Java文本格式不正确

Question

我只是似乎无法弄清楚如何使java正确格式化我的输出。 输出的代码片段为： System.out.format("\\n %1s%20s%25s", intDf.format(i), df.format(monthlyPayment), df.format(totalPayment)) ; 输出如下所示：

Interest Rate Monthly Payment Total Payment 5 188.71 11322.74 5.125 189.29 11357.13 5.25 189.86 11391.59 5.375 190.44 11426.11 5.5 191.01 11460.7 5.625 191.59 11495.35 5.75 192.17 11530.06 5.875 192.75 11564.84 6 193.33 11599.68 6.125 193.91 11634.59 6.25 194.49 11669.56 6.375 195.08 11704.59 6.5 195.66 11739.69 6.625 196.25 11774.85 6.75 196.83 11810.08 6.875 197.42 11845.37 7 198.01 11880.72 7.125 198.6 11916.14 7.25 199.19 11951.62 7.375 199.79 11987.16 7.5 200.38 12022.77 7.625 200.97 12058.44 7.75 201.57 12094.18 7.875 202.17 12129.97 8 202.76 12165.84

我希望所有值在其对应行的第一个字母处对齐。 任何帮助表示赞赏，谢谢！

Answer 1

显然，第一列的宽度超过一个字符。 所以当你说

System.out.format("\n %1s

那把它扔掉了。 列名“利率”为13个字符。 所以尝试

System.out.format("\n %14s

编辑

根据您的评论，我将使用DecimalFormat和NumberFormat

String[] headings = { "Interest Rate", "Monthly Payment",
        "Total Payment" };
for (String heading : headings) {
    System.out.print(heading);
    System.out.print("\t");
}
System.out.println();
double[] interestRates = { 5, 5.125 };
double[] monthlyPayments = { 188.71, 189.29 };
double[] totalPayments = { 11322.74, 11357.13 };
NumberFormat interestFormat = new DecimalFormat("#.000'%'");
NumberFormat currencyFormat = NumberFormat.getCurrencyInstance();
for (int i = 0; i < interestRates.length; i++) {
    System.out.printf("%-13s\t%-15s\t%-13s%n",
            interestFormat.format(interestRates[i]),
            currencyFormat.format(monthlyPayments[i]),
            currencyFormat.format(totalPayments[i]));
}

输出是

Interest Rate   Monthly Payment Total Payment   
5.000%          $188.71         $11,322.74   
5.125%          $189.29         $11,357.13   

Answer 2

我从

  System.out.format("\n %1s%20s%25s", intDf.format(i), df.format(monthlyPayment), df.format(totalPayment));

到System.out.format("\\n %-5s%20s%25s", intDf.format(i), df.format(monthlyPayment), df.format(totalPayment));

然后将DecimalFormat更改为： "'$'0.00"