java - 是否可以设置程序输出中每行的最大字符数

Question

我正在尝试编写一个可以输出一篇文章的程序。我只是起诉 System.out.print();每个单独句子的函数，在每个段落的开头使用\t，在每个段落的结尾使用\n。

所以它看起来像这样:

System.out.print("\tParagraph 1 Sentence 1");
System.out.print("Paragraph 1 Sentence 2");
System.out.print("Paragraph 1 Sentence 3");
System.out.print("Paragraph 1 Sentence 4\n");

System.out.print("\tParagraph 2 Sentence 2");
System.out.print("Paragraph 2 Sentence 2");
System.out.print("Paragraph 2 Sentence 3");
System.out.print("Paragraph 2 Sentence 4\n");

但这会将每个段落打印在一行上。

我想知道是否可以设置每行打印的最大字符数，以便它会自动返回，就像我在 Word 中输入一样。

提前致谢!

Answer 1

不，没有办法告诉 API 在 80 个字符或类似的字符后添加换行符。

您必须使用自己的“段落打印机”来跟踪自行首以来已打印的字符数，然后输出换行符。

以下内容可以让您了解我的意思:

    String[] paragraphs = {
        "Paragraph 1 Sentence 1. Paragraph 1 Sentence 2. Paragraph 1 Sentence 3. Paragraph 1 Sentence 4.",
        "Paragraph 2 Sentence 1. Paragraph 2 Sentence 2. Paragraph 2 Sentence 3. Paragraph 2 Sentence 4"
    };

    for (String paragraph : paragraphs) {
        Scanner s = new Scanner(paragraph);
        System.out.print("        "); // instead of \t
        int col = 8;
        while (s.hasNext()) {
            String word = s.next();
            if (col + word.length() > 50) {
                System.out.println();
                col = 0;
            }
            System.out.print(word + " ");
            col += word.length() + 1;
        }
        System.out.println();
    }

输出:

        Paragraph 1 Sentence 1. Paragraph 1 
Sentence 2. Paragraph 1 Sentence 3. Paragraph 1 
Sentence 4. 
        Paragraph 2 Sentence 1. Paragraph 2 
Sentence 2. Paragraph 2 Sentence 3. Paragraph 2 
Sentence 4