Question 1

Which is the keyword used to inherit a class to another?

Accepted Answer

A) Inherits 
B) extends 
C) implements 
D) import 
A) Inherits 
B) extends 
C) implements 
D) import B

Question 2

The method sqrt() is defined in the class

Accepted Answer

A) System 
B) Root 
C) Math 
D) Arithmetic 
A) System 
B) Root 
C) Math 
D) Arithmetic C

Question 3

Name the keyword that makes a variable belong to a class, rather than being defined for each instance of the class.

Accepted Answer

A) static 
B) final 
C) abstract 
D) public 
A) static 
B) final 
C) abstract 
D) public A

Question 4

The keyword used to refer the current object

Accepted Answer

A) class 
B) this 
C) new 
D) malloc 
A) class 
B) this 
C) new 
D) malloc

Question 5

Which of these is not a correct statement?

Accepted Answer

A) Every class containing abstract method must be declared abstract. 
B) Abstract class defines only the structure of the class not its implementation. 
C) Abstract class can be initiated by new operator. 
D) Abstract class can be inherited. 
A) Every class containing abstract method must be declared abstract. 
B) Abstract class defines only the structure of the class not its implementation. 
C) Abstract class can be initiated by new operator. 
D) Abstract class can be inherited.

Question 6

_________ is used to initialize objects.

Accepted Answer

A) Methods 
B) arguments 
C) constructors 
D) new keyword 
A) Methods 
B) arguments 
C) constructors 
D) new keyword

Question 7

Which method defined in Integer class can be used to convert a whole number in string type to primitive int type.

Accepted Answer

A) valueOf() 
B) intValue() 
C) parseInt() 
D) getInteger() 
A) valueOf() 
B) intValue() 
C) parseInt() 
D) getInteger()

Question 8

Identify the type of inheritance when two or more subclasses inherit the properties of a super class.

Accepted Answer

A) Multiple inheritance 
B) Single inheritance 
C) Multilevel inheritance 
D) Hierarchical inheritance 
A) Multiple inheritance 
B) Single inheritance 
C) Multilevel inheritance 
D) Hierarchical inheritance

Question 9

The keyword used inside a class to refer to its immediate super class is

Accepted Answer

A) super 
B) parent 
C) base 
D) none of these 
A) super 
B) parent 
C) base 
D) none of these

Question 10

If a class inheriting an abstract class does not define all of its function then it will be known as?

Accepted Answer

A) abstract 
B) A simple class 
C) Static class 
D) None of the mentioned 
A) abstract 
B) A simple class 
C) Static class 
D) None of the mentioned

Question 11

Which of these keywords are used to define an abstract class?

Accepted Answer

A) abst 
B) abstract 
C) Abstract 
D) abstract class 
A) abst 
B) abstract 
C) Abstract 
D) abstract class

Question 12

Which of the following is true in the case of abstract class

Accepted Answer

A) Abstract constructors cannot be created. 
B) Abstract classes can not be inherited. 
C) An abstract class contains only abstract methods. 
D) All of the above. 
A) Abstract constructors cannot be created. 
B) Abstract classes can not be inherited. 
C) An abstract class contains only abstract methods. 
D) All of the above.

Question 13

Which of the following is a valid declaration of an object of class Box?

Accepted Answer

A) Box obj = new Box(); 
B) Box obj = new Box; 
C) obj = new Box(); 
D) new Box obj; 
A) Box obj = new Box(); 
B) Box obj = new Box; 
C) obj = new Box(); 
D) new Box obj;

Question 14

The use of final keyword with method definition

Accepted Answer

A) Supports method overriding 
B) implements dynamic method dispatch 
C) Prevents method overriding 
D) none of these 
A) Supports method overriding 
B) implements dynamic method dispatch 
C) Prevents method overriding 
D) none of these

Question 15

Which class cannot have a subclass in java

Accepted Answer

A) abstract class 
B) parent class 
C) final class 
D) None of above 
A) abstract class 
B) parent class 
C) final class 
D) None of above

Question 16

Which of these access specifiers must be used for main() method?

Accepted Answer

A) private 
B) public 
C) protected 
D) None of the mentioned 
A) private 
B) public 
C) protected 
D) None of the mentioned

Question 17

Which of the following is a method having same name as that of its class?

Accepted Answer

A) finalize 
B) delete 
C) class 
D) constructor 
A) finalize 
B) delete 
C) class 
D) constructor

Question 18

The keyword used to create an object

Accepted Answer

A) class 
B) this 
C) new 
D) malloc 
A) class 
B) this 
C) new 
D) malloc

Question 19

Variables declared with in a class are called

Accepted Answer

A) Identifier 
B) local variable 
C) instance variable 
D) global variable 
A) Identifier 
B) local variable 
C) instance variable 
D) global variable

Question 20

Which operator is used by Java run time implementations to free the memory of an object when it is no longer needed?

Accepted Answer

A) delete 
B) free 
C) new 
D) None of the mentione 
A) delete 
B) free 
C) new 
D) None of the mentione

Which is the keyword used to inherit a class to another?

The method sqrt() is defined in the class

Name the keyword that makes a variable belong to a class, rather than being defined for each instance of the class.

The keyword used to refer the current object

Which of these is not a correct statement?

_________ is used to initialize objects.

Which method defined in Integer class can be used to convert a whole number in string type to primitive int type.

Identify the type of inheritance when two or more subclasses inherit the properties of a super class.

The keyword used inside a class to refer to its immediate super class is

If a class inheriting an abstract class does not define all of its function then it will be known as?

Which of these keywords are used to define an abstract class?

Which of the following is true in the case of abstract class

Which of the following is a valid declaration of an object of class Box?

The use of final keyword with method definition

Which class cannot have a subclass in java

Which of these access specifiers must be used for main() method?

Which of the following is a method having same name as that of its class?

The keyword used to create an object

Variables declared with in a class are called

Which operator is used by Java run time implementations to free the memory of an object when it is no longer needed?

Java Programming Language

Java Programming: Data Types, Inheritance, Interfaces, Packages, and Exception Handling

Java Exception Handling and Inputoutput Operations

Java Inputoutput and Event Handling

AWT Components and Layout Management in Java

Java Programming Concepts

Java Thread Class, Exception Handling, and Garbage Collection

Java Multithreading and Exception Handling

Java Programming Language: Inheritance, Interfaces, Packages, and Methods

Java Programming : JDBC API, Layout Managers, and Event Handling

Java RMI and Swing Framework

Java Programming: GUI, RMI, Polymorphism, and String Handling

Java Programming:methods, Data Types, Operators, and Classes

Java Programming : Event Handling, Exception Handling

Filters

Exam 2: Java Object-Oriented Programming

Which is the keyword used to inherit a class to another?

The method sqrt() is defined in the class

Name the keyword that makes a variable belong to a class, rather than being defined for each instance of the class.

The keyword used to refer the current object

Which of these is not a correct statement?

_________ is used to initialize objects.

Which method defined in Integer class can be used to convert a whole number in string type to primitive int type.

Identify the type of inheritance when two or more subclasses inherit the properties of a super class.

The keyword used inside a class to refer to its immediate super class is

If a class inheriting an abstract class does not define all of its function then it will be known as?

Which of these keywords are used to define an abstract class?

Which of the following is true in the case of abstract class

Which of the following is a valid declaration of an object of class Box?

The use of final keyword with method definition

Which class cannot have a subclass in java

Which of these access specifiers must be used for main() method?

Which of the following is a method having same name as that of its class?

The keyword used to create an object

Variables declared with in a class are called

Which operator is used by Java run time implementations to free the memory of an object when it is no longer needed?

Java Programming Language

Java Programming: Data Types, Inheritance, Interfaces, Packages, and Exception Handling

Java Exception Handling and Inputoutput Operations

Java Inputoutput and Event Handling

AWT Components and Layout Management in Java

Java Programming Concepts

Java Thread Class, Exception Handling, and Garbage Collection

Java Multithreading and Exception Handling

Java Programming Language: Inheritance, Interfaces, Packages, and Methods

Java Programming : JDBC API, Layout Managers, and Event Handling

Java RMI and Swing Framework

Java Programming: GUI, RMI, Polymorphism, and String Handling

Java Programming:methods, Data Types, Operators, and Classes

Java Programming : Event Handling, Exception Handling

Filters