For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.
Correct Answer :
B. False.
Related Questions
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
The programmer must explicitly create the system .in and system .out objects.
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
Declaring a method synchronized guarantees that the deadlock cannot occur.
True
False
A package is a collection of
classes
interface
editing tools
classes and interfaces
Java always provides a default constructor to a class.
True
False
The expression (x == y && a<b) is true If either x == y is true or a<b is true.
True
False
forName() is a static factory method
True
False
Which are the valid ways to create DataInputStream streams?
new DataInputStream(new File("in.dat"));
new DataInputStream(new FileInputStream("in.dat"));
new DataInputStream("in.dat");
new DataInputStream("in.data","r");
Which of the following are not keywords?
NULL
Implements
Protected
None of the above
Members of a class specified as private are accessible only to the methods of the class.
True
False
Which of the following are keywords?
integer
default
Boolean
Object
putValue(...) method takes _____________________-
Two arguments of object type
First one is of a character type and second one is of an object type
First one is of an object type and second one is of a character type
None of the above.
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.
The modulus operator (%) can be used only with Integer operands.
True
False
class.forName(...) creates an instance of java ODBC driver
True
False
If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an <applet> tags?
number=getParameter(99)
<number==99>
<param = radius value ==99>
What is wrong in the following class definitions?
abstract class print {
abstract show();
}
class Display extends print {
}
abstract show();
}
class Display extends print {
}
Nothing is wrong
Wrong Method show() should have a return type
Wrong Methods show() is not implemented in Display
Wrong Display does not contain any members.
A method declared as static can not access non-static class members.
True
False
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
The name of a Java program file must match the name of the class with the extension Java.
True
False
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
What is java -g used for?
Using the jdb tool
Executing a class with optimization turned off
To provided information about deprecated methods
Non of the above
Which of the following keywords are used to control access to a class member?
default
protected
interface
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.
A string object can not be modified after it is created.
True
False
Which of the following methods can be used to remove a component from the display?
remove()
desappear()
hide()
move()
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
JSP files creates ________________
html files
html files and java files
java files and class files
None of the above.