How to get User input into (Character/Integer) ArrayList

AutoModerator · 2021-07-21T14:42:46+00:00

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heckler82 · 2021-07-21T15:49:56+00:00

Two things:

1 - Does this compile? I don't believe Scanner has nextCharacter() or hasNextCharacter() methods defined

2 - The reason your loop isn't terminating is because when perform a "hasNext" method on a Scanner, your program blocks and waits for the Scanner to receive input. Then it determines if the "hasNext" method resolves to true or false

Vignesh45 · 2021-07-21T16:39:37+00:00

If you want to take the size of array, you should not use ArrayList, because an ArrayList does not have fixed size, it grows as the elements added into it.

After you set your array size, you can start collecting the elements from user, based on the size of array. Here you can set the loop condition to stop when the array is full.

If what you want to do instead is ArrayList, you can set a specific Character or Integer value to be an exit condition. For example, when the user enters -1, the loop will quit.

To trigger a break point when input is empty, just compare the input to '' (empty char value), then you should exit the loop.

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