Java Collaboration

// Justin Nugent// 10/16/07// Pd.1 AP Java import java.util.Scanner; public class IRS {private double incomeSingle;private double incomeMarried;private int martialStatus;private double incomeA;private double taxableIncomeSingle; private double taxableIncomeMarried; Scanner in = new Scanner(System.in); public IRS(){        incomeSingle = 0.0;        incomeMarried = 0.0;        incomeA = 0.0;        martialStatus = 0;        taxableIncomeSingle = 0.0;        taxableIncomeMarried = 0.0;} public int MartialStatus(){        System.out.println("Filling Status: ");        System.out.println("1.Single");        System.out.println("2.Married");        System.out.print("Enter your martial status number: ");        martialStatus = in.nextInt();        System.out.print("Enter your income: ");        incomeA = in.nextDouble();        switch(martialStatus){        case 1:              incomeSingle = incomeA;             incomeSingle();             break;        case 2:              incomeMarried(); // Doesn't exist!             break;        default:             System.out.println("That number is not one of the choices!");             break;        }} public double incomeSingle(){		double taxableIncome = 0.0;        if(incomeSingle > 0) && (incomeSingle <= 27050){        	double taxAdd = 0.0        	taxableIncome = taxAdd + .15(incomeSingle - taxAdd);        	System.out.println("Income: " + taxableIncome);        }        else if(incomeSingle > 27050) && (incomeSingle <= 27050){        	double taxAdd = 4057.5;        	taxableIncome = taxAdd + .275(incomeSingle - taxAdd);        }        else}  }