MCQ 1 Multidimensional arrays are actually ______________.

(A) Arrays of element (B) Arrays of variable (C) Arrays of arrays (D) Arrays of variable

MCQ 2 A java program is first _________________and ______________.

(A) executed, run (B) compiled, run (C) run, interpreted (D) interpreted, compiled

MCQ 3 What is the priority of the Garbage collector thread of jdk?

(A) Low Priority (B) Highest Priority (C) Medium Priority (D) Decided at run time

MCQ 4 Keyword ___________ is always a reference to the object.

(A) new (B) this (C) invoke (D) class

MCQ 5 Which is used to call the stored procedures and functions?

(A) CallableStatement Interface (B) PreparedStatement Interface (C) Both (a) and (b) (D) None of the above

MCQ 6 Which of the following statement is false?

(A) The sleep() method should be enclosed in try __ catch block (B) A suspended thread using suspend() method can be revived using the resume() method. (C) A thread can be temporarily suspended from running by using the wait() method. (D) The yield() method should be enclosed in try __ catch block.

MCQ 7 What is the correct annotation to use to export a method as a web services operating using JAVA API for a XML based webservices (JAS-Ws), version 2.0?

(A) @WebService (B) @WebMethod (C) @WSMethod (D) @WSMethod

MCQ 8 A package is a collection of

(A) Interfaces (B) Classes (C) Both A and B (D) None of these

MCQ 9 ____________ operators are overloaded for string objects?

(A) -, + (B) +, = (C) <<, >> (D) ++, –

MCQ 10 Which constructor creates an empty string buffer with the specified capacity as length.

(A) StringBuffer() (B) StringBuffer(String str) (C) StringBuffer(int capacity) (D) None of the above

MCQ 11 _____________ statement is valid for array declaration.

(A) int number( ); (B) float number( ); (C) float number[ ]; (D) count int[ ];

MCQ 12 What is the default return type of main()

(A) void (B) double (C) float (D) int

MCQ 13 State true or false.

• i) init() is called after start() in applet
• ii) applets are used for networking
• iii) inheritance is a part of Java Foundation Classes
• v) final does not prevent inheritance
<

(A) i-true, ii-false, iii-false, iv-false (B) i-true, ii-true, iii-true, iv-true (C) i-true, ii-true, iii-false, iv-true (D) i-false, ii-false, iii-false, iv-false

Correct Answer Choice D i-false, ii-false, iii-false, iv-false
See Answer

MCQ 14 What is NullPointerException?

(A) A NullPointerException is thrown when calling the instance method of a null object or modifying/accessing field of a null object. (B) A NullPointerException is thrown when object property is set as null. (C) A NullPointerException is thrown when object is set as null. (D) None of the above

MCQ 15 Prepared Statement object in JDBC used to execute ______________ queries.

(A) Executable (B) Simple (C) High level (D) Parameterized

MCQ 16 Which of the following is not mandatory in variable declaration?

(A) a semicolon (B) an identifier (C) an assignment (D) a data type

MCQ 17 Which of the following is true about Java.

(A) Java does not support overloading. (B) Java has replaced the destructor function of C++ (C) There are no header files in Java. (D) All of the above

MCQ 18 In JDBC _____________ imports all Java classes concerned with database connectivity.

(A) javax.sql.* (B) java.mysql.* (C) java.sql.* (D) com.*

MCQ 19 It is 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 20 __________________ is the key to _________________.

(A) Serialization, persistence (B) Persistence, inheritance (C) Inheritance, object (D) Persistence, serialization

MCQ 21 In Java variables, if first increment of the variable takes place and then the assignment occurs. This operation is also called ___________________.

(A) pre increment (B) post increment (C) incrementation (D) pre incrementation

MCQ 22 When the operators are having the same priority, they are evaluated from ________________ in the order they appear in the expression.

(A) right to left (B) left to right (C) any of the order (D) depends on compiler

MCQ 24 ______________ is a feature that allows one interface to be used for a general class of actions.

(A) Class (B) Inheritance (C) Polymorphism (D) Interface

MCQ 24 Java support RMI. What does this RMI stands for?

(A) Random Memory Interface (B) Remote Method Invocation (C) Random Method Invocation (D) Remote Memory Interface

MCQ 25 Java was developed by the company

(A) Sun Micro systems (B) Microsoft (C) Micro tech (D) IBM

MCQ 26 _____________ keyword is used to invoke the current object.

(A) New (B) That (C) This (D) Me