Convert string dates in java [duplicate]

Answer 1

m - minutes
M - month

Please read date and time patterns http://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html

Answer 2

Read the SimpleDateFormat javadoc:

Month is uppercase M:

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

...

formatter = new SimpleDateFormat("M/d/yyyy");

Lower case m is minute.

Answer 3

And because old java date is broken and we all should stop learning that, and since new features in java8 will be helpfull for all us in the future, here another option using javaTime api

String date1 = "2017-05-02";
String date2 = "5/2/2017";
LocalDate d1 = LocalDate.parse(date1, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
LocalDate d2 = LocalDate.parse(date2, DateTimeFormatter.ofPattern("M/d/yyyy"));

System.out.println(d1);
System.out.println(d2);
System.out.println(d2.isEqual(d1));