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What is the result of the following code?

int[] array = {6,9,8};
List<Integer> list = new ArrayList<>();
list.add(array[0]);
list.add(array[2]);
list.set(1, array[1]);
list.remove(0);
System.out.println(list);


A. [8]
B. [9]
C. Something like [Ljava.lang.String;@160bc7c0
D. An exception is thrown.
E. The code does not compile.

Explanation:
The array is allowed to use an anonymous initializer because it is in the same line as the declaration. The ArrayList uses the diamond operator allowed since Java 7. This specifies the type matches the one on the left without having to re-type it. After adding the two elements, list contains [6, 8]. We then replace the element at index 1 with 9, resulting in [6, 9]. Finally, we remove the element at index 0, leaving [9]. Option C is incorrect because arrays output something like that rather than an ArrayList.



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What is the result of the following code?

int[] array = {6,9,8};
List<Integer> list = new ArrayList<>();
list.add(array[0]);
list.add(array[2]);
list.set(1, array[1]);
list.remove(0);
System.out.println(list);


A. [8]
B. [9]
C. Something like [Ljava.lang.String;@160bc7c0
D. An exception is thrown.
E. The code does not compile.

Explanation:
The array is allowed to use an anonymous initializer because it is in the same line as the declaration. The ArrayList uses the diamond operator allowed since Java 7. This specifies the type matches the one on the left without having to re-type it. After adding the two elements, list contains [6, 8]. We then replace the element at index 1 with 9, resulting in [6, 9]. Finally, we remove the element at index 0, leaving [9]. Option C is incorrect because arrays output something like that rather than an ArrayList.

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