Nested class is a way of logically grouping classes that are only used in one place.
A static nested class can refer directly to instance variables or methods defined in its enclosing class.
Nested classes can lead to more readable and maintainable code.
A static nested class interacts with the instance members of its outer class.

Answer

Correct Option: A,C,D

Question 5

java.lang.String class is declared as a final class.

technology programming languages

True
False

Answer

Correct Option: A

Question 6

Choose the methods that are not available in StringBuilder class.

technology programming languages

length
size
capacity
reverse

Answer

Correct Option: B

Question 7

Java packages are to be hierarchical.

technology programming languages

True
False

Answer

Correct Option: B

Question 8

Type erasure is a process where the compiler removes all information related to type parameters and type arguments within a class or method.

technology programming languages

True
False

Answer

Correct Option: A

Question 9

To declare a bounded type parameter, which keyword is used ?

technology programming languages

implements
use
extends
extend

Answer

Correct Option: C

Question 10

Choose the one which is not a branching statement in Java.

technology programming languages

return
break
goto
continue

Answer

Correct Option: C

Question 11

Which of the below statement is True?

technology programming languages

Python is faster than C
Python is faster than C++
Python is slower than C
None of the above

Answer

Correct Option: C

Question 12

What will be the answer of a,b,c,d after the following statement? a = 2 b = 3 c = 4 d = a + + b + + + c

technology programming languages

a=2, b=3, c=4, d=9
a=3, b=5,c=4, d=9
a=3, b=4,c=4, d=11
Error

Answer

Correct Option: A

Question 13

What is the value of a? b = 3 a = b == 3 print a

technology programming languages

Not assigned yet
3
1
True

Answer

Correct Option: D

Question 14

What is the value of a? b = 3 a = b == 3 print a

technology programming languages

Not assigned yet
3
1
True

Answer

Correct Option: D

Question 15

Consider the following code snippet: class A: a = 1 def foo(self): print "Hello",self.a class B(A): a = 3 def foo(self): print "Hi",self.a A = B a = A() b = B() What is the value of a.foo()

technology programming languages

Error
Hello 1
Hi 3
Hello 3

Answer

Correct Option: C

Question 16

What will be the output? class A: def foo(self): print "Test" a = A() a.foo()

technology programming languages

Test
Syntax error
Value error
Attribute error

Answer

Correct Option: D

Question 17

Which of the following directories are legal locations for the deployment descriptor file? Note that all paths are shown as from the root of the machine or drive.

technology programming languages

/WEB-INF
/appserverInstallDirectory/webapps/webappName/WEB-INF/xml
/appserverInstallDirectory/webapps/webappName/WEB-INF
/appserverInstallDirectory/webapps/webappName/WEB-INF/classes

Answer

Correct Option: A,C

Question 18

Identify which of the following are true statements about web applications

technology programming languages

The only way to access resources under the /WEB-INF directory is through appropriate servlet mapping directives in the deployment descriptor
Server-side code has access to all resources in the web application
Clients of web applications can't directly access resources in /WEB-INF/tld.
A good place to keep a .tld (tag library file) is directly in the /WEB-INF directory.

Answer

Correct Option: B,C,D

Question 19

Which of the following are true statements about the deployment descriptor for a web application?

technology programming languages

At least one element must be present.
is a child element of .
is the root element
elements must all be declared before elements.
At least one element must be present.

Answer

Correct Option: B,E

Question 20

Assume that there is a file called secure.txt, located at /WEB-INF/securefiles, whose contents are "Password=WebCert." What statements are false about the result of compiling and running the following code? 11 public class CodeTestServlet extends HttpServlet { 12 protected void doGet(HttpServletRequest request, 13 HttpServletResponse response) throws IOException { 14 ServletContext sc = getServletContext(); 15 InputStream is = sc.getResourceAsStream("/WEB-" + 16 "INF/securefiles/secure.txt"); 17 BufferedReader br = new BufferedReader(new InputStreamReader(is)); 18 System.out.println(br.readLine()); 19 } 20 }

technology programming languages

The code will not compile.
A RuntimeException will occur at lines 15/16
An IOException will occur at line 18
The string "Password=WebCert" will be returned to the requester
A, B, and C above
A, B, C, and D above.

Answer

Correct Option: F

Description: programming languages Online Quiz - 280
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

programming languages Online Quiz - 280

Find more quizzes from top tags