java - 循环后如何将这些单词构建为一个句子？

Question

我循环遍历一个句子，将其拆分为大写。但是在获取单个单词后很难将其重新构建。

String str = "Not the answer you're looking for.";
     StringBuilder stringBuilder = new StringBuilder();
 String oneWord =" ";
    for (String word : str.toLowerCase().split(" ")){
        char firstLetter = word.substring(0,1).toUpperCase().charAt(0);
       oneWord  = firstLetter + word.substring(1);

        System.out.println(stringBuilder.append(oneWord + " "));

    }

}

我希望只得到一个完全构建的字符串“不是您正在寻找的答案。”

Answer 1

  String str = "Not the answer you're looking for.";
  StringBuilder stringBuilder = new StringBuilder();
  String oneWord =" ";
  for (String word : str.toLowerCase().split(" ")){
    char firstLetter = word.substring(0,1).toUpperCase().charAt(0);
    oneWord  = firstLetter + word.substring(1);
    stringBuilder.append(oneWord + " ");
  }
  System.out.println(stringBuilder.toString());

您不会只得到一个字符串，因为您在 for 循环中使用了 System.out.println。

考虑我上面的例子