How Can I Convert Strings to Dates with Different Formats in Java?

Converting Strings to Dates with Diverse Formats in Java

In the realm of software development, it's often necessary to convert String representations of dates into Date objects. However, dates can come in various formats, posing a challenge for developers.

One common scenario is the need to convert a String in "dd/MM/yyyy" format, such as "19/05/2009," into a Date object using the "yyyy-MM-dd" format. This can be achieved using the SimpleDateFormat class.

SimpleDateFormat allows developers to specify the input and output date formats. The code below demonstrates how to convert a String in the "dd/MM/yyyy" format to a Date object with the "yyyy-MM-dd" format:

SimpleDateFormat fromUser = new SimpleDateFormat("dd/MM/yyyy");
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd");

try {
    String inputString = "19/05/2009";
    String reformattedStr = myFormat.format(fromUser.parse(inputString));
} catch (ParseException e) {
    e.printStackTrace();
}

In this code, the SimpleDateFormat object named "fromUser" is initialized with the "dd/MM/yyyy" format. The "myFormat" object is initialized with the desired output format, "yyyy-MM-dd."

Using the "parse" method, the code converts the String "inputString" into a Date object based on the "fromUser" format. Subsequently, the "format" method of the "myFormat" object is used to reformat the Date object into the desired "yyyy-MM-dd" format and store it in the variable "reformattedStr."

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