Why I do hate java

Ref.java

public class Ref {
    public void inc1(int i) {
        ++i;
    }
    public void inc2(Integer i) {
        ++i;
    }
    public static void main(String[] args) {
        int foo = 32;
        Integer bar = 41;
        Ref r = new Ref();
        System.out.println("Expected: 32x41\nGot: " + foo + "x" + bar);
        r.inc1(foo);
        System.out.println("Expected: 32x41\nGot: " + foo + "x" + bar);
        r.inc2(bar);
        System.out.println("Expected: 32x42\nGot: " + foo + "x" + bar);
        r.inc1(bar);
        System.out.println("Expected: 32x42\nGot: " + foo + "x" + bar);
        r.inc2(foo);
        System.out.println("Expected: 32x42\nGot: " + foo + "x" + bar);
        /* Output:
Expected: 32x41
Got: 32x41
Expected: 32x41
Got: 32x41
Expected: 32x42
Got: 32x41
Expected: 32x42
Got: 32x41
Expected: 32x42
Got: 32x41
        */
    }
}

Oh, I see… I wasn’t quite paying enough attention. Yes, it is odd how Integer is an effectively immutable object like that, which is different from most other Java objects.
I’m not a particularly big fan of Java myself, or I might have noticed that sooner ☺