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Fill in the blank to declare the ArrayList to hold the correct type. 1 point<int><char><Char>[int]<Integer>[Integer]

Question

Fill in the blank to declare the ArrayList to hold the correct type.

1 point

<int> <char> <Char> [int] [Integer] [Integer]

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Solution

Break Down the Problem

  1. The problem requires us to fill in the blank with the correct declaration for an ArrayList.
  2. We need to identify which type the ArrayList should hold based on the options provided.

Relevant Concepts

  1. An ArrayList in Java is a resizable array implementation of the List interface.
  2. The correct type for an ArrayList should be specified using angle brackets <>.

Analysis and Detail

  1. The valid options provided are int, char, Char, Integer, [int], and [Integer].
  2. In Java, primitive types such as int and char cannot be used directly with ArrayList. Instead, we use their wrapper classes.
    • Integer is the wrapper class for int.
    • Character is the wrapper class for char.
  3. Both Integer and Character can be used with ArrayList.

Verify and Summarize

After analyzing the provided options:

  • Although Char is mentioned, it is not a valid type for an ArrayList.
  • The other remaining option is Integer, which is valid for the ArrayList declaration.

Final Answer

ArrayList<Integer> myList = new ArrayList<>();

This problem has been solved

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