constructor - JAVA call factory methods implicitly -

i have 1 constructor , 1 factory method date class. first 1 have 3 int parameter represent month, day , year. , second one, provide in case user give string 1 parameter represent month/day/year.

as can see in main(), forget call parseit, factory method. compiler still provide correct result. question is: can java call factory method implicitly?

please take 1st constructor , 2nd factory methods:

import java.io.*;  class date {    private int month;   private int day;   private int year;    public date(int month, int day, int year) {     if (isvaliddate(month, day, year)) {       this.month = month;       this.day = day;       this.year = year;     } else {       system.out.println("fatal error:  invalid data.");       system.exit(0);     }   }    public static date parseit(string s) {     string[] strsplit = s.split("/");     int m = integer.parseint(strsplit[0]);     int d = integer.parseint(strsplit[1]);     int y = integer.parseint(strsplit[2]);     return new date(m, d, y);   }    public static boolean isleapyear(int year) {     if (year%4 != 0) {       return false;     } else if (year%100 == 0 && year%400 != 0) {       return false;     }     return true;   }    public static int daysinmonth(int month, int year) {     if (month == 2) {       if (isleapyear(year)) {         return 29;       } else {         return 28;       }     } else if (month == 4 || month == 6 || month == 9 || month == 11) {       return 30;     } else {       return 31;     }   }    public static boolean isvaliddate(int month, int day, int year) {     if (year < 1 || year > 9999 || month <= 0 || month > 12 || day <= 0) {       return false;     } else if (day > daysinmonth(month, year)) {       return false;     }     return true;     }    public static void main(string[] argv) {     date d1 = new date(1, 1, 1);     system.out.println("date should 1/1/1: " + d1);     d1 = new date("2/4/2");     system.out.println("date should 2/4/2: " + d1);   } } 

no, not. there no constructor takes in string, throw syntax error. in order make work, have define constructor takes in string parameter performs same logic parseit(string) function.