It is an error to have a method with the same signature in both the super class and its subclass.
True
False
Correct Answer :
B. False
Related Questions
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
Which of the following statements are true?
An abstract class may not have any final methods?
A final class may not have any abstracts methods.
Transient variables must be static.
all of the above
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 string object can not be modified after it is created.
True
False
All methods in an abstract class must be declared abstract.
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'
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
True
False
The default case is always required in the switch selection structure.
True
False
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.
It is an error to have a method with the same signature in both the super class and its subclass.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
One the features of is that an array can store many different types of values.
True
False
The break statement is required in the default case of a switch selection structure.
True
False
Every method of a final in class is implicitly final.
True
False
It is perfectly legal to refer to any instance variable inside of a static method.
True
False
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
Java is fully object oriented programme.
true
false
Any method in a supper class can be over ridden in its subclass.
True
False
A constructor must always invoke its supper class constructor in its first statement.
True
False
What does the following line of code do?
TextField text=new TextField(10);
Creates text object that can hold 10 rows of text.
Creates text object that can hold 10 columns of text.
Creates the object text and initializes it with the value 10.
The code is illegal.
A final class may not have any abstract method.
True
False
An individual array element that is passed to a method and modified in that method will contain the modified value when the called method completes execution.
True
False
Java always provides a default constructor to a class.
True
False
In RMI we invoke client method from remote server
True
False
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
Which of the following command lines options generates documentation for all classes and methods?
-protected
-public
-private
-encoding
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.
Servlet can have ___________
get method and post method
get method or post method
Either of the above
Declaring a method synchronized guarantees that the deadlock cannot occur.
True
False