Java Question 20 (1 point) Will the following code have a compile error? ArrayLi

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Java

Question 20 (1 point)

Will the following code have a compile error?

ArrayList<int> list = new ArrayList<int>();

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Question 21 (1 point)

Will the following code have a compile error?

ArrayList<String> list = new ArrayList<String>();
list.add(3);

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Question 22 (1 point)

Will the following code have a compile error?

ArrayList list = new ArrayList();
list.add(3);
list.add("3");

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Question 23 (1 point)

Will the following code have a runtime error?

Comparable c = new Date();
int i = c.compareTo("time");

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Question 24 (1 point)

You can substitute a generic type with a primitive data type.

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Question 25 (1 point)

ArrayList<Integer> is a subtype of ArrayList<Double>.

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Explanation / Answer

20) Yes. You should use Integer instead of int. int is a primite data type, so it cannot be put in a ArrayList. The correct declaration is ArrayList<Integer> list = new ArrayList<Integer>();

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