Connection, Statement are interfaces and ResultSet is a class.
True.
False.
Correct Answer :
B. False.
Related Questions
Every method of a final in class is implicitly final.
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 constructor must always invoke its supper class constructor in its first statement.
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
In RMI we invoke client method from remote server
True
False
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
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>
Any method in a supper class can be over ridden in its subclass.
True
False
Which exception is thrown by the read() method of InputStream class?
IOException
FileNotFoundException
ReadException
None of the above
In RMI before running the client program we must start RMI Registry.
True.
False.
Servlet can have ___________
get method and post method
get method or post method
Either of the above
Which of the following command lines options generates documentation for all classes and methods?
-protected
-public
-private
-encoding
Members of a class specified as private are accessible only to the methods of the class.
True
False
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
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.
All methods in an abstract class must be declared abstract.
True
False
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
A class may be both abstract and final.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
A string object can not be modified after it is created.
True
False
A catch can have comma-separated multiple arguments.
True
False
Which of the following are the wrapper classes?
Random
Vector
Byte
all of the above
Any class may be inherited by another class in the same package.
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
The concept of multiple inheritance is implemented in Java by
extending two or more classes
extending one class and implementing one or more interfaces
all the above
In the code below, what data types the variable x can have?
byte b1 = 5;
byte b2 = 10;
x = b1 * b2;
int short
The modulus operator (%) can be used only with Integer operands.
True
False
A Java monitor must either extend thread class or implement Runnable interface.
True
False
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
It is perfectly legal to refer to any instance variable inside of a static method.
True
False