string to date conversion java

To convert a string to a date in Java, you can use the SimpleDateFormat class. This class allows you to specify a format for the input string and parse it into a java.util.Date object.

Here's an example of how to use the SimpleDateFormat class to convert a string to a date:

String s = "2022-12-20";
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
try {
    Date date = df.parse(s);
} catch (ParseException e) {
    e.printStackTrace();
}

In this example, we're using the yyyy-MM-dd format, which represents a four-digit year, two-digit month, and two-digit day separated by hyphens. You can use a different format by specifying a different pattern string. For example, to use the dd/MM/yyyy format, you can use the following code:

String s = "20/12/2022";
DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
try {
    Date date = df.parse(s);
} catch (ParseException e) {
    e.printStackTrace();
}

Note that the parse method can throw a ParseException if the input string is not in the expected format. It's a good idea to handle this exception in a try-catch block, as shown in the examples above.

You can find more information about the SimpleDateFormat class and examples of how to use it in the Java documentation.