Storing objects in ArrayList instead of Array

Question

I currently have a program that stores objects in an array that I need to store in an ArrayList instead.

This is how the objects were originally stored.

private String phrase = "Once upon a time";
private Letter[] letter_array = new Letter[16];

for (int i = 0; i < phrase.length(); i++) {
  letter_array[i] = new Letter(phrase.charAt(i));
  }

So now, I'm trying to use something like this instead.

private String phrase = "Once upon a time";
ArrayList<Letter> aToZ = new ArrayList<Letter>();

for (int i = 0; i < phrase.length(); i++) {
  Letter x = new Letter.charAt(i);
  aToZ.add(x);
  }

Some of the code has been omitted, but these are the pertinent parts.

This doesn't work and I've tried variations, but I just really don't know how to do this.

Why doesn't it work? Do you have any stacktrace or output in your console log? It's difficult to help you if we don't know what the problem is — Demitrian
– Demitrian, Commented Feb 21, 2016 at 20:24

Faraz · Accepted Answer · 2016-02-21 19:05:41Z

4

Instead of

Letter x = new Letter.charAt(i);

you need

Letter x = new Letter(phrase.charAt(i));

in your 2nd code snippet

answered Feb 21, 2016 at 19:05

Faraz

6,3156 gold badges44 silver badges99 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Robert Plant · Accepted Answer · 2016-02-21 19:18:10Z

1

Letter x = new Letter(phrase.charAt(i));

You almost had it! You need to include the "phrase." before charAt, but everything else seems to be correct.

Try to think of the object > string > charAt sequence carefully when you reread your code. Ask yourself when you read over your code: "what is it exactly about the object that I want to reference/change?"

answered Feb 21, 2016 at 19:18

Robert Plant

677 bronze badges

Collectives™ on Stack Overflow

Storing objects in ArrayList instead of Array

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related