Review Questions

Which statement is true?

Select the one correct answer.

Given the declaration

interface IntHolder { int getInt(); }

which of the following methods are valid?

//----(1)----
    IntHolder makeIntHolder(int i) {
        return new IntHolder() {
            public int getInt() { return i; }
        };
    }
//----(2)----
    IntHolder makeIntHolder(final int i) {
        return new IntHolder {
            public int getInt() { return i; }
        };
    }
//----(3)----
    IntHolder makeIntHolder(int i) {
        class MyIH implements IntHolder {
            public int getInt() { return i; }
        }
        return new MyIH();
    }
//----(4)----
    IntHolder makeIntHolder(final int i) {
        class MyIH implements IntHolder {
            public int getInt() { return i; }
        }
        return new MyIH();
    }
//----(5)----
    IntHolder makeIntHolder(int i) {
        return new MyIH(i);
    }
    static class MyIH implements IntHolder {
        final int j;
        MyIH(int i) { j = i; }
        public int getInt() { return j; }
    }

Select the two correct answers.

Which statements are true?

Select the two correct answers.

Which statement is true?

Select the one correct answer.