Lab 12-5-2005 (2) Overloading

public class OverloadedingDemo{
public static void main(String[] args){
DateSixthTry date1=new DateSixthTry(),
date2=new DateSixthTry(),
date3=new DateSixthTry();
date1.setDate(1,2,2007);
date1.setMonth(3);
date2.setDate("February",2,2007);
date2.setMonth("April");
date3.setDate(2007);
System.out.println(date1);
System.out.println(date2);
System.out.println(date3);
}
}
//////////////////////////////////////////////////////////
import java.io.*;
public class DateSixthTry {
private String month;
private int day;
private int year; //a four digit number.
public void setDate(int monthInt, int day, int year) {
if (dateOK(monthInt, day, year)) {
this.month = month(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) &&amp; (monthInt <= 12) &&(dayInt >= 1) && (dayInt <= 31) &&(yearInt >= 1000) && (yearInt <= 9999) ); } private boolean dateOK(String monthString, int dayInt, int yearInt) { return ( monthOK(monthString) &&amp; (dayInt >= 1) && (dayInt <= 31) && (yearInt >= 1000) && (yearInt <= 9999) ); } private boolean monthOK(String month) { return (month.equals("January") month.equals("February") month.equals("March") month.equals("April") 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(newInputStreamReader(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 = month(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 <> 9999) ) {
System.out.println("Fatal Error");
System.exit(0); }
else
this.year = year; }

public boolean equals(DateSixthTry otherDate) {
return ( (month.equalsIgnoreCase(otherDate.month)) &&amp; (day == otherDate.day) && (year == otherDate.year)); }

public boolean precedes(DateSixthTry otherDate) {
return ( (year < otherDate.year) (year == otherDate.year &&amp; getMonth( ) < otherDate.getMonth()) (year == otherDate.year && month.equals(otherDate.month) &&amp; 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("February"))
return 2;
else
if (month.equalsIgnoreCase("March"))
return 3;
else
if (month.equalsIgnoreCase("April"))
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 month(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";
}
}
}