Lab 12-5-2005 (2) Overloading

package untitled3;
import java.io.*;
public class DateSixthTry
{
private String month;
private int day;
private int year;

public void setDate(int monthInt, int day, int year)
{
if (dateOK(monthInt, day, year))
{
this.month = monthString(monthInt);
this.day = day;
this.year = year;
}
else
{
System.out.println("Fatal Error");
System.exit(0);
}
}

public void setDate(String monthString, int day, int year)
{
if (dateOK(monthString, day, year))
{
this.month = monthString;
this.day = day;
this.year = year;
}
else
{
System.out.println("Fatal Error");
System.exit(0);
}
}

public void setDate(int year)
{
setDate(1, 1, year);
}

private boolean dateOK(int monthInt, int dayInt, int yearInt)
{
return ( (monthInt >= 1) && (monthInt <= 12) &&
(dayInt >= 1) && (dayInt <= 31) &&
(yearInt >= 1000) && (yearInt <= 9999) );
}

private boolean dateOK(String monthString, int dayInt, int yearInt)
{
return ( monthOK(monthString) &&
(dayInt >= 1) && (dayInt <= 31) &&
(yearInt >= 1000) && (yearInt <= 9999) );
}

private boolean monthOK(String month)
{
return (month.equals("January") || month.equals("Feb") ||
month.equals("March") || month.equals("Apr") ||
month.equals("May") || month.equals("June") ||
month.equals("July") || month.equals("August") ||
month.equals("September") || month.equals("October") ||
month.equals("November") || month.equals("December") );
}


public void readInput( )throws IOException
{
boolean tryAgain = true;
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
while (tryAgain)
{
System.out.println("Enter month, day, and year.");
System.out.println("Do not use a comma.");
String monthInput = keyboard.readLine( );
int dayInput = keyboard.read( );
int yearInput = keyboard.read( );
if (dateOK(monthInput, dayInput, yearInput) )
{
setDate(monthInput, dayInput, yearInput);
tryAgain = false;
}
else
System.out.println("Illegal date. Reenter input.");
}
}


public void writeOutput( )
{
System.out.println(month + " " + day + ", " + year);
}

public void setMonth(int month)
{
if ((month <= 0) || (month > 12))
{
System.out.println("Fatal Error");
System.exit(0);
}
else
this.month = monthString(month);
}
public void setMonth(String month)
{
this.month = month;
}

public void setDay(int day)
{
if ((day <= 0) || (day > 31))
{
System.out.println("Fatal Error");
System.exit(0);
}
else
this.day = day;
}

public void setYear(int year)
{
if ( (year < 1000) || (year > 9999) )
{
System.out.println("Fatal Error");
System.exit(0);
}
else
this.year = year;
}

public boolean equals(DateSixthTry otherDate)
{
return ( (month.equalsIgnoreCase(otherDate.month))
&& (day == otherDate.day) && (year == otherDate.year) );
}
public boolean precedes(DateSixthTry otherDate)
{
return ( (year < otherDate.year) ||
(year == otherDate.year && getMonth( ) < otherDate.getMonth( )) ||
(year == otherDate.year && month.equals(otherDate.month)
&& day < otherDate.day) );
}

public String toString( )
{
return (month + " " + day + ", " + year);
}

public int getDay( )
{
return day;
}

public int getYear( )
{
return year;
}

public int getMonth( )
{
if (month.equalsIgnoreCase("January"))
return 1;
else if (month.equalsIgnoreCase("Feb"))
return 2;
else if (month.equalsIgnoreCase("March"))
return 3;
else if (month.equalsIgnoreCase("Apr"))
return 4;
else if (month.equalsIgnoreCase("May"))
return 5;
else if (month.equals("June"))
return 6;
else if (month.equalsIgnoreCase("July"))
return 7;
else if (month.equalsIgnoreCase("August"))
return 8;
else if (month.equalsIgnoreCase("September"))
return 9;
else if (month.equalsIgnoreCase("October"))
return 10;
else if (month.equalsIgnoreCase("November"))
return 11;
else if (month.equalsIgnoreCase("December"))
return 12;
else
{
System.out.println("Fatal Error");
System.exit(0);
return 0;
}
}


private String monthString(int monthNumber)
{
switch (monthNumber)
{
case 1:
return "January";
case 2:
return "February";
case 3:
return "March";
case 4:
return "April";
case 5:
return "May";
case 6:
return "June";
case 7:
return "July";
case 8:
return "August";
case 9:
return "September";
case 10:
return "October";
case 11:
return "November";

case 12:
return "December";
default:
System.out.println("Fatal Error");
System.exit(0);
return "Error";
}
}
}


package untitled3;

public class overloadingdemo {
public static void main(String[]args) {
DateSixthTry date1=new DateSixthTry();
DateSixthTry date2=new DateSixthTry();
DateSixthTry date3=new DateSixthTry();

date1.setDate(1,2,2007);
date1.setMonth(3);
date2.setDate("Feb",2,2007);
date2.setMonth("Apr");
date3.setDate(2007);

System.out.println(date1);
System.out.println(date2);
System.out.println(date3);




}
}