Java Month

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Introduction

Month in Java, part of the java.time package, is an enum representing the 12 months of the year. It provides various methods for manipulating and retrieving information about months.

Table of Contents

1. What is Month?
2. Using Month
3. Common Methods
4. Examples of Month
5. Conclusion

1. What is Month?

Month is an enum that represents the months of the year, from January to December. It is useful for working with dates and performing month-based calculations.

2. Using Month

You can use Month to access specific months, perform arithmetic operations, and retrieve information about them.

3. Common Methods

• Month.of(int month): Obtains an instance of Month from an integer (1-12).
• plus(long monthsToAdd): Returns the month that is a specified number of months after the current one.
• minus(long monthsToSubtract): Returns the month that is a specified number of months before the current one.
• length(boolean leapYear): Returns the length of the month in days, accounting for leap years.
• getValue(): Returns the numeric value of the month (1-12).

4. Examples of Month

Example 1: Accessing a Specific Month

This example demonstrates how to access a specific month using Month.of(int month).

import java.time.Month;

public class SpecificMonthExample {
    public static void main(String[] args) {
        Month month = Month.of(6); // June
        System.out.println("Month: " + month);
    }
}

Output:

Month: JUNE

Example 2: Adding and Subtracting Months

Here, we add and subtract months from a specific Month instance using plus(long monthsToAdd) and minus(long monthsToSubtract).

import java.time.Month;

public class AddSubtractMonthsExample {
    public static void main(String[] args) {
        Month month = Month.JUNE;
        Month nextMonth = month.plus(1);
        Month previousMonth = month.minus(1);
        System.out.println("Current Month: " + month);
        System.out.println("Next Month: " + nextMonth);
        System.out.println("Previous Month: " + previousMonth);
    }
}

Output:

Current Month: JUNE
Next Month: JULY
Previous Month: MAY

Example 3: Getting the Length of a Month

This example shows how to retrieve the length of a month in days, considering leap years.

import java.time.Month;

public class LengthOfMonthExample {
    public static void main(String[] args) {
        Month month = Month.FEBRUARY;
        int lengthInLeapYear = month.length(true);
        int lengthInNonLeapYear = month.length(false);
        System.out.println("Length in Leap Year: " + lengthInLeapYear);
        System.out.println("Length in Non-Leap Year: " + lengthInNonLeapYear);
    }
}

Output:

Length in Leap Year: 29
Length in Non-Leap Year: 28

Example 4: Getting the Numeric Value of a Month

In this example, we retrieve the numeric value of a month using getValue().

import java.time.Month;

public class MonthValueExample {
    public static void main(String[] args) {
        Month month = Month.DECEMBER;
        int value = month.getValue();
        System.out.println("Numeric Value of Month: " + value);
    }
}

Output:

Numeric Value of Month: 12

Conclusion

The Month enum in Java is used for working with months in a year. It provides methods for accessing specific months, performing arithmetic operations, and retrieving month-related information. Using Month can lead to more readable and efficient code when dealing with date and time operations involving months.

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