Java calculates age accurately based on date

1 ImportJava.text.SimpleDateFormat; 2 ImportJava.util.Calendar; 3 Importjava.util.Date; 4   5 /** 6 * Created by Qing on 2017/3/28.7  */  8  Public classAgeutils {9     //birthtimestring: "1994-11-14" according to the age of the month and dayTen      Public Static intgetagefrombirthtime (String birthtimestring) { One         //first intercept the year, month, and day in the string AString strs[] = Birthtimestring.trim (). Split ("-");  -         intSelectyear = Integer.parseint (strs[0]);  -         intSelectmonth = Integer.parseint (strs[1]);  the         intSelectday = Integer.parseint (strs[2]);  -         //get the current time of year, month, day -Calendar cal =calendar.getinstance ();  -         intYearnow =Cal.get (calendar.year);  +         intMonthnow = Cal.get (calendar.month) + 1;  -         intDaynow =Cal.get (calendar.date);  +    A         //subtract birthday date from current month at         intYearminus = Yearnow-selectyear;  -         intMonthminus = Monthnow-Selectmonth;  -         intDayminus = Daynow-Selectday;  -    -         intage = Yearminus;//approximate Assignment First -         if(Yearminus < 0) {//Choose the year of the future inAge = 0;  -}Else if(Yearminus = = 0) {//the same year, either 1, or 0 . to             if(Monthminus < 0) {//Choose the next month. +Age = 0;  -}Else if(Monthminus = = 0) {//of the same month the                 if(Dayminus < 0) {//Choose a date for the future *Age = 0;  $}Else if(Dayminus >= 0) {  Panax NotoginsengAge = 1;  -                 }   the}Else if(Monthminus > 0) {   +Age = 1;  A             }   the}Else if(Yearminus > 0) {   +             if(Monthminus < 0) {//Current Month > Birthday month -}Else if(Monthminus = = 0) {//the same month, and then the age based on the date $                 if(Dayminus < 0) {   $}Else if(Dayminus >= 0) {   -Age = Age + 1;  -                 }   the}Else if(Monthminus > 0) {   -Age = Age + 1; Wuyi             }   the         }   -         returnAge ;  Wu     }   -    About     //calculate age based on timestamp $      Public Static intGetagefrombirthtime (LongBirthtimelong) {   -Date Date =NewDate (Birthtimelong * 1000l);  -SimpleDateFormat format =NewSimpleDateFormat ("Yyyy-mm-dd");  -String birthtimestring =Format.format (date);  A         returnGetagefrombirthtime (birthtimestring);  +     }   the}

Accurate to Month:

1 //birthtimestring: "1994-11-14" according to the age of the month and day2      Public Staticstring Getagefrombirthtime (String birthtimestring) {3         //first intercept the year, month, and day in the string4String strs[] = Birthtimestring.trim (). Split ("-");5         intSelectyear = Integer.parseint (strs[0]);6         intSelectmonth = Integer.parseint (strs[1]);7         intSelectday = Integer.parseint (strs[2]);8         //get the current time of year, month, day9Calendar cal =calendar.getinstance ();Ten         intYearnow =Cal.get (calendar.year); One         intMonthnow = Cal.get (calendar.month) + 1; A         intDaynow =Cal.get (calendar.date); -  -         //subtract birthday date from current month the         intYearminus = Yearnow-selectyear; -         intMonthminus = Monthnow-Selectmonth; -         intDayminus = Daynow-Selectday; -String agetomonth= "January"; +  -         intage = Yearminus;//approximate Assignment First +         if(Yearminus < 0) {//Choose the year of the future AAge = 0; atAgetomonth = "January"; -}Else if(Monthminus > 0) { -Age = 1; -Agetomonth = string.valueof (monthminus) + "Month"; -}Else if(Yearminus > 0) { -             if(Monthminus < 0) {//Current Month > Birthday month in}Else if(Monthminus = = 0) {//the same month, and then the age based on the date -                 if(Dayminus < 0) { to}Else if(Dayminus >= 0) { +Age = Age + 1; -Agetomonth = string.valueof (age) + "years old"; the                 } *}Else if(Monthminus > 0) { $Age = Age + 1;Panax NotoginsengAgetomonth = string.valueof (age) + "years old"; -             } the         } +         returnAgetomonth; A}

1  Public Static void Main (string[] args) {2         String Dataofbirth = "2017-10-28"; 3         String age = getagefrombirthtime (dataofbirth); 4         System.out.println ("Age:" + age ); 5     }

Java calculates age accurately based on date