Java equivalent of PHP's implode(',' , array_filter( array () ))

Question

I often use this piece of code in PHP

$ordine[\'address\'] = implode(\', \', array_filter(array($cliente[\'cap\'], $cliente[\'citta\'], $cliente[\'provincia\'         


        

Answer 1

Here's my implode implementation:

/**
 * Implodes the specified items, gluing them using the specified glue replacing nulls with the specified
 * null placeholder.
 * @param glue              The text to use between the specified items.
 * @param nullPlaceholder   The placeholder to use for items that are null value.
 * @param items             The items to implode.
 * @return  A String containing the items in their order, separated by the specified glue.
 */
public static final String implode(String glue, String nullPlaceholder, String ... items) {
    StringBuilder sb = new StringBuilder();
    for (String item : items) {
        if (item != null) {
            sb.append(item);
        } else {
            sb.append(nullPlaceholder);
        }
        sb.append(glue);
    }
    return sb.delete(sb.length() - glue.length(), sb.length()).toString();
}