java printf 需要帮助

Question

public class Format
{
    public static void main(String args[])
    {
        System.out.printf("%30s|%30s","Organization","Number of users");
        System.out.printf("%30s|%30s","Arcot","100");
    }
}

它打印：

          Organization|               Number of users                          Arcot|                           100

为什么第二行没有对齐？尽管单词“100”有足够的填充，但单词“Arcot”没有提供足够的填充。抱歉，此文本窗口应用其自己的格式，它没有显示我粘贴为输出的内容。您可能需要运行代码才能查看获得的输出。

Answer 1

试试这些。

System.out.println(String.format("%30s|%30s","Organization","Number of users"));
    System.out.println(String.format("%30s|%30s","Arcot","100"));

Answer 2

System.out.printf("%30s|%30s\n","Organization","Number of users");
System.out.printf("%30s|%30s\n","Arcot","100");

您必须在 printf 的第一个参数末尾插入 \n 发出换行符。

有关使用转义字符的详细信息。

Answer 3

这按预期工作：

System.out.printf("%30s|%30s%n","Organization","Number of users");
System.out.printf("%30s|%30s%n","Arcot","100");

产生结果

              Organization|               Number of users
                     Arcot|                           100

在我的机器上 。您没有添加换行符。 %n 是格式字符串中的首选表示法。