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Author Question: Analyze the following code: Double[] array = {1, 2, 3}; ArrayList list = new ... (Read 209 times)

dejastew

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Question 1

Show the output of the following code:

String[] array = {"red", "green", "blue"};
ArrayList list = new ArrayList<>(Arrays.asList(array));
list.add(0, "red");
System.out.println(list);

◦ ["red", "green", "blue"]
◦ ["red", "red", "green", "blue"]
◦ ["red", "green", "blue", "red"]
◦ ["red", "green", "red", "blue"]

Question 2

Analyze the following code:

Double[] array = {1, 2, 3};
ArrayList list = new ArrayList<>(Arrays.asList(array));
System.out.println(list);

◦ The code is correct and displays [1, 2, 3].
◦ The code is correct and displays [1.0, 2.0, 3.0].
◦ The code has a compile error because asList(array) requires that the array elements are objects.

◦ The code has a compile error because an integer such as 1 is automatically converted into an Integer object, but the array element type is Double.


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Marked as best answer by dejastew on May 6, 2020

chreslie

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dejastew

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  • Posts: 562
Reply 2 on: May 6, 2020
Gracias!


pangili4

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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