In a single Servlet class we can use____________
doGet(...) method only
doPost(...) method only
doGet(...) method and doPost(...) method both at a time.
Either 'a' or 'b'
Correct Answer :
C. doGet(...) method and doPost(...) method both at a time.
Related Questions
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
If m and n are int type variables, what will be the result of the expression
'm % n' when m = -14 and n = -3?
4
2
-2
-4
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
Objects are passed to a method by use of call-by-reference.
True
False
A class may be both abstract and final.
True
False
The use of protected keyword to a member in a class will restrict its visibility as follows:
Visibility only in the class and its subclasses in the same package.
Visibility only inside the same package.
Visibility in all classes in the same package and subclasses in other packages.
Visibility only in the class where it is declared.
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.
Submit button always fires doPost(...)
True
False
A string object can not be modified after it is created.
True
False
A JSP file can be stored_________________
With the extension .jsp in servlets folder of the jws
With the extension .html in public_html folder of the jws
With the extension .jsp in public_html folder of the jws
None of the above.
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
What is error in the following class definitions?
abstract class xy {
abstract sum(int x, int y) {
}
}
abstract sum(int x, int y) {
}
}
class header is not define properly
constructor is no defined
method is not defined properly
no error
To delete a file, we can use an instance of class file.
True
False
Consider the following class definition.
Class Student extends String
{
}
What happens when we try to compile this class?
Will not compile because class body is not defined
Will not compile because class is not declared public
Will compile successfully.
Will not compile because String is abstract
When present, package must be the first no comment statement in the file.
True
False
In a single Servlet class we can use____________
doGet(...) method only
doPost(...) method only
doGet(...) method and doPost(...) method both at a time.
Either 'a' or 'b'
Any method in a supper class can be over ridden in its subclass.
True
False
It is perfectly legal to refer to any instance variable inside of a static method.
True
False
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
Given the code
String s = new String("abc");
Which of the following calls are valid?
s.toUpperCase()
s.append("xyz")
s.setCharAt(1<'A')
all of the above
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
A package is a collection of
classes
interface
editing tools
classes and interfaces
With javadoc, which of the following denotes a javadoc comment?
//#
/*
/**
//**
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
It is an error to catch the same type of exception in two different catch blocks associated with a particular try block.
True
False
Consider the following statements:
int x = 10, y = 15;
x = ((x < y) ? (y + x) : (y - x);
What will be the value of x after executing these statements?
x = ((x < y) ? (y + x) : (y - x);
25
15
5
Error can't be executed.
Java is fully object oriented programme.
true
false
The break statement is required in the default case of a switch selection structure.
True
False