Description : The class string belongs to ................... package. A) java.awt B) java.lang C) java.applet D) java.string
Last Answer : B) java.lang
Description : ............... package is used by compiler itself. So it does not need to be imported for use. A) java.math B) java.awt C) java.applet D) java.lang
Last Answer : D) java.lang
Description : Why did you write java.util package? (only if you use classes like Scanner or StringTokenizer)
Last Answer : A: To include the functions of the Scanner or StringTokenizer class from the java.util package.
Description : Which is the root class of all AWT events A) java.awt.ActionEvent B) java.awt.AWTEvent C) java.awt.event.AWTEvent D) java.awt.event.Event
Last Answer : B) java.awt.AWTEvent
Description : State true or false. i) Jpanel is a class included in awt package. ii) Anonymous classes are mostly used for event handling. iii) Names of anonymous classes must be unique iv) JOptionPane is an inner class A) i-false ... ) i-false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true
Last Answer : C) i-false, ii-true, iii-false, iv-false
Description : State true of false. i) AWT is an extended version of swing ii) Paint( ) of Applet class cannot be overridden A) i-false, ii-false B) i-false,ii-true C) i-true, ii-false D) i-true, ii-true
Last Answer : A) i-false, ii-false
Description : The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C
Last Answer : D) both B and C
Description : Which of the following statement(s) with regard to an abstract class in JAVA is/are TRUE? I. An abstract class is one that is not used to create objects. II. An abstract class is designed only to act as a base class ... by other classes. (1) Only l (2) Only II (3) Neither I nor II (4) Both l and II
Last Answer : Both l and II
Description : …………. Is the process of creating new classes, called derived classes from existing classes called base class. A) Inheritance B) Encapsulation C) Polymorphism D) Overloading
Last Answer : A) Inheritance
Description : java.util.MissingResourceException: Can't find bundle for base name -Web-Development
Last Answer : answer:
Description : Which interface does java.util.Hashtable implement?
Last Answer : Ans. Java.util.Map
Description : Which of the following does not have a super class: a) System b) Lang c) Exception d) Object e) None of The Above
Last Answer : d) Object
Description : What is meaning of java.lang.IllegalArgumentException There is no GcmTaskService component registered within this package. Have you extended GcmTaskService correctly at com.Google.android.gms.common.i?
Last Answer : You have a Java error in one of your Java subroutine calls. It looks as though an external library has not been specified.
Description : A ………………. Is a class whose instances themselves are classes. A) Subclass B) Abstract Class C) Meta Class D) Object Class
Last Answer : C) Meta Class
Description : ______provides a powerful and natural mechanism for organizing and structuring your software. It also explains how classes inherit state and behavior from their super classes and explains how to derive one class ... the java programming language: a) Object b) Inheritance c) Class d) None of These
Last Answer : b) Inheritance
Description : 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 iv) final does not prevent inheritance A) i-true, ii- ... C) i-true, ii-true, iii-true, iv-true D) i-true, ii-false, iii-false, iv-false
Last Answer : B) i-false, ii-false, iii-false, iv-false
Description : In JDBC ........................ imports all Java classes concerned with database connectivity. A) javax.sql.* B) java.mysql.* C) java.sql.* D) com.*
Last Answer : C) java.sql.*
Description : Equivalence partitioning is a .................. method that divides the input domain of a program into classes of data from which test cases can be derived. (A) White-box testing (B) Black-box testing (C) Orthogonal array testing (D) Stress testing
Last Answer : (B) Black-box testing
Description : .................. allows to create classes which are derived from other classes, so that they automatically include some of its "parent's" members, plus its own members. (A) Overloading (B) Inheritance (C) Polymorphism (D) Encapsulation
Last Answer : (B) Inheritance
Description : Which of the following statement(s) is/are TRUE with regard to software testing? I. Regression testing technique ensures that the software product runs correctly after the changes during maintenance. II. Equivalence partitioning is a ... (1) only I (2) only II (3) both I and II (4) neither I nor II
Last Answer : (1) only I
Description : Is Java an Object Oriented language?
Last Answer : A: Yes.
Description : Which one of the following is true for Java? A) Java is object oriented and interpreted B) Java is efficient and faster than C C) Java is the choice of everyone. D) Java is not robust.
Last Answer : A) Java is object oriented and interpreted
Description : The pure object oriented programming language with extensive metadata available and modifiable at run time is (A) Small talk (B) C++ (C) Java (D) Eiffel
Last Answer : (A) Small talk
Description : Each method in a java class must have a unique name . A) Not necessary B) True C) False D) None of the above
Last Answer : A) Not necessary
Description : 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.
Last Answer : D) an interface that defines methods to read primitive data types.
Description : State true or false for Java Program. i) Data members of an interface are by default final ii) An abstract class has implementations of all methods defined inside it. A) i-false, ii-false B) i-false, ii-true C) i-true, ii-false D) i-true, ii-true
Last Answer : C) i-true, ii-false
Description : 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
Last Answer : B) i-false, ii-true
Description : Native – protocol pure Java converts ……….. into the ………… used by DBMSs directly. A) JDBC calls, network protocol B) ODBC class, network protocol C) ODBC class, user call D) JDBC calls, user call
Last Answer : A) JDBC calls, network protocol
Description : Consider the following JAVA program: public class First { public static int CBSE (int x) { if (x < 100) x = CBSE (x +10); return (x - 1); } public static void main (String[] args){ System.out.print(First.CBSE(60)); } } What does this program print? (1) 59 (2) 95 (3) 69 (4) 99
Last Answer : (2) 95
Description : Which of the following differentiates between overloaded functions and overridden functions ? (A) Overloading is a dynamic or runtime binding and overridden is a static or compile time binding. ... function overloading, while redefining a function in a friend class is called function overriding.
Last Answer : (B) Overloading is a static or compile time binding and overriding is dynamic or runtime binding.
Description : When the inheritance is private, the private methods in base class are.................. in the derived class (in C++). (A) inaccessible (B) accessible (C) protected (D) public
Last Answer : (A) inaccessible
Description : Which of the following, in C++, is inherited in a derived class from base class ? (A) constructor (B) destructor (C) data members (D) virtual methods
Last Answer : (C) data members
Description : Consider the following two statements: (a) A publicly derived class is a subtype of its base class. (b) Inheritance provides for code reuse. Which of the following statements is correct? (A) Both the statements ( ... ) is correct and (b) is incorrect (D) Statement (a) is incorrect and (b) is correct
Last Answer : Answer: A
Description : A ____ is a namespace for organizing classes and interfaces in a logical manner. Placing your code into ______makes large software projects easier to manage. This section explains why this is useful and ... provided by the Java Platform: a) Inheritance b) Object c) Package d) None of These
Last Answer : c) Package
Description : Consider the two class classification task that consists of the following points: Class C1: [1 1.5] [1 -1.5] Class C2: [-2 2.5] [-2 -2.5] The decision boundary between the two classes using single perceptron is given by: (A) x1+x2+1.5=0 (B) x1+x2-1.5=0 (C) x1+1.5=0 (D) x1-1.5=0
Last Answer : (C) x1+1.5=0
Description : It is possible to define a class within a class termed as nested class. There are ............ types of nested classes. (A) 2 (B) 3 (C) 4 (D) 5
Last Answer : Answer: A, C
Description : ...................... of a remotely accessible object must implement ................ A) all methods, RemoteException B) class, RemoteException C) class, RemoteInterface D) all methods, RemoteInterface
Last Answer : C) class, RemoteInterface
Description : The out object is an object encapsulated inside the ................. class, and represents the standard output device. A) standard B) local C) globlal D) system
Last Answer : D) system
Description : A ……………. takes a reference to an object of the same class as itself as an argument. A) Reference constructor B) Copy Constructor C) Self Constructor
Last Answer : B) Copy Constructor
Description : Which of the following is/ are the characteristics of friend function. A) It is not in the scope of the class to which it has been declared as friend. B) It can invoke like a normal function without the help of any object. C) Usually, it has the objects as arguments. D) All of the above.
Last Answer : D) All of the above.
Description : Which of the following is true about the static member variable in C++. i) It is initialized to zero when the first object of its class is created. Other initialization is also permitted. ii) It is visible only within ... , ii-True B) ii-False, ii-True C) i-True, ii-False D) i-False, iii-False
Last Answer : B) ii-False, ii-True
Description : Describe with examples, passing parameters to base class constructor and derived class constructor by creating object of derived class.
Last Answer : When a class is declared, a constructor can be declared inside the class to initialize data members. When a base class contains a constructor with one or more arguments then it is mandatory for the derived class to have a ... #include class base { int x; public: base(int a) { x=a; cout
Description : What is the default java package?
Last Answer : A: java.lang
Description : Name the primitive data-types in java.
Last Answer : A: byte, short, int, long, float, double, char and boolean
Description : Mention other ways in which java handles exceptions.
Last Answer : A: Java can handle exception using the try-catch block, throws keyword and throw keyword.
Description : What is significance of import java.io.* in your program?
Last Answer : A: The line imports all the classes of the java.io package into the current program.
Description : What is Inheritance? How is it implemented in Java?
Last Answer : A: The ability of a class to adopt/share the properties (data and functions) completely or partially from another class is called Inheritance. In Java, it is implemented by the use of the keyword, extends.
Description : What is Polymorphism? How is it implemented in Java?
Last Answer : A: It literally means the ability to take ‘more than one forms’. The ability of a method to behave in more than one form is called polymorphism. In Java, it is implemented by method (function) overloading (compile time polymorphism) and method overriding (runtime polymorphism).