Java System.out.print格式 [英] Java System.out.print formatting

问题描述

我必须显示所有360每月付款，但如果我没有所有的月份数量在同一长度，那么我最终会有一个输出文件，继续向右移动和抵消输出的外观。

Here is my code (well, some of it). The question I have is, can I get the first 9 numbers to show with a leading 00 and numbers 10 - 99 with a leading 0.

I have to show all of the 360 monthly payments, but if I don't have all month numbers at the same length, then I end up with an output file that keeps moving to the right and offsetting the look of the output. 

结果：

System.out.print((x + 1) + " "); // the payment number System.out.print(formatter.format(monthlyInterest) + " "); // round our interest rate System.out.print(formatter.format(principleAmt) + " "); System.out.print(formatter.format(remainderAmt) + " "); System.out.println();

Results:

我想看的是：

8 $951.23 $215.92 $198,301.22 9 $950.19 $216.95 $198,084.26 10 $949.15 $217.99 $197,866.27 11 $948.11 $219.04 $197,647.23

What I want to see is:

你需要从我的课堂上看到哪些其他的代码可以帮助你？

008 $951.23 $215.92 $198,301.22 009 $950.19 $216.95 $198,084.26 010 $949.15 $217.99 $197,866.27 011 $948.11 $219.04 $197,647.23

推荐答案

java.text.DecimalFormat中;

DecimalFormat xFormat = new DecimalFormat（000）
System.out.print（xFormat.format（x + 1）+）;

import java.text.DecimalFormat; DecimalFormat xFormat = new DecimalFormat("000") System.out.print(xFormat.format(x + 1) + " ");

另外，您可以使用printf整行完成整个工作：

Alternative you could do whole job in whole line using printf:

System.out.printf("%03d %s  %s    %s    \n",  x + 1, // the payment number
formatter.format(monthlyInterest),  // round our interest rate
formatter.format(principleAmt),
formatter.format(remainderAmt));

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