Java String Exercises: Print current date and time in the specified format

Java String: Exercise-15 with Solution

Write a java program to print current date and time in the specified format.

Pictorial Presentation:

Java String Exercises: Print current date and time in the specified format

Sample Solution:

Java Code:

import java.util.Calendar;

public class Exercise15 {
 public static void main(String[] args) { 
    Calendar c = Calendar.getInstance();
      System.out.println("Current Date and Time :"); 
      System.out.format("%tB %te, %tY%n", c, c, c);
      System.out.format("%tl:%tM %tp%n", c, c, c); 

Sample Output:

Current Date and Time :                                                                                       
June 19, 2017                                                                                                 
3:13 pm 

N.B. : The current date and time will change according to your system date and time.


Flowchart: Java String Exercises - Print current date and time in the specified format

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Java: Tips of the Day

Array vs ArrayLists:

The main difference between these two is that an Array is of fixed size so once you have created an Array you cannot change it but the ArrayList is not of fixed size. You can create instances of ArrayLists without specifying its size. So if you create such instances of an ArrayList without specifying its size Java will create an instance of an ArrayList of default size.

Once an ArrayList is full it re-sizes itself. In fact, an ArrayList is internally supported by an array. So when an ArrayList is resized it will slow down its performance a bit as the contents of the old Array must be copied to a new Array.

At the same time, it's compulsory to specify the size of an Array directly or indirectly while creating it. And also Arrays can store both primitives and objects while ArrayLists only can store objects.

Ref: https://bit.ly/3o8L2KH