java – SimpleDateFormat. Parse () – generates incorrect dates for different date formats

Here is my code for parsing dates using the simpledateformat pattern:

String pattern = "yyyy-MM-dd";    
SimpleDateFormat format = new SimpleDateFormat(pattern);
try {
    Date date = format.parse("05-21-2030");
    System.out.println(date);
} catch (ParseException e) {
    e.printStackTrace();
}

You can see that the date I passed to the parser is different from the date format specified in simpledateformat In this case, due to different formats, I want a dismissal, but it successfully parses with some different date values I got the output – Tue Mar 22 00:00:00 ist 12

When I pass the same format, such as 2030-05-21, it works normally

Can you tell me how to stop these things in my code?

Solution

Basically, you want simpledateformat to be strict, so set lenient to false

SimpleDateFormat format = new SimpleDateFormat(pattern);
format.setLenient(false);