Chapter -17 What is Time And Date in Java

Time And Date in Java

Introduction : 

Time and Date function in java provides a lot of feature that are used to manipulate now current date, time time and time with one time in program methods used and import same package in java . By using java.time package we can get current date and time in very simple way. Let's use some important methods of java.time package. 

Note : If you don't known what is package please watch a tutorial on YOUTUBE for better understand so lets go for understand some program in java.

Example 1: Print Current Date 

Note : LocalDate package represent a date(YEAR-MONTH-DAY) 

           For example: 2022-07-06

import java.time.LocalDate;   // import package/ class

class Date{

  public static void main(String args[]){

    LocalDate date = LocalDate.now();   // Create a object name of date

    System.out.println("Current Date is :"+date);     // display current date line.

  }

}

----OUTPUT----

Current Date : 2022-07-06

Example 2:  Print Current Time

Note : LocalTime package represent a Time(hour, minute, second and nanoseconds (HH-mm-ss-ns))) 

           For example: 17:39:32.442501900

import java.time.LocalTime;   // import package/ class

class Time{

  public static void main(String args[]){

    LocalTime time = LocalTime.now();   // Create a object name of date

    System.out.println("Current Time is :"+time);     // display current date line.

  }

 

}

---OUTPUT---

Current Time is :17:39:32.442501900

Example 3:  Print Current Date and Time 

Note : import LocalDateTime package represent both a date and a time (yyyy-MM-dd-HH-mm-ss-ns)

           For example: 2022-07-06T17:53:45.883243900

import java.time.LocalTime;   // import package/ class

class Time{

  public static void main(String args[]){

    LocalTime time = LocalTime.now();   // Create a object name of date

    System.out.println("Current Time is :"+time);     // display current date line.

  }

 

}

---OUTPUT---

Current DateTime:2022-07-06T17:53:45.883243900

Example 3:  Print Current Date Month and Year using Calendar. 

Note : import util calendar package represent both a date and a time (yyyy-MM-dd-HH-mm-ss-ns).

import java.util.Calendar; // import package

class Calen{

  public static void main(String args[]){

   

    Calendar cal=Calendar.getInstance();  // create object cal

     System.out.println("Current Date:"+cal.get(Calendar.DATE));    // print date

     System.out.println("Current Month:"+(cal.get(Calendar.MONTH)+1));  // print month

     System.out.println("Current Year:"+cal.get(Calendar.YEAR));  // print year

  }

}

---OUTPUT---

Current Date:6

Current Month:7 Current Year:2022