java - 初始化字符数组时出现精度损失错误

Question

我正在构建一个程序，我必须逐字扫描文档，解析这些单词以删除非法字符，然后将每个单词分配给 HashMap 。为此，我将单词中的每个字母添加到字符数组列表中，然后使用增强的 for 循环将该数组列表转换为数组，然后将该数组转换为字符串。问题是，每当我尝试使用数组列表的大小来初始化字符数组时，它都会抛出可能的精度损失错误，并且似乎希望我以字符而不是整数的形式输入值。我该如何解决这个问题并使我的阵列正常工作？请帮忙!

  while ( in .hasNext()) {
    String input = in .next();
    Scanner characterizer = new Scanner(input);
    characterizer.useDelimiter("");
    int counter = 0;

    ArrayList < Character > placeHolder = new ArrayList < Character > ();

    while (counter < input.length()) {
        char character = characterizer.next().charAt(counter);
        if (character != '(' && character != ')' && character != '.' && character != '-' && character != '$' && character != '?' & character != '!' && character != ';' && character != ':' && character != '"' && character != '&' && character != '#' && character != '*') {
            placeHolder.add(character);
        }
        counter++;
    }
    final int LENGTH = placeHolder.size();
    char[] word = new char[] {
        LENGTH
    };
    //this code will used the enhanced for loop to copy the contents of placeHolder into word and then convert it to a string
  }

Answer 1

您初始化 char 数组的方式错误。

char[] word = new char[LENGTH];

大括号用于数组的内容。