how to return the number of days according on its month using java -

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• number of days in particular month of particular year? 11 answers

i given assignment homework:

create program in java accepts unsigned integer n , return number of days according month. example if n = 6, return value 30 because 6th month of june has 30 days. assume no leap year.

this attempt, doesn't work expected. can give me pointers why.

public class daysmonths {    public static void main(string []args) {      (int = 1; i<=12; i++){        int e = f(i);        system.out.println(i + " = " + e + " days ");    } }        public static int f(int i){        if ((i == 1)|(i == 3)|(i == 5)|(i == 7)|(i == 8)|(i == 10)|(i == 12))          return 31;        else if ((i == 4)|(i == 6)|(i == 9)|(i == 11))          return 30;        else          return 28;              }  } 

the below code uses java calendar class setting it's month input month , getting max date getactualmaximum() method. return 29 leap years.

public static void main(string args[]){         int month = 6;         calendar cal  = calendar.getinstance();         cal.set(calendar.month, month-1);         system.out.println(cal.getactualmaximum(calendar.date));     }