Any class may be inherited by another class in the same package.
True
False
Correct Answer :
B. False
Related Questions
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
The check box group class is a subclass of the component class.
True
False
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
The default case is always required in the switch selection structure.
True
False
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
To delete a file, we can use an instance of class file.
True
False
Give file is a file object, which of the following are legal statements to create a new file.
file.create();
FileOutputStream fos=new FileOutputStream(file);
FileInputStream fis=new FileInputStream(file);
all of the above
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
Submit button always fires doPost(...)
True
False
All the bitwise operators have the same level of precedence in Java.
True
False
Which of the following methods can be used to remove a component from the display?
remove()
desappear()
hide()
move()
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
Any class may be inherited by another class in the same package.
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
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.
DataInput is
An abstract class defined is java.io.
A class we can use to read primitive data types.
An interface that defines methods to open files.
An interface that defines methods to read primitive data types.
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
A variable declared inside the for loop control can not be referenced out side the loop.
True
False
Throwing an exception always causes program termination.
True
False
Frames and applets cannot be used together in the same program.
True
False
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
An EJB is a server-side component that encapsulates the business logic of an application
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
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
Java is fully object oriented programme.
true
false