CODEWITHSUNDEEP
javaarraylistcharacter
user3806226
user3806226

Reputation: 235

ArrayList of Characters

I want to create an ArrayList of character objects based off the characters in a string of letters. But, I can't seem to figure out how to fill that ArrayList to match the String. I've been trying to have it iterate through the string so that later, if I change the content of the string it'll adjust. Regardless, no matter what I do I'm getting some sort of syntax error.

Could anybody please guide me in the right direction? Thanks a bunch!

import java.util.ArrayList;
import java.text.CharacterIterator;   //not sure if this is necessary??

public class Test{

//main method

     String words = new String("HELLO GOODBYE!");
     ArrayList<Character> sample = new ArrayList<Character>();

     for(int i = 0; i<words.length(); i++){
         sample.add((char)Character.codePointAt(sample,i));
     }
}

Upvotes: 10

Views: 117647

Answers (2)

live-love
live-love

Reputation: 52366

This code adds all the characters in a character array to an ArrayList.

Character[] letters = {'a', 'b', 'c', ...};
List<Character> array = new ArrayList<Character>();
array.addAll(Arrays.asList(letters));

Upvotes: 1

Tony
Tony

Reputation: 6148

In your case, words.charAt() is enough.

  import java.util.ArrayList;

  public class Test{

       String words = new String("HELLO GOODBYE!");
       ArrayList<Character> sample = new ArrayList<Character>();

       for(int i = 0; i<words.length(); i++){
           sample.add(words.charAt(i));
       }
  }

Read more: Stirng, Autoboxing

Upvotes: 16

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