Java Program to Get Year From Date

Java is the most powerful programming language, by which we can perform many tasks and Java is an industry preferable language. So it is filled with a huge amount of features. Here we are going to discuss one of the best features of Java, which is how to get a year from date using Java.

Methods:

There are many ways to get a year from date of which frequently used two methods are listed below.

1. Using get() method LocalDate class
2. Using get() method of Calendar class
3. Using split() method of String class

Let us discuss each of them in detail alongside implementing the methods 

Method 1: Using get() method of LocalDate class

The get() method of LocalDate class in Java method gets the value of the specified field from this Date as an int.

Syntax:

public int get(TemporalField field)

Parameter: This method accepts a parameter field which is the field to get and not necessarily null.

Return Value: It returns the value for the field.

Exceptions: It throws three exceptions namely as follows:

• DateTimeException: This exception is thrown if a value for the field cannot be obtained or the value is outside the range of valid values for the field.
• UnsupportedTemporalTypeException: This exception is thrown if the field is not supported or the range of values exceeds an int
• ArithmeticException: This exception is thrown if numeric overflow occurs

Example 

// Java Program to Get Year From Date
//  Using LocalDate class

// Importing Classes/Files
import java.time.LocalDate;
import java.time.Month;
import java.util.Date;

// Main class
class GFG {

    // Method 1
    // To get the year
    public static void getYear(String date)
    {
        // Getting an instance of LocalTime from date
        LocalDate currentDate = LocalDate.parse(date);

        // Getting year from date
        int year = currentDate.getYear();

        // Printing the year
        System.out.println("Year: " + year);
    }

    // Method 2
    // Main driver method
    public static void main(String args[])
    {
        // Specifying a date
        String date = "2021-05-21";

        // Function Call
        getYear(date);
    }
}

Output:

Year: 2021

Method 2: Using get() method of Calendar class

The get(int field_value) method of Calendar class is used to return the value of the given calendar field in the parameter.

Syntax:

public int get(int field)

Parameters: The method takes one parameter field_value of integer type and refers to the calendar whose value is needed to be returned.

Return Value: The method returns the value of the passed field.

Note: In above program, get() method is used to get the year from the specified date. 

Example 

// Java Program to Get Year From Date
// using Calendar class

// Importing Classes/Files
import java.util.*;

// main class
class GFG {

    // Main Driver Code
    public static void main(String args[])
    {
        // Creating a calendar object
        Calendar Cal
            = new GregorianCalendar(
                2021, 05, 21);

        // Getting the values of year from calendar
        // object
        int year = Cal.get(Calendar.YEAR);

        // Printing the year value
        System.out.println("Year: " + year);
    }
}

Output:

Year: 2021

Method 3: Using split() method of String class

This method does break a given string around matches of the given regular expression.

Parameters: It takes two parameters namely:

• Regex: A delimiting regular expression
• Limit: The resulting threshold

Return type: An array of strings computed by splitting the given string.

Exceptions: PatternSyntaxException - if the provided regular expression’s syntax is invalid.  

Here split() function of String class is used to split a specified date string according to the given pattern, and it returns an array of string.

Example 

// Java Program to Get Year From Date
// Using String.split() method

// Main class 
class GFG {

    // Method 1
    // To get year from date
    public static void findYear(String date)
    {
        // Splitting the given date by '-'
        String dateParts[] = date.split("-");

        // Getting year from date
        String year = dateParts[2];

        // Printing the year
        System.out.println("Year: " + year);
    }

    // Method 2
    // Main Driver Code
    public static void
    main(String args[])
    {
        // Given date
        String date = "21-05-2021";
   
        // Function calling
        findYear(date);
    }
}

Output:

Year: 2021