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What is the correct answer?

4

Which of the following are not keywords?

A. NULL

B. Implements

C. Protected

D. None of the above

Correct Answer :

A. NULL


Related Questions

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4

It is an error to have a method with the same signature in both the super class and its subclass.

A. True

B. False

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4

The use of protected keyword to a member in a class will restrict its visibility as follows:

A. Visibility only in the class and its subclasses in the same package.

B. Visibility only inside the same package.

C. Visibility in all classes in the same package and subclasses in other packages.

D. Visibility only in the class where it is declared.

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4

What is wrong in the following class definitions? 
abstract class print { 
abstract show();
}
class Display extends print {
}

A. Nothing is wrong

B. Wrong Method show() should have a return type

C. Wrong Methods show() is not implemented in Display

D. Wrong Display does not contain any members.

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4

Submit button always fires doPost(...)

A. True

B. False

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4

Any class may be inherited by another class in the same package.

A. True

B. False

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4

A JSP file can be stored_________________

A. With the extension .jsp in servlets folder of the jws

B. With the extension .html in public_html folder of the jws

C. With the extension .jsp in public_html folder of the jws

D. None of the above.

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4

Message-Driven beans act as a listener for the Java Message Service API, processing messages synchronously

A. True

B. False

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4

To delete a file, we can use an instance of class file.

A. True

B. False

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4

A variable declared inside the for loop control can not be referenced out side the loop.

A. True

B. False

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4

executeUpdate automatically updates data because___________

A. auto commit is on, by default

B. It performs a hidden commit statement as well

C. Does not commit

D. None of the above.

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4

Frames and applets cannot be used together in the same program.

A. True

B. False

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4

A class may be both abstract and final.

A. True

B. False

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4

With javadoc, which of the following denotes a javadoc comment?

A. //#

B. /*

C. /**

D. //**

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4

forName() is a static factory method

A. True

B. False

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4

It is an error if a class with one or more abstract methods is not explicitly declared abstract.

A. True

B. False

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4

DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.

A. True.

B. False.

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4

For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.

A. True.

B. False.

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4

When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.

A. True

B. False

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4

It is an error to catch the same type of exception in two different catch blocks associated with a particular try block.

A. True

B. False

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4

The programmer must explicitly create the system .in and system .out objects.

A. True

B. False

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4

class.forName(...) creates an instance of java ODBC driver

A. True

B. False

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4

What is error in the following class definitions? 
abstract class xy { 
abstract sum(int x, int y) {
}
}

A. class header is not define properly

B. constructor is no defined

C. method is not defined properly

D. no error

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4

The check box group class is a subclass of the component class.

A. True

B. False

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4

Which are the valid ways to create DataInputStream streams?

A. new DataInputStream(new File("in.dat"));

B. new DataInputStream(new FileInputStream("in.dat"));

C. new DataInputStream("in.dat");

D. new DataInputStream("in.data","r");

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4

Java is fully object oriented programme.

A. true

B. false

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4

Consider the following code snippet:
try 
{
int x=0; int y=50/x;
System.out.println("Division by zero");
}
catch(ArithmeticException e)
{
System.out.println("catch block");
}

What will be the output?

A. Error. Won't compile

B. Division by zero

C. Catch block

D. Division by zero catch block

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4

If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.

A. True

B. False

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4

Which of the following represent legal flow control statements?

A. break();

B. continue(inner);

C. return;

D. exit();

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4

executeUpdate(------------) returns ___________

A. Nothing

B. Returns a ResultSet object

C. Returns an integer value to show the no. of updated rows

D. None of the above.

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4

EJBs can be of the following type(s)
None of the above

A. Entity Bean

B. Session Bean

C. Message-driven bean

D. All of the above