single char literals are not supported

[markiewb]

'?'+variable+'?' 

isn't supported by additional hints

[markiewb]

The wrong ones:

//      String v1 = name + " (" + x + ", " + y + ')';
        String v1 = MessageFormat.format("{0} ({1}, {2}{3}", name, x, y, ')');
//      String v2 = name + " (" + x + ", " + y + ')';
        String v2 = String.format("%s (%s, %s%s", name, x, y, ')');
//      String v3 = name + " (" + x + ", " + y + ')';
        String v3 = new StringBuilder().append(name).append(" (").append(x).append(", ").append(y).append(')').toString();