12/4 Homework Java Overloading

package QQ;
import java.io.BufferedReader;import java.io.InputStreamReader;import java.io.IOException;
public class Date {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("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(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;}elseSystem.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);}elsethis.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);}elsethis.day = day;}
public void setYear(int year){if ( (year <= 1000) (year >= 9999)){System.out.println("Fatal Error");System.exit(0);}elsethis.year = year;}
public boolean equals(Date otherDate){return ( (month.equalsIgnoreCase(otherDate.month))&& (day == otherDate.day) && (year == otherDate.year));}
public boolean precedes(Date 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("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 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";}}
}