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How to Convert String to Date in Java

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by vigneshchennai74 dot icon Updated: Jan 24, 2023

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Converting the string to a Date object allows you to validate that the date is in the correct format and valid. We can achieve this by following a simple algorithm. 


  • Firstly, we need to get the required string to be converted to a date. 
  • Next, we need to create an instant Timestamp object which should be empty. 
  • Timestamp: A timestamp denotes the number of seconds and nanoseconds. We can use the "Date" class of java. util package to get the current timestamp. 
  • Date: This java class includes some specific time with millisecond precision. 
  • Then, our string can be converted to date by using Instant.parse() method. 
  • Instant.parse(): This method converts the string into a date. The string is processed using DateTimeFormatter and must reflect a legitimate moment in UTC. 
  • DateTimeFormatter: This class is used to parse dates in various formats. 
  • If the string is converted to date successfully, print the date;, otherwise, throw DateTimeParseException. 
  • DateTimeParseException: This is an exception when an error occurs while parsing the string. It includes the string that is being parsed and the error. 


Here is an example on how to convert string to date in Java;

Preview of the output that you will get on running this code from your IDE

Code

In this function we have used Java.util library.

How to convert String to Date with a specific format in java

JavadotLines of Code : 45dotLicense : Strong Copyleft (CC BY-SA 4.0)

Dependent Libraries : 
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ParsingDate {

    public static void main(String[] args) {  
            DateFormat fmt = new SimpleDateFormat("dd-MM-yyyy");
            Date d;
            try {
                d = fmt.parse("04-12-2019");
                System.out.println(d);  // Wed Dec 04 00:00:00 CET 2019
            } catch (ParseException e) {
                e.printStackTrace();
            }  
        }
}

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ParsingDate {

    public static void main(String[] args) {
        DateFormat fmt = new SimpleDateFormat("dd-MM-yyyy");
        Date d = new Date();
        System.out.println(d);  // Wed Dec 04 11:24:35 CET 2019
        System.out.println(fmt.format(d)); // 04-12-2019
    }
}

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class ParsingLocalDate {

    public static void main(String[] args) {
        DateTimeFormatter fmt = DateTimeFormatter.ofPattern("dd-MM-yyyy");
        LocalDate d = LocalDate.parse("04-12-2019", fmt);
        System.out.println(d);  // 2019-12-04
    }
}
  1. Copy this code using "Copy " button above and paste it in your java IDE.
  2. Use "Java.util" package to run the Code.
  3. Run the Program to get a Date.


I hope you found this useful i have added the dependent Libraries and versions information in the following sections


i found this code snippet by searching for "Convert String to Date using java "in kandi. You can try any such use case!

Dependent Library

java-utilby jdereg

Java doticonstar image 347 doticonVersion:Currentdoticon
License: Permissive (Apache-2.0)

Rarely available and hard-to-write Java utilities, written correctly, and thoroughly tested

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            java-utilby jdereg

            Java doticon star image 347 doticonVersion:Currentdoticon License: Permissive (Apache-2.0)

            Rarely available and hard-to-write Java utilities, written correctly, and thoroughly tested
            Support
              Quality
                Security
                  License
                    Reuse

                      If you do not have Java.util that is required to run this code, you can install it by clicking on the above link and copying the pip Install command from the Java.Util page in kandi. You can search for any dependent library on kandi like Java.util

                      Environment Test

                      I tested this solution in the following versions. Be mindful of changes when working with other versions


                      1. The solution is created and executed in java version "1.8.0_251"
                      2. This solution is tested on Java.util version "1.9.2"


                      Using this solution, we are able to convert a string into Date using the Java.util Library in java with simple steps. This process also facilities an easy to use, hassle free method to create a hands-on working version of code which would help us Conversion of String to Date.

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