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javacastingintegerinstanceof

Java - get an Integer value from String or int - avoiding instanceof

Is there a single line implementation for the getInt method?

If not - can one implement it without using instanceof?

public class ParseInt {
    public static void main(String[] args) {
        Object intArr[] = { "131", 232, new Integer(333) };

        for (Object intObj : intArr) {
            System.out.println(getInt(intObj));
        }
    }

    private static int getInt(Object obj) {
        return // ???
    }
}
Solution

  • Use Integer.valueOf(obj.toString)

    private static int getInt(Object obj) {
    return Integer.valueOf(obj.toString());
}

    This will work for your object array