java - 无法将字符串格式化为 Java 中的预期输出

Question

我想将输出格式化为如下所示

  Account                      Date        Hours  Skill
  ---------------------------  ----------  -----  --------------------
  Acme Industries              03/06/2006      8  Software Engineer

但我明白了:

Account                     Date       Hours   Skill
---------------------------  ----------  -----  --------------------
Acme Industries             08/18/14   8       software Engineer

我的代码如下:

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class TestingStuff {

    public static void main(String[] args){
        Calendar calendar = Calendar.getInstance();
        calendar = new GregorianCalendar(2014, 07, 18);
        Date startDate = calendar.getTime();
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM/dd/yy");
        String formatted = simpleDateFormat.format(startDate);  
        String separator = "---------------------------  ----------  -----  --------------------\n";
        String result="";
        String header=String.format("%-27s %-10s %-7s %s%n", "Account","Date","Hours","Skill");

        String output=String.format("%-27s %-10s %-7s %s%n", "Acme Industries", 
                formatted,8,"Software Engineer");

        System.out.println(header+separator+output);
    }

}

我需要一些关于如何解决此类格式问题的提示，例如左右填充...

Answer 1

我会使用这样的东西

// get i dashes as a string.
private static String getDashes(int i) {
    StringBuilder sb = new StringBuilder();
    while (i > 0) {
        sb.append("-");
        --i;
    }
    return sb.toString();
}

public static void main(String[] args) {
    Calendar calendar = Calendar.getInstance();
    calendar = new GregorianCalendar(2014, 07, 18);
    Date startDate = calendar.getTime();
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM/dd/yy");
    String formatted = simpleDateFormat.format(startDate);

    // one format string
    String fmtString = "%-27s  %-10s  %5s  %s%n";
    // get the various dashes.
    String separator = String.format(fmtString, getDashes(26),
            getDashes(9), getDashes(5), getDashes(20));
    // format the header
    String header = String.format(fmtString, "Account", "Date", "Hours",
            "Skill");

    // format the body
    String output = String.format(fmtString, "Acme Industries", formatted,
            8, "software Engineer");

    // print
    System.out.println(header + separator + output);
}

哪些输出

Account                      Date        Hours  Skill
--------------------------   ---------   -----  --------------------
Acme Industries              08/18/14        8  software Engineer