Some Important Over Java Basics Questions

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| By Tahinenippon
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Tahinenippon
Community Contributor
Quizzes Created: 1 | Total Attempts: 131
| Attempts: 131
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  • 1/6 Questions

    Java is 

    • A island
    • An object oriented programming language
    • A binary language
    • An assembler
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About This Quiz

Explore the fundamentals of Java through this engaging quiz titled 'Some important over Java Basics questions'. It assesses knowledge on object-oriented programming, data types, constants, and basic Java syntax, along with a practical task to calculate the area of a circle.

Some Important Over Java Basics Questions - Quiz

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  • 2. 

    What does the println function do

    • Print out the program

    • Print the line of the output in the console

    • Execute a method

    • Print a statement from printer

    Correct Answer
    A. Print the line of the output in the console
    Explanation
    The println function is used to print a line of output in the console. It is commonly used in programming languages like Java or Python to display information to the user. When the println function is called, it prints the specified message or variable to the console, allowing the user to see the output of the program. This is different from simply executing a method or printing a statement from a printer.

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  • 3. 

    A constant is declared by using the keyword

    • Int

    • Double

    • MAX

    • Final

    Correct Answer
    A. Final
    Explanation
    A constant is declared by using the keyword "final". The keyword "final" is used in Java to declare a variable that cannot be changed once it has been assigned a value. This means that the value of a final variable remains constant throughout the program. Using the "final" keyword ensures that the variable cannot be accidentally modified, providing consistency and preventing unintended changes to the value.

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  • 4. 

    Which is not a data type

    • Integer

    • String

    • Variable

    • Boolean

    • Character

    Correct Answer
    A. Variable
    Explanation
    The given options consist of different data types. Integer, String, boolean, and character are all valid data types. However, "variable" is not a data type itself, but rather a way to store and manipulate data of different types. Variables can hold values of various data types such as integers, strings, booleans, or characters.

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  • 5. 

    The main method is the first executed after the constructor method executes

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because the constructor method is the first method that is executed when an object is created. The main method, on the other hand, is the entry point of a Java program and is called by the Java Virtual Machine (JVM) after the constructor method has executed.

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  • 6. 

    Write a program which produce the following output The radius is 7cm PI is 3.14 Area of the circle is 38.465sqcm

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  • Current Version
  • May 06, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 26, 2012
    Quiz Created by
    Tahinenippon
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