What will the following code print out to console?

public class Test {
    private Integer k;
    private int z;
    private int i;

    public void method() {
        i = k + z;                 // 1

    public static void main(String[] args) {
        Test t = new Test();
        System.out.println(t.i); // 2
i and z variables will be initialised as 0 since they are of primitive type. k, in turn, is an object and will, therefore, be initialised as null. Operations with null will result in a NullPointerException runtime error.

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