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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

Correct Answer :

B. FileOutputStream fos=new FileOutputStream(file);


Related Questions

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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

What does the following line of code do?
TextField text=new TextField(10);

A. Creates text object that can hold 10 rows of text.

B. Creates text object that can hold 10 columns of text.

C. Creates the object text and initializes it with the value 10.

D. The code is illegal.

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4

If m and n are int type variables, what will be the result of the expression
'm % n' when m = -14 and n = -3?

A. 4

B. 2

C. -2

D. -4

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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

A string object can not be modified after it is created.

A. True

B. False

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4

One the features of is that an array can store many different types of values.

A. True

B. False

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4

Two methods cannot have the same name in Java.

A. True

B. False

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4

Session bean

A. Represents a single client inside the application server

B. Can not be shared

C. Is not persistent

D. Satisfies all of the above conditions

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4

When we implement an interface method, it should be declared as public.

A. True

B. False

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4

When we invoke repaint () for a Component, the AWT invokes the method:

A. draw()

B. update()

C. show()

D. paint()

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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

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

A. //#

B. /*

C. /**

D. //**

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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

In order to connect to a database through java program we must create _______-

A. Connection, Statement, ResultSet

B. Connection, ResultSet

C. Statement< ResultSet

D. Connection, Statement

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4

Which of the following statements are true?

A. UTF characters are all 24 bits.

B. Reader class has methods that can read integers and floats.

C. Unicode characters are all 16 bits.

D. all 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

Throwing an exception always causes program termination.

A. True

B. False

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4

The methods wait() and noify() are defined in

A. java.lang.Thread

B. java.lang.Runnable

C. java.lang.Object

D. java.lang.ThreadGroup

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4

Which exception is thrown by the read() method of InputStream class?

A. IOException

B. FileNotFoundException

C. ReadException

D. None of the above

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4

Which of the following command lines options generates documentation for all classes and methods?

A. -protected

B. -public

C. -private

D. -encoding

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4

Given the code
String s = new String("abc");
Which of the following calls are valid?

A. s.toUpperCase()

B. s.append("xyz")

C. s.setCharAt(1<'A')

D. all of the above

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4

JSP files creates ________________

A. html files

B. html files and java files

C. java files and class files

D. None of the above.

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4

It is perfectly legal to refer to any instance variable inside of a static method.

A. True

B. False

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4

The modulus operator (%) can be used only with Integer operands.

A. True

B. False

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4

Which of the following will produce a value of 10 if x = 9.7?

A. floor(x)

B. abs(x)

C. rint(x)

D. round(x)

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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 methods belong to the String class?

A. length()

B. compareTo()

C. substring()

D. all of the them

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4

Declaring a method synchronized guarantees that the deadlock cannot occur.

A. True

B. False

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4

putValue(...) method takes _____________________-

A. Two arguments of object type

B. First one is of a character type and second one is of an object type

C. First one is of an object type and second one is of a character type

D. None of the above.

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4

A final class may not have any abstract method.

A. True

B. False