Java Classic Programming question 50-way 14

Enter a certain day of the year, judging the day is the first of the year?

public class Example14 {
public static void Main (string[] args) {
Year (2017, 1, 1);
}

public static void year (int year, Int. month, int day) {
int d = 0;
int days = 0;
if (Year < 0 | | Month < 0 | | month > [|] Day < 0 | | Day > 31) {
SYSTEM.OUT.PRINTLN ("Input error, please re-enter!") ");
}
for (int i = 1; i < month; i++) {
switch (i) {
Case 1:
Case 3:
Case 5:
Case 7:
Case 8:
Case 10:
Case 12:
days = 31;
Break
Case 4:
Case 6:
Case 9:
Case 11:
days = 30;
Break
Case 2:
If ((year% 400 = = 0) | | (year% 4 = = 0 && Year% 100! = 0)) {
days = 29;
} else {
days = 28;
}
Break
}
D + = days;
}
SYSTEM.OUT.PRINTLN (Year + "years" + month + "Month" + Day + "date" + "
+ (d + day) + "days." ");
}
}

Java Classic Programming question 50-way 14