SOURCE CODE FILES FOR Debugging EXAMPLES

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// Project WagesForMonth
// Class Main

import java.util.StringTokenizer;
import java.text.DecimalFormat;
public class Main
{
    public static void main(String[] args)
    {
        String inputString;
        int hours;
        double hourlyWage, paymentForMonth = 0.0,
            totalForMonth = 0.0;
       
        System.out.print("Payments for month:");
        inputString = JOptionPane.showInputDialog(
            "Enter hours and hourly wage.");
        while(inputString != null && !inputString.equals(""))
        {
            StringTokenizer st = new StringTokenizer(
                inputString, " ");
            hours = Integer.parseInt(st.nextToken());
            hourlyWage = Integer.parseInt(st.nextToken());
            
            if (hours <= 40)
                totalForMonth = 40 * hourlyWage + 
                    1.5 * hourlyWage * hours - 40;
            else
                totalForMonth = hourlyWage * hours;
                
            inputString = JOptionPane.showInputDialog(
                "Enter hours and hourly wage.");
        }
        System.out.println("/n/nTotal for month: " + paymentForMonth);
    }
}

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// Project MetricConverter
// Class English

public class English
{
    // Instance variables for English length object.
    private int yards;
    private int feet;
    private int inches;
    private int numerator;
    private int denominator;
    
    // Usual parameterized constructor.
    public English(int y, int i, int f, int n, int d)
    {
        yards = y;
        feet = f;
        inches = i;
        numerator = n;
        denominator = d;
    }
    
    public English(int meters)
    {
        double yardsDouble, feetDouble, inchesDouble,
               yardsRemainder, feetRemainder, inchesRemainder;
               
        yardsDouble = 1.0936133;
        yards = (int) yardsDouble;
        yardsRemainder = yardsDouble - yards;
        feetDouble = 3 * yardsRemainder;
        feet = (int) feetDouble;
        feetRemainder = feetDouble - feet;
        inchesDouble = feetRemainder * 12;
        inches = (int) inchesDouble;
        inchesRemainder = inchesDouble - inches;
        denominator = 64;
        numerator = (int) (inchesRemainder * 64 + 0.5);
    }
    
    public double getMeters()
    {
        return (yards + feet / 3.0 + 
            (inches + numerator / denominator) / 36.0) *
            1.0936133;
    }
    
    public String toString()
    {
        return yards + "yd " + feet + "ft " +
            inches + "-" + numerator + "/" +
            denominator + "in" ;
    }
}

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// Project Twin Primes
// Class Main

public class Main
{
    public static void main(String[] args)
    {
        int n;
        
        for(n = 3; n <= 1000; n++)
            if(isPrime(n) && isPrime(n + 2))
                System.out.println(n + " " + (n + 2));
    }
    
    public static boolean isPrime(int n)
    {
        int factor, sqrtn;
        sqrtn = (int) Math.sqrt(n);
        for(factor = 2; factor <= sqrtn; factor++)
            if (factor % n == 0)
                return false;
        return true;
    }
}

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// Project MaxSalary
// Class Main

import javax.swing.JOptionPane;
import java.util.StringTokenizer;
public class Main
{
    public static void main(String[] args)
    {
        String aName, s;
        double aSalary;
        StringTokenizer st;
        MaxSalary ms = new MaxSalary("", -1.0);
        
        s = JOptionPane.showInputDialog(
            "Enter name and salary.");
        while(s != null && !s.equals(""))
        {
            //StringTokenizer 
            st = new StringTokenizer(s, " ");
            aName = st.nextToken();
            aSalary = Double.parseDouble(st.nextToken());
            ms.update(aName, aSalary);
            s = JOptionPane.showInputDialog(
                "Enter name and salary.");
        }
        System.out.println(s);
    }
}

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// Project MaxSalary
// Class MaxSalary

public class MaxSalary
{
    String name;
    double salary;
    
    public MaxSalary(String aName, double aSalary)
    {
        name = aName;
        salary = aSalary;
    }
    
    public void update(String aName, double aSalary)
    {
        if (aSalary > salary)
        {
            aSalary = salary;
            aName = name;
        }
    }
    
    public String toString()
    {
        return "Maximum salary is $" + salary +
            "\nPerson with maximum salary is " + name + ".";
    }
}

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