Java 基于阵列的纳税人信息存储

那么，如果我在

do while

循环之前，询问“x”税额初始化

子项
和
grossIncomes
数组，该怎么办呢

扩展do while循环，直到
JOptionPane.showMessageDialog（null，message）

不要使用
numTaxpayers
作为
子项和
grossIncomes
的索引。在循环开始之前，使用
count
，并将count初始化为0

            int[] children = new int[numTaxpayers];
            double[] grossIncomes = new double[numTaxpayers];
            int count = 0;
            while (count < numTaxpayers)
            {
                int numChildren = Integer.parseInt(JOptionPane.showInputDialog("How many children do you have?"));
                double grossIncome = Double.parseDouble(JOptionPane.showInputDialog("What is your gross income?"));

                children[count] = numChildren;
                grossIncomes[count] = grossIncome;

                count ++;
                // Calculations goes here
                //....
                //...
                JOptionPane.showMessageDialog(null,message);
             }

int[]children=newint[numTaxpayers]；
double[]grossIncomes=新的double[numTaxpayers]；
整数计数=0；
while（计数
您正在重新分配循环中的
numChildren
和
grossIncome
变量，而不是存储它们：

    do
    {
        numChildren = Integer.parseInt(JOptionPane.showInputDialog("How many children do you have?"));
        grossIncome = Double.parseDouble(JOptionPane.showInputDialog("What is your gross income?"));
        count ++;
    } while (count <= numTaxpayers);

然后

final List<TaxPayer> taxpayers = new LinkedList<TaxPayer>();
for(int i = 0; i < numTaxpayers; ++i) {
    taxpayers.add(TaxPayer.requestTaxPayerDetails());
}

final List=new LinkedList（）；
对于（int i=0；i

稍微整洁一点，不？
这是正确的，但是一旦扩展了循环，就应该在while循环之前初始化数组（
double[]grossIncomes
和
int[]children
）。然后是while循环，使用
count
而不是
numTaxpayers
。所以不要使用do-while循环？使用什么都不重要。您需要保留读取的值。您正在重新分配每次迭代的值。在任何情况下，
for
循环都要简单得多。
public class TaxPayer {

   private final int numChildren;
   private final int grossIncome;

   private TaxPayer(final int numChildren, final int grossIncome) {
       this.numChildren = numChildren;
       this.grossIncome = grossIncome;
   }

   public static TaxPayer requestTaxPayerDetails() {
       final int numChildren = Integer.parseInt(JOptionPane.showInputDialog("How many children do you have?"));
       final int grossIncome = Double.parseDouble(JOptionPane.showInputDialog("What is your gross income?"));
       return new TaxPayer(numChildren, grossIncome);
   }

   public int findTaxDependency() {
       // do stuff
   }

   public double calculateTax() {
      // do stuff
   }
}

final List<TaxPayer> taxpayers = new LinkedList<TaxPayer>();
for(int i = 0; i < numTaxpayers; ++i) {
    taxpayers.add(TaxPayer.requestTaxPayerDetails());
}