Java - Append quotes to strings in an array and join strings in an array

Question

I would like to append double quotes to strings in an array and then later join them as a single string (retaining the quotes). Is there any String library which does this?

Answer 1

A more generic way would be sth. like:

private static class QuoteFunction {
    char quote;

    public QuoteFunction(char quote) {
        super();
        this.quote = quote;
    }

    Function func = new Function() {
        @Override
        public String apply(F s) {
            return new StringBuilder(s.toString().length()+2).append(quote).append(s).append(quote).toString();
        }
    };

    public Function getFunction() {
        return func;
    }
}

... call it via the following function

public static  String asString(Iterable lst, String delimiter, Character quote) {
    QuoteFunction quoteFunc = new QuoteFunction(quote);
    Joiner joiner = Joiner.on(delimiter).skipNulls();
    return joiner.join(Iterables.transform(lst, quoteFunc.getFunction()));
}