Method parseInt

spotbugsTestCases/src/java/tigerTraps/Parsing.java:10–12

Returns Integer corresponding to s, or null if s is null. @throws NumberFormatException if s is nonnull and doesn't represent a valid integer.

(String s)

     *             if s is nonnull and doesn't represent a valid integer.
     */
    public static Integer parseInt(String s) {
        return (s == null) ? (Integer) null : Integer.parseInt(s);
    }

    public static void main(String[] args) {
        System.out.println(parseInt("-1") + " " + parseInt(null) + " " + parseInt("1"));