Explore topic-wise MCQs in Java Programming.

This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Java Programming knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the difference between servlets and applets?
i.Servlets execute on Server; Applets execute on browser
ii.Servlets have no GUI; Applet has GUI
iii.Servlets creates static web pages; Applets creates dynamic web pages
iv.Servlets can handle only a single request; Applet can handle multiple requests

A. i,ii are correct
B. i,iii are correct
C. i,ii,iii are correct
D. i,ii,iii,iv are correct
E. None of these
Answer» B. i,iii are correct
Discussion
2.

Which are the session tracking techniques?
i. URL rewriting
ii. Using session object
iii.Using response object
iv. Using hidden fields
v. Using cookies
vi. Using servlet object

A. i, ii, iv, v
B. i, ii, iii, vi
C. i, ii, iii, v
D. i, vi, iii, v
E. None of these
Answer» B. i, ii, iii, vi
Discussion
3.

Which of the following is good coding practice to determine oddity?
i)
public boolean Calc(int n)
{
	return (n & 1)!= 0;
 }

ii)
public boolen Calc(int n)
{
	return n % 2 == 1;
}
A. i
B. ii
C. option (i) causes compilation error
D. option (ii) causes compilation error
E. None of these
Answer» B. ii
Discussion
4.

What is the lastest version of Java?

A. 7
B. 6
C. 9
D. 8
Answer» D. 8
Discussion
5.

JVM stands for ____

A. Java vacuum machine
B. Java void machine
C. Java Virtual machine
D. Java Virtual model
Answer» D. Java Virtual model
Discussion
6.

Which are the session tracking techniques?

A. i, ii, iv, v
B. i, ii, iii, vi
C. i, ii, iii, v
D. i, vi, iii, v
E. None of these
Answer» B. i, ii, iii, vi
Discussion
7.

What is the difference between servlets and applets?

A. i,ii are correct
B. i,iii are correct
C. i,ii,iii are correct
D. i,ii,iii,iv are correct
E. None of these
Answer» B. i,iii are correct
Discussion
8.

request is instance of which one of the following classes?

A. ServletRequest
B. Request
C. HttpRequest
D. HttpServletRequest
E. None of these
Answer» E. None of these
Discussion
9.

What does foo.getClass().getMethod( doSomething , null) return?

A. Exception is thrown
B. Class object
C. Method is returned and we can call the method as method.invoke(foo,null);
D. doSomething method instance
E. None of these
Answer» D. doSomething method instance
Discussion
10.

jspService() method of HttpJspPage class should not be overridden.

A. False
B. True
C. NA
D. NA
E. NA
Answer» B. True
Discussion
11.

What does Class.forName( myreflection.Foo ).getInstance() return?

A. Foo object
B. Calls the getInstance() method of Foo class
C. class object of Foo
D. An array of Foo objects
E. None of these
Answer» B. Calls the getInstance() method of Foo class
Discussion
12.

Can and be used alternatively in JSP?

A. False
B. True
C. NA
D. NA
E. NA
Answer» B. True
Discussion
13.

out is implicit object of which class?

A. javax.servlet.jsp.JspWriter
B. javax.servlet.jsp.SessionPrinter
C. javax.servlet.jsp.SessionWriter
D. javax.servlet.jsp.PrintWriter
E. None of these
Answer» B. javax.servlet.jsp.SessionPrinter
Discussion
14.

Which method is used to get three-letter abbreviation for locale s country in servlets?

A. Local.retrieveISO3Country()
B. Response.getISO3Country()
C. Request.getISO3Country()
D. Locale.getISO3Country()
E. None of these
Answer» D. Locale.getISO3Country()
Discussion
15.

What does MIME stand for?

A. Multipurpose Internet Mail Extension
B. Multipurpose Internet Mass Extension
C. Multipurpose Internet Messaging Extension
D. Multipurpose Internet Media Extension
E. None of these
Answer» B. Multipurpose Internet Mass Extension
Discussion
16.

What does System.getProperty( variable ) return?

A. Null
B. Runtime error
C. Value stored in variable
D. Compilation error
E. None of these
Answer» B. Runtime error
Discussion
17.

Which of these events will be generated if we close an applet s window?

A. AdjustmentEvent
B. ActionEvent
C. WindowEvent
D. ComponentEvent
E. None of these
Answer» E. None of these
Discussion