Homework7

import java.io.*;
public class Date
{private String month;
private int day;
private int year;
public Date ( )
{month = "January";
day = 1;year = 1000;
}
public Date (int monthInt, int day, int year){setDate(monthInt, day, year);
}public Date (String monthString, int day, int year){setDate(monthString, day, year);
}
public Date (int year){setDate(1, 1, year);
}
public Date (Date aDate){if (aDate == null)
{
System.out.println("Fatal Error.");
System.exit(0);
}month = aDate.month;
day = aDate.day;
year = aDate.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);
}
public void setYear(int year){if ( (year <> 9999) )
{
System.out.println("Fatal Error");System.exit(0);
}
elsethis.year = year;
}public void setMonth(int monthNumber)
{
if ((monthNumber <= 0) (monthNumber > 12)){System.out.println("Fatal Error");
System.exit(0);
}
elsemonth = monthString(monthNumber);
}
public void setDay(int day){if ((day <= 0) (day > 31))
{
System.out.println("Fatal Error");System.exit(0);}elsethis.day = day;}public int getMonth( ){if (month.equals("January"))return 1;
else if (month.equals("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.equals("November"))return 11;
else if (month.equals("December"))return 12;
else{System.out.println("Fatal Error");System.exit(0);
return 0;}}public int getDay( ){return day;
}public int getYear( ){return year;
}public String toString( ){return (month + " " + day + ", " + year);
}public boolean equals(Date otherDate){return ( (month.equals(otherDate.month)) &&amp;
(day == otherDate.day) && (year == otherDate.year) );
}
public boolean precedes(Date otherDate)
{return ( (year < year ="=">(year == otherDate.year && month.equals(otherDate.month) && day <>}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 = Integer.parseInt(keyboard.readLine());
int yearInput = Integer.parseInt(keyboard.readLine());
if (dateOK(monthInput, dayInput, yearInput) )
{setDate(monthInput, dayInput, yearInput);
tryAgain = false;
}
elseSystem.out.println("Illegal date. Reenter input.");
}}
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") );
}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";
}}}
================================================
public class dis414
{
public static void main(String[]args)
{
Date date1=new Date("December", 16, 1770),date2=new Date(1, 27, 1756),date3=new Date (1882),date4=new Date ();
System.out.println( date1);
System.out.println( date2);
System.out.println( date3);
System.out.println( date4);
}}