Which is the Best Java Web Framework ?

Java - Utility Classes - Interview Questions and Answers on Date

Q1.  Will this code Work ? If not , Why ?

java.util.Calendar c = new java.util.Calendar();

Ans. No. It gives the error "Cannot Instantiate the type Calendar". Calendar is an abstract class and hence Calendar object should be instantiated using Calendar.getInstance().

Q2.  Is java.util.Date an abstract Class ? Is java.util.Calendar an abstract Class ?

Ans. Date is not a abstract class whereas Calendar is.

Q3.  What will the following code print ?

java.util.Calendar c = java.util.Calendar.getInstance();
c.add(Calendar.MONTH, 5);

Ans. Date and Time after 5 months from now.

Q4.  Which of the following code is correct ?

a. DateFormat df = DateFormat.getInstance();
b. DateFormat df = DateFormat.getDateInstance();
c. DateFormat df = DateFormat.getInstance(DateFormat.FULL);
d. DateFormat df = DateFormat.getDateInstance(DateFormat.FULL);

Ans. All except c are correct.

Q5.  What is the use of parse method in DateFormat ?

Ans. It is used to parse String to get the Date Object with initialized date.

Q6.  Which of the following code is correct ?

a. Date date = DateFormat.newInstance(DateFormat.LONG, Locale.US).parse(str); 

b. Date date = DateFormat.newInstance(DateFormat.LONG, Locale.US).format(str); 

c. Date date = DateFormat.getDateInstance(DateFormat.LONG, Locale.US).parse(str);

Ans. c

Subscribe to Java News and Posts. Get latest updates and posts on Java from Buggybread.com
Enter your email address:
Delivered by FeedBurner
comments powered by Disqus


Try our new Java Interview Questions Search Tool.

There are more than 1000 questions with practice tests.

It's updated daily and It's Awesome.


Try our new Java Practice Test tool.

There are more than 200 questions and expanding quickly. It's updated daily and It's Awesome.