请各位高手不吝赐教，JAVA程序问题
总共两个文件TaxTest.java与Tax.java
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TaxTest.java
===========================================
import javax.swing.JOptionPane;
public class TestTax{
public static void main(String[] args){
String yearString = JOptionPane.showInputDialog("Enter the year ,etc 2001 or 2002");
int year = Integer.parseInt(yearString);
Tax change = new Tax();
change.setBrackets(year);
change.setRates(year);
int[][] brackets = change.getBrackets();
double[] rates = change.getRates();
double taxableIncome = change.getTaxableIncome();
double tax = 0;
System.out.println(year + " year Ameica duty of four persons");
System.out.println("-----------------------------------------------------");
System.out.println("taxableIncome SINGLE_FILER MARRIED_JOINTLY MARRIED_SEPARATELY HEAR_OF_HOUSHOLD");
System.out.println("-----------------------------------------------------");
for(double i = taxableIncome;i <= 60000;){
System.out.println(taxableIncome );
for(int filingStatus = 0;filingStatus <= 3;filingStatus ++){
if(taxableIncome <= brackets[filingStatus][0])
tax = taxableIncome * rates[0];
else tax = brackets[filingStatus][0] * rates[0];
for(int j = 1;j < brackets[0].length;j ++){
if(taxableIncome < brackets[filingStatus][j])
tax += (brackets[filingStatus][j]-brackets[filingStatus][j-1])*rates[j];
else tax += (taxableIncome -brackets[filingStatus][j-1])*rates[j];
}
System.out.println(" " + tax);
}
taxableIncome += 1000;
System.out.println();
}
System.out.println("-----------------------------------------------------");
}
}
Tax.java
=============================================
public class Tax{
private int filingStatus = 0;
private int[][] brackets;
private double[] rates;
private double taxableIncome;
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