Class 12 Computer Science Java Basics MCQ Questions with Answers

Java Basics Class 12 MCQ is one of the best strategies to prepare for the CBSE Class 12 Board exam. If you want to complete a grasp concept or work on one’s score, there is no method except constant practice. Students can improve their speed and accuracy by doing more MCQ on Java Basics class 12, which will help them all through their board test.

Java Basics Class 12 MCQ Questions with Answer

Class 12 Computer Science MCQ with answers are given here to chapter 10 Java Basics. These MCQs are based on the latest CBSE board syllabus and relate to the latest Class 12 Computer Science syllabus. By Solving these Class 12 MCQs, you will be able to analyze all of the concepts quickly in the chapter and get ready for the Class 12 Annual exam.

Learn Class 12 Java Basics MCQs with answers pdf free download according to the latest CBSE and NCERT syllabus. Students should prepare for the examination by solving CBSE Class 12 Computer Science Java Basics MCQ with answers given below.

Question 1: Java language was developed at Sun Micro systems in _____

• a) 1993
• b) 1992
• c) 1991
• d) 1990

Question 2: Java is an object-oriented programming language developed by _______.

• a) Oracle
• b) Sun Micro systems
• c) Unix
• d) Netscape

Question 3: Modeled after C++, the _____ language was designed to be small, simple and portable across platforms and operating systems both at the source and at the binary level.

• a) Java
• b) C
• c) Basic
• d) PHP

Question 4: _______ is a company best known for its high-end Unix workstations.

• a) Oracle
• b) Sun Micro systems
• c) Unix
• d) Netscape

Question 5: ______ language is considered as one of the ideal language for distributing executable programs via the World Wide Web.

• a) Java
• b) C
• c) Basic
• d) PHP

Question 6: Java is also a general-purpose programming language for developing programs that are \ easily usable and portable across different.

• a) Tables
• b) Stands
• c) Libraries
• d) Platforms

Question 7: _______ is small, fast, efficient and easily portable to a wide range of hardware devices.

• a) Java
• b) C
• c) Basic
• d) PHP

Question 8: Java includes a set of ___________that provide basic data types, system input and output capabilities and other utility functions.

• a) Class libraries
• b) Class functions
• c) Class methods
• d) All of these

Question 9: These basic classes are part of the ________ .

• a) KDJ
• b) JDK
• c) DKJ
• d) DJK

Question 10: Java is an __________ language and here it differs from C.

• a) Procedure-oriented
• b) Structure-oriented
• c) Object-oriented
• d) Executable-oriented

Question 11: Using _______one can take full advantage of object-oriented methodology and its capabilities of creating flexible, modular and reusable code.

• a) Java
• b) C
• c) Basic
• d) PHP

Question 12: _______ has classes to support networking, common Internet protocols and user interface toolkit functions.

• a) KDJ
• b) JDK
• c) DKJ
• d) DJK

Question 13: ______ is platform-independent at both the source and binary level.

• a) Java
• b) C
• c) Basic
• d) PHP

Question 14: At ______ level, platform-independence is possible due to byte code interpreter.

• a) Beginning
• b) Destination
• c) Source
• d) Binary

Question 15: ______ independence is a program’s capability of being moved easily from one computer system to another.

• a) Table
• b) Program
• c) Library
• d) Platform

Question 16: At the ______ level, Java’s primitive data types have consistent sizes across all development platforms.

• a) Beginning
• b) Destination
• c) Source
• d) Binary

Question 17: Programs written in Java are compiled into____________language for a computer that doesn’t really exist.

• a) Machine
• b) Assembly
• c) C++
• d) Java

Question 18: The designers of Java chose to use a combination of ______ and interpretation.

• a) Assembling
• b) Compilation
• c) Togetherness
• d) All of these

Question 19: Full form of JDK is_________

• a) Java Developing Kit
• b) Java Development Kit
• c) Both (A) and (B)
• d) None of these

Question 20: The machine language for the Java Virtual Machine is called Java___________

• a) byte
• b) byte numbers
• c) byte code
• d) bytes

Question 21: The so-called “virtual” computer is known as

• a) JMV
• b) VMJ
• c) JVM
• d) MVJ 21)

Question 22: The full form of JVM is____________

• a) Java Virtual Machine
• b) Java Visible Machine
• c) Java Viable Machine
• d) None of these

Question 23: A disadvantage of using__________is its slow execution speed.

• a) ASCII codes
• b) binary numbers
• c) byte codes
• d) bytes

Question 24: Different Java byte code__________is needed for each type of computer.

• a) Compiler
• b) Interpreter
• c) Translator
• d) None of these

Question 25: Java binary files are actually in a form called________that is not specific to any one processor or any operating system.

• a) bytes
• b) binary numbers
• c) byte codes
• d) byte

Question 26: A Java Program should have at least one____________and it must have main___________in it

• a) Class, procedure
• b) Class, variable
• c) Class, method
• d) Class, code

Question 27: There are tools available tools to convert________into native code.

• a) Java Byte codes
• b) Java Language
• c) Java Complies
• d) All of these

Question 28: __________code is faster to execute, but then it does not remain machine independent.

• a) Native
• b) Original
• c) ASCII
• d) Binary

Question 29: _______________can provide much more than just a collection of data.

• a) Functions
• b) Classes
• c) Programs
• d) Variables

Question 30: A Java program is composed of____________

• a) Functions
• b) Classes
• c) Programs
• d) Variables

Question 31: C programmers can think of a class as a sort of creating a new composite data type by using_________and________

• a) Structures, type
• b) Functions, define
• c) Classes, type def
• d) Struct, type def

Question 32: Java_____files are given the same name as the class defined with an extension of Java.

• a) Beginning
• b) Destination
• c) Source
• d) Binary

Question 33: Note that__________is not available in Java.

• a) Type def
• b) Struct
• c) Both (A) and (B)
• d) All of these

Question 34: Java source file can be created using any plain_______text editor.

• a) Native
• b) Original
• c) ASCII
• d) Binary

Question 35: If class name is CallCost, filename should be

• a) callcost
• b) callcost.java
• c) callCost.java
• d) callcosT.java

Question 36: In Java the_______name is case sensitive.

• a) Folder
• b) Class
• c) First
• d) Last

Question 37: In Java the______name is case sensitive.

• a) File
• b) Folder
• c) First
• d) Last

Question 38: When the program gets compiled without errors, compiler created a file with extension________in the same directory as the source file

• a) .Java
• b) .javac
• c) .class
• d) .javaclass

Question 39: The source file is compiled using the_______compiler.

• a) S Cite
• b) C++
• c) Basic
• d) Java

Question 40: To compile the Java program, type________followed by the name the source file

• a) javac
• b) JavaC
• c) Java
• d) cjava

Question 41: Which of the following variable declarations is correct ?

• a) Double balance
• b) Double rate
• c) Double duration
• d) Double cost

Question 42: The programmer can run the application using Java______

• a) Compiler
• b) Translator
• c) Interpreter
• d) None of these

Question 43: In_______the Java interpreter is called by simply using Java

• a) JDK
• b) JKD
• c) JDD
• d) JKK

Question 44: A________’Java’ interprets byte code and excuses it.

• a) Compiler
• b) Translator
• c) Interpreter
• d) None of these

Question 45: Java source program file should have extension

• a) Java
• b) .javac
• c) .class
• d) .javaclass

Question 46: The name of_______is same as the class name containing main method and it has an extension .class.

• a) Interpreted file
• b) Code file
• c) Compiled file
• d) byte code file

Question 47: Comments are not compiled or interpreted

• a) Codes
• b) Classes
• c) Comments
• d) Methods

Question 48: The texts after________are comments.

• a) //
• b) \\
• c) // //
• d) \\ \\

Question 49:The text enclosed within_________are comments.

• a) /& and &/
• b) /* and */
• c) /* and *\
• d) //* and *//

Question 50: Computation part contains expressions including assignment___________

• a) Sentences
• b) Numerical
• c) Operators
• d) Statements

Question 51: Variables are declared using___________followed by variable name

• a) Data type
• b) Int
• c) Char
• d) Float

Question 52: Several___________(also called function or method in Java) call statements are used to display information to the user of the program

• a) Super routine
• b) Subroutine
• c) Sub program
• d) None of these

Question 53: ___________adds a line feed after the end of the information that it displays.

• a) out.print
• b) out.prindnt
• c) output.print
• d) output.println

Question 54: ____________are used to display results.

• a) Methods
• b) Classes
• c) Outputs
• d) Prints

Question 55: System.out.print and System.out.println are_________which take a value to be displayed as an argument.

• a) Methods
• b) Classes
• c) Outputs
• d) Prints

Question 56: It is the_________routine that determines how and in what the other subroutines are used.

• a) Main()
• b) String[]
• c) string[] args
• d) main()

Question 57: When the program is run, the Java interpreter calls the__________method and the statements that it contains are executed.

• a) Main()
• b) String[]
• c) string[] args
• d) main()

Question 58: The___________routine can call other subroutines that are defined in the same class or even in other classes.

• a) Main()
• b) String[]
• c) string[] args
• d) main()

Question 59: Start S Cite application. Select File ->

• a) Save
• b) New
• c) Open
• d) Start

Question 60: The word in the first line of main() means that this routine can be called from outside the program

• a) private
• b) Public
• c) public
• d) Private

Whoever needs to take the CBSE Class 12 Board Exam should look at this MCQ. To the Students who will show up in CBSE Class 12 Computer Science Board Exams, It is suggested to practice more and more questions. Aside from the sample paper you more likely had solved. These Java Basics Class 12 MCQ are ready by the subject specialists themselves.

Question 61: This is essential because the main() routine is called by the Java interpreter, which is__________to the program

• a) External
• b) Internal
• c) Outside
• d) Inside

Question 62: To compile a source program use___________Compile command.

• a) File
• b) Edit
• c) Tools
• d) Buffers

Question 63: To save the file, select File __________command.

• a) Save
• b) New
• c) Open
• d) Start

Question 64: _________editor is used to create Java application.

• a) Notepad
• b) Wordpad
• c) S Cite
• d) Word

 

Question 65: The rules that determine what is allowed to be used in a language are called the_________of the language

• a) Protocols
• b) Syntax
• c) Methodology
• d) Regulations

Question 66: If the program is compiled without any error, execute it using___________Go command

• a) File
• b) Edit
• c) Tools
• d) Buffers

Question 67: Programming____________differ from ordinary human languages in being completely unambiguous and very strict about what is and is not allowed in a program

• a) Rules
• b) Methods
• c) Files
• d) Languages

 

 

Question 68: In a Java program, text in__________bracket is used as a placeholder that describes something actual we need to type while writing actual program

• a) Curly
• b) Square
• c) Angle
• d) Round

 

Question 69: Which of the following is an Angle bracket

• a) <>
• b) { }
• c) ( )
• d) [ ]

Question 70: ____________rules specify the basic vocabulary of the language and how programs can be constructed using things like variables, expressions, statements, branches, loops and methods

• a) Protocol
• b) Syntax
• c) Methodology
• d) Regulation

 

Question 71: A syntactically correct program is one that can be successfully_________or interpreted

• a) Compiled
• b) Understood
• c) Executed
• d) Put together

 

 

Question 72: A method in Java program cannot exist by itself. It has to be a part of a___________

• a) Program
• b) Procedure
• c) List
• d) Class

Question 73: As Java is an object-oriented language. Everything is defined as part of_______

• a) Program
• b) Procedure
• c) List
• d) Class

 

Question 74: The definition of the method (function) in Java consists of function header and the sequence of statements enclosed between braces________

• a) <>
• b) { }
• c) ( )
• d) [ ]

 

 

Question 75: If the name of the class is CallCost, then the program should conventionally be saved in a Java source file with a name__________

• a) CallCost.class
• b) CallCost.java
• c) callcost.java
• d) CallCost

Question 76: Based on the structure of a Java program_____________in the first line is the name of the class having main method in it

• a) Class-name
• b) Public
• c) Class
• d) Name

 

Question 77: Class file, CallCost.class, contains the translation of the program into Java____________which can be executed by a Java interpreter

• a) bytes
• b) binary number
• c) bytecode
• d) byte

 

 

Question 78: Each program must have one______that contains public method main()

• a) Program
• b) Procedure
• c) List
• d) Class

Question 79: When this file is compiled, another file named_____________is generated

• a) CallCost.class
• b) CallCost.java
• c) callcost.java
• d) CallCost

 

Question 80: Variable and method declaration after and before___________method is optional

• a) main{}
• b) string[]
• c) string[] args
• d) main()

 

 

Question 81: The entire Java program can be written together on single line but______is important to make it more readable.

• a) Display
• b) Layout
• c) Plan
• d) Design

Question 82: The entire Java program can be written together on single line but_________is important to make it more readable

• a) Display
• b) Layout
• c) Plan
• d) Design

 

Question 83: Java is a______format language.

• a) Free
• b) Busy
• c) Object
• d) Class

 

 

Question 84: Which of the following are the basic Java statements used within a method definition such as main() ?

• a) Comments
• b) Java statements and expressions
• c) Arithmetic operators
• d) All of these

Question 85: A program can contain other methods besides_______as well as other variables.

• a) Main()
• b) String[]
• c) string[] args
• d) main()

 

Question 86: Which of the following are the basic java statements used within a method definition such as main()?

• a) Data Types
• b) Variables
• c) Literals
• d) All of these

 

 

Question 87: Java supports______primitive data types that handle common types for integers, floating point numbers, characters and Boolean values (true or false).

• a) Seven
• b) Eight
• c) Nine
• d) Ten

Question 88: Which of the following are the basic java statements used within a method definition such as main() ?

• a) Comparisons
• b) Logical operators
• c) Both (A) and (B)
• d) None of these

 

Question 89: _______determines the required memory size, type of values, range of values and type of operations that can be performed.

• a) Data Types
• b) Variables
• c) Literals
• d) All of these

 

Question 90: The next two data types hold_____

• a) Real numbers
• b) Integers
• c) Single character
• d) True or False

Question 91: Char data type holds a single character from the Unicode character set.

• a) Real numbers
• b) Integers
• c) Single character
• d) True or False

Question 92: The primitive______are named byte, short, int, long, float, double, char, Boolean.

• a) Data types
• b) Variables
• c) Literals
• d) All of these

Question 93: T&E first four data types hold_____

• a) Real numbers
• b) Integers
• c) Single character
• d) True or False

Question 94: In Java the______are machine-independent, this means that they can be relied on their sizes and characteristics to be consistent across all Java programs on all machines.

• a) Data Types
• b) Variables
• c) Literals
• d) All of these

Question 95: The Boolean data type holds one of the two logical values true or false.

• a) Real numbers
• b) Integers
• c) Single character
• d) True or False

Question 96: The data types in Java are called______as they are built into the system.

• a) Fixed
• b) Ancient
• c) Primitive
• d) New

Question 97: When the Integer numbers are preceded with keyword_____the values are in the range of (0, 2^b_1). 

• a) Signed
• b) Unsigned
• c) Boolean
• d) Byte

Question 98: _____in Java are complaint with IEEE 754 (an international standard for defining floating point numbers and arithmetic).

• a) Real numbers
• b) Integers
• c) Single character
• d) True or False

Question 99: Integer numbers with b bits_____store signed values in the range of (-2^b_1 -1, 2^b_1). 

• a) Accuracy
• b) Precision
• c) Exactness
• d) Vagueness

Question 100: Data type_____is not a number, nor can it be treated as one.

• a) Char
• b) Real
• c) Boolean
• d) Integer

Question 101: Java uses the Unicode_______set.

• a) Numerical
• b) IEEE
• c) Character
• d) None of these

Question 102: The char type has____bits of precision and is unsigned.

• a) 13
• b) 14
• c) 15
• d) 16

Question 103: In machine language, data can only be referred to by giving the______address of the location in memory where it is stored.

• a) Numerical
• b) Alphanumeric
• c) Alphabetical
• d) Real

Question 104: If anything is to be remembered by the computer, there will be a requirement of_____during program execution. It needs to be stored in the memory of the computer.

• a) Variables
• b) Literals
• c) Comments
• d) Operators

Question 105: ______manipulates the data that is stored in memory.

• a) Information
• b) Programs
• c) Comments
• d) Characters

Question 106: A_____can take different data values at different times during the execution of the program, but it always refers to the same memory location.

• a) Variable
• b) Literal
• c) Comment
• d) Operator

Question 107: In a______language such as Java, names are used instead of numeric address of memory location to refer to data.

• a) Low-level
• b) Middle-level
• c) High-level
• d) Top-level

Question 108: A name is used to refer to the data stored in memory and it is called a_____

• a) Variable
• b) Literal
• c) Comment
• d) Operator

Question 109: In Java, the conventional syntax of_____denote the item to be specified by user.

• a) Curly brackets
• b) Square brackets
• c) Angle brackets
• d) Round brackets

Question 110: A______can be used in a Java program only if it has been declared.

• a) Variable
• b) Literal
• c) Comment
• d) Operator

Question 111: One or more variables can be declared in Java using_____statement.

• a) Beginning
• b) Initial
• c) Declaration
• d) Comment

Question 112: When the list contains more than one item, items should be separated by_____

• a) Semi colon
• b) Commas
• c) Full stop
• d) Colon

Question 113: In Java, the conventional syntax of_____denote the list of items separated by commas.

• a) Curly brackets
• b) Square brackets
• c) Angle brackets
• d) Round brackets

Question 114: In syntax: {variable names}, it denote the list of____names.

• a) Variable
• b) Literal
• c) Comment
• d) Operator

Question 115: When the compute executes a variable____statement, it sets aside memory for the variable and associates the variable’s name with that memory.

• a) Data type
• b) Initial
• c) Declaration
• d) Comment

Question 116: In typical Java syntax, the is to be replaced with the keyword denoting the_____of the variables.

• a) Data types
• b) Variables
• c) Literals
• d) Comments

Question 117: ______is used to determine the size of variable, the values it can hold and the operations that can be performed on it.

• a) Real numbers
• b) Variables
• c) Data Types
• d) Floats

Question 118: Which of the following is true ?

• a) Java is case-sensitive
• b) Java is not case-sensitive
• c) Both (A) and (B)
• d) None of these

Question 119: Which of the following examples of variables is correct ?

• a) Int marks;
• b) Double amount, interest;
• c) Float rate;
• d) All of these

Question 120: Which of the following rule is incorrect while defining a variable name ?

• a) It must begin with an alphabet, underscore (_)
• b) It must begin with a percentage sign (%)
• c) No spaces are allowed in variables
• d) It cannot be a reserved word

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