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What is the correct answer?

4

The default case is always required in the switch selection structure.

A. True

B. False

Correct Answer :

B. False


Related Questions

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4

Which of the following methods can be used to remove a component from the display?

A. remove()

B. desappear()

C. hide()

D. move()

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4

Which of the following string can be used as mode string for creating a RandomAccessFile object?

A. "rw"

B. "wr"

C. "0"

D. 'w''

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4

All methods in an abstract class must be declared abstract.

A. True

B. False

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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

Java is fully object oriented programme.

A. true

B. false

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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

The expression (x == y && a<b) is true If either x == y is true or a<b is true.

A. True

B. False

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4

Give file is a file object, which of the following are legal statements to create a new file.

A. file.create();

B. FileOutputStream fos=new FileOutputStream(file);

C. FileInputStream fis=new FileInputStream(file);

D. all of the above

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4

We would like to make a member of a class visible in all subclasses regardless of what package they are in. Which one of the following keywords would achieve this?

A. private

B. protected

C. public

D. private protected

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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

In the code below, what data types the variable x can have?

A. byte b1 = 5;

B. byte b2 = 10;

C. x = b1 * b2;

D. int short

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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

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

Every method of a final in class is implicitly final.

A. True

B. False

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4

We can over load methods with differences only in their return type.

A. True

B. False

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4

In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.

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

What is java -g used for?

A. Using the jdb tool

B. Executing a class with optimization turned off

C. To provided information about deprecated methods

D. Non of the above

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4

A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.

A. True

B. False

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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 string object can not be modified after it is created.

A. True

B. False

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4

The import statement is always the first no comment statement in a Java program files.

A. True

B. False

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4

In RMI before running the client program we must start RMI Registry.

A. True.

B. False.

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4

Which of the following are not keywords?

A. NULL

B. Implements

C. Protected

D. None of the above

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4

Objects are passed to a method by use of call-by-reference.

A. True

B. False

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4

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.

A. True

B. False

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4

Throwing an exception always causes program termination.

A. True

B. False

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4

Members of a class specified as private are accessible only to the methods of the class.

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

Declarations can appear anywhere in the body of a Java method.

A. True

B. False