MCQ 1 Which of the following in NOT represent legal flow control statements?

(A) break; (B) break(); (C) continue outer; (D) return;

MCQ 2 Class is a _________________ entity.

(A) logical (B) Physical (C) up normal (D) collection of

MCQ 3 The use of protected keyword to a member in a class will restrict its visibility as follows:

(A) Visible only in the class and its subclass in the same package. (B) Visible only inside the same package. (C) Visible in all classes in the same package and subclasses in other packages (D) Visible only in the class where it is declared.

MCQ 4 What is currentThread()?

(A) It is a object's public static method used obtain a reference to the current thread. (B) It is a thread's instance method used to get thread count. (C) It is a object's instance method used to get thread count. (D) It is a Thread public static method used to obtain a reference to the current thread.

MCQ 5 How many reserved keywords are currently defined in the Java language?

(A) 48 (B) 49 (C) 50 (D) 51

MCQ 6 Variable declared as ____________ do not occupy on a per instance basis.

(A) Static (B) Final (C) Abstract (D) Code

MCQ 7 Using the keyboard interface you can fully abstract a _____________.

(A) Method (B) Keyword (C) Class (D) Variables

MCQ 8 _____________ inheritance is enable by interface in java.

(A) min level (B) multiple (C) low level (D) none

MCQ 9 Deserialization is the process of restoring state of an object from a byte stream.

(A) Serialization is the process of restoring state of an object from an object. (B) Deserialization is the process of restoring state of an object from a byte stream. (C) Both (a) and (b) (D) None of these

MCQ 10 Which of the following is a marker interface?

(A) serializable (B) comparable (C) cloneable (D) All of these

MCQ 11 _____________ operators which concatenates two strings.

(A) + (B) ++ (C) – (D) +–

MCQ 12 It is an important feature of java that it always provides a default constructor to a class

(A) Not supported (B) 0 (C) 1 (D) None of the above

MCQ 13 In java thread to thread communication is called _____________.

(A) passing (B) sending (C) messaging (D) calling

MCQ 14 One interface can inherit another by use of the keyword _____________.

(A) public (B) extends (C) method name (D) class name

MCQ 15 The new keyword will

• i) create in instance of an object
• ii) create instance of a class
• iii) assign memory to an array
• iv) call the destructor of a class
<

(A) i and iii (B) ii and iii (C) i and ii (D) ii, iii and iv

Correct Answer Choice A i and iii
See Answer

MCQ 16 Which class is used to uncompress the file in the deflate compression format, It provides facility to the other uncompression filters?

(A) DeflaterOutputStream class (B) InflaterInputStream class (C) Both A & B (D) None of the above

MCQ 17 Which one of the following web browsers uses just-in-time (JIT) complier?

(A) Netscape navigator (B) Internet Explorer (C) Hot JAVA (D) None of these

MCQ 18 The following program is an example of?

 
class Simple{ 
public static void main(String args[]){ 
String s="Sachin"
System.out.println(s.length());
}
}.


      

           (A)
             length() method 
           (B)
             intern() method 
           (C)
             trim() method 
          (D)
             charAt() method 
      
      
      
      

                  Correct Answer  Choice A 
         length() method
               
      
 See Answer

   

MCQ 19 What can be accessed or inherited without actual copy of code to each program?

(A) Browser (B) Applet (C) Package (D) None of the above

MCQ 20 Java has its origin in

(A) C programming language (B) PERRL (C) COBOL (D) Oak programming language

MCQ 21 State true or false for Java Program.

• i) All class variables are instance variables
• ii) All protected methods are friendly methods
<

(A) i − False, ii − False (B) i − False, ii − True (C) i − True, ii − False (D) i − True, ii − True

Correct Answer Choice B i − False, ii − True
See Answer

MCQ 22 Data input is

(A) an abstract class defined in java.io (B) a class we can use to read primitive data types (C) an interface that defines methods to open files. (D) an interface that defines methods to read primitive data types.

MCQ 23 Java is designed for ___________ environment of the Internet.

(A) Development (B) Deduction (C) Distributed (D) Web Design

MCQ 24 Which class provides stream to read binary data such as image etfrom the request object?

(A) ServltInputStream (B) ServletOutputStream (C) Both A & B (D) None of the above

MCQ 25 Which one of the following is access keyword?

(A) Public (B) Private (C) Protected (D) All of these