GSSP-JAVA Online Practice Questions and Answers
Which of the following elements are the subelements of the mime-mapping element in a deployment
descriptor file?
Each correct answer represents a complete solution. Choose all that apply.
A. exception-type
B. error-code
C. extension
D. mime-type
E. servlet-class
Which of the following methods of the HttpServletResponse interface is used for URL rewriting? Each correct answer represents a complete solution. Choose all that apply.
A. encodeURL
B. encodeRedirectURL
C. sendRedirect
D. getRequestURL()
Which of the following methods is used to encrypt or decrypt data in a single step?
A. wrap()
B. update()
C. digest()
D. doFinal()
Mark works as a Programmer for InfoTech Inc. He creates a program that uses the following code.
1.
class Book
2.
{
3.
Short f1= 15;
4.
Book GetDetails(Book b1)
5.
{
6.
b1=null;
7.
return b1;
8.
}
9.
public static void main(String args[])
10.
{
11.
Book b1 = new Book();
12.
Book b2 = new Book();
13.
Book b3 = b1.GetDetails(b2);
14.
b1=null;
15.
//code
16.
}
17.
}
How many objects will be eligible for garbage collection when line 15 is reached?
A. It cannot be determined.
B. 1
C. 2
D. 0
What will be the output of the following code snippet?
class test22 { public static void main(String args[]) { String str= new String("Hello"); str.insert(3,"bye"); System.out.println(str); } }
A. It will display Hello.
B. It will display Helbyelo.
C. It will throw NFE.
D. It will generate a compile-time error.
Mark works as a Programmer for InfoTech Inc. He develops the following program.
class iftest2
{public static void main(String args[])
{int x=0, y=1;if //code//{System.out.println("true");}}} Which of the following if statements are illegal if they
are placed at //code//?
A. (y == true)
B. (1)
C. (x == false)
D. (x == 1)
E. (x)
F. (x != y)
Which of the following methods of the HttpSession interface can be called upon an invalidated session without throwing the IllegalStateException?
A. getAttribute()
B. getServletContext()
C. getAttributesNames()
D. invalidate()
E. getLastAccessedTime()
Wilbert works as a Software Developer for Wintos Inc. He writes the following code.
1.
public class tcf
2.
{
3.
public static void main(String[] args)
4.
{
5.
try
6.
{
7.
int x = 5 / 0;
8.
System.exit(0);
9.
}
10.
catch(ArithmeticException e)
11.
{
12.
System.out.println("Within catch");
13.
}
14.
finally
15.
{
16.
System.out.println("Within finally");
17.
}
18.
}
19.
}
What will happen when he tries to compile and execute the code?
A. It will compile and print Within catch as the output.
B. It will compile and execute successfully but will not print anything.
C. It will compile and print Within catch and Within finally as the output.
D. It will compile and print Within finally as the output.
Which of the following statements about the isUserInRole() method are true? Each correct answer represents a complete solution. Choose all that apply.
A. It accepts a boolean argument.
B. It is mapped in the deployment descriptor using the
C. It belongs to the HttpServletResponse interface.
D. The
Which of the following is a valid constructor for the DataInputStream class?
A. DataInputStream(File file)
B. DataInputStream(FileInputStream fin)
C. DataInputStream(String str)
D. DataInputStream(FileInputStream fin, int size)