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Mastering the intricacies of date and time manipulation is an essential skill for any Java programmer. From building project management tools that track deadlines and resource allocation to crafting e-commerce applications that ensure timely deliveries, a firm grasp of Java’s Date and Time API is an invaluable asset. This API offers a robust suite of classes and methods specifically designed to handle dates, times, and timezones effectively.
This interactive quiz delves into the core concepts of Java’s Date and Time API, providing an engaging platform to test your knowledge. By tackling these questions, you’ll gain valuable insights into your understanding of creating and manipulating dates and times, formatting them for human readability, and performing calculations involving durations and time differences.
Whether you’re a seasoned Java developer or just beginning your programming journey, this quiz serves as a springboard to solidify your foundational skills in date and time handling within Java.
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Question 1 of 15
1. Question
Which method in Java is used to return the Hashcode of the invoked object ?
CorrectIncorrect -
Question 2 of 15
2. Question
class Time {
public static void main ( String args [ ] )
{
Time object = new Time.now();
System.out.println(object);
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 3 of 15
3. Question
class Formatter {
public static void main ( String args [ ] )
{
Date date = new Date();
simpleDateFormat form = new simpleDateFormat(“dd:ss;yyyy”);
System.out.println(form.format(date));
}
}
Date = 25th august 2021
What will be the output of the program ?
CorrectIncorrect -
Question 4 of 15
4. Question
Which of the following classes is used to format the Date and time in Java ?
CorrectIncorrect -
Question 5 of 15
5. Question
class Yesterday {
public static void main ( String args [ ] )
{
Date date = new Date.now();
Date yesterday = date.minus(1);
System.out.println(yesterday);
}
}
Date = 25/08/2021
What will be the output of the program ?
CorrectIncorrect -
Question 6 of 15
6. Question
class LeapYear {
public static void main ( String args [ ] )
{
Date date = new Date(“20:08.2020”);
System.out.println(date.isLeapYear());
}
}
What is the output of the program ?
What is the output of the program ?
CorrectIncorrect -
Question 7 of 15
7. Question
Which of the following is not a package for Date and Time ?
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Question 8 of 15
8. Question
Class Testing {
public static void main ( String args [ ] )
{
Date date = new Date(“25/08/2021”);
boolean value = date.isLeapyear();
if(value==true)
{
System.out.println(“The given date is a leap year”);
}
else {
System.out.println(“The given date is not a leap year”);
}
}
}
What is the output of the program ?
CorrectIncorrect -
Question 9 of 15
9. Question
class Timing {
public static void main ( String args [ ] )
{
Time time = new Time.of(21,54,50);
System.out.println(time);
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 10 of 15
10. Question
What is the function of the String toString() method in Java ?
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Question 11 of 15
11. Question
class Date {
public static void main ( String args [ ] )
{
LocalDate date = new Date.now();
LocalDate date2 = date.plusDays(2);
System.out.println(date2);
}
}
What is the output of the program ?
CorrectIncorrect -
Question 12 of 15
12. Question
class DateFormatter {
public static void main ( String args [ ] )
{
Date date = new Date.now();
SimpleDateFormat syntax = new SimpleDateFormat(“yyyy.MM.dd”);
System.out.println(“syntax.format(date));
}
}
If today is 25th august of 2021 how will the date be printed ?
CorrectIncorrect -
Question 13 of 15
13. Question
Which of the following is the parameter to be passed for a String format() method ?
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Question 14 of 15
14. Question
class Demo {
public static void main ( String args [ ] )
{
System.out.println(Date);
}
}
What is the error in the program ?
CorrectIncorrect -
Question 15 of 15
15. Question
Class Date {
public static void main ( String args [ ] )
{
Date dateobj = new Date();
System.out.println(dateobj.toString());
}
}
What will be the output of the program ?
CorrectIncorrect
Summary:
So you’ve taken the Java Date and Time Quiz and put your knowledge to the test! This quiz covered essential topics like creating Date objects, formatting dates and times, and manipulating date and time values. By reviewing both your correct and incorrect answers, you can gain valuable insights into your strengths and weaknesses in this critical domain.
Remember, effective learning is an ongoing process. Explore additional resources beyond the quiz to deepen your understanding. Consider online courses, tutorials, and practice problems to further solidify your grasp of Java date and time functionalities.