Java 字符对象的 ArrayList
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ArrayList of Character Objects
提问by user3806226
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.
我想根据一串字母中的字符创建一个字符对象的 ArrayList。但是，我似乎无法弄清楚如何填充该 ArrayList 以匹配字符串。我一直试图让它遍历字符串，以便稍后，如果我更改字符串的内容，它会进行调整。无论如何，无论我做什么，我都会遇到某种语法错误。
Could anybody please guide me in the right direction? Thanks a bunch!
有人可以指导我正确的方向吗？谢谢一堆！
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));
}
}
采纳答案by Tony
In your case, words.charAt()is enough.
在你的情况下，words.charAt()就足够了。
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
