Basics Of Java Programming Language Quiz

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  • 1/12 Questions

    Before you start: if something is written in quotation marks("quote") then it means Java code What is the name for an application that changes a human-readable programming language into a machine-readable language?

    • Compiler
    • Converter
    • Encoder
    • Decoder
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About This Quiz

Are you a hoard core Java programmer? If so, you must be aware of the basics of the Java programming language. This quiz will tell you if your basics are strong or if you still need more practice. Java is a high-level and object-oriented programming language used to develop mobile, web, and desktop apps. What else do you know about Java? Let's test out how good you score here on this quiz. All the best, coder!

Basics Of Java Programming Language Quiz - Quiz

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  • 2. 

    What will be output of  x in following code? "class Test{ public static void main(String[] args) { int x = 1; if (x == 1) { x = x + 1} } }"

    • 0

    • 1

    • 2

    • 3

    Correct Answer
    A. 2
    Explanation
    The code initializes the variable x to 1. Then, it checks if x is equal to 1. Since the condition is true, the code inside the if statement is executed. The code increments the value of x by 1. Therefore, the final value of x will be 2.

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  • 3. 

    What's the common term for an error within a computer program's code that prevents it from functioning properly?

    • A glitch

    • A hack

    • A bug

    • All of these

    Correct Answer
    A. A bug
    Explanation
    A bug is the common term for an error within a computer program's code that prevents it from functioning properly. Bugs can cause various issues such as crashes, unexpected behavior, or incorrect output. They can occur due to mistakes made by the programmer, compatibility issues, or other factors. The term "bug" originated from an incident where an actual insect caused a malfunction in a computer system.

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  • 4. 

    What is a variable?

    • An unpredictable element in a Java program

    • A program that can run fast or slow depending on user input

    • A way to hold data temporarily in a program

    • An unpredictable program in a Java program

    Correct Answer
    A. A way to hold data temporarily in a program
    Explanation
    A variable is a way to hold data temporarily in a program. It is used to store and manipulate values that can be changed during the execution of the program. Variables provide a means to store information that can be accessed and modified as needed, allowing for dynamic and flexible programming.

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  • 5. 

    What does SDK stand for?

    • Software Development Kit

    • Software Developer Kit

    • Software Dynamic Kit

    • Science Development Kit

    Correct Answer
    A. Software Development Kit
    Explanation
    An SDK stands for Software Development Kit. It is a collection of software tools, libraries, and documentation that developers use to create and maintain software applications for specific platforms or frameworks. The SDK provides a set of resources and tools that help developers streamline the development process, including sample code, debugging tools, and documentation.

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  • 6. 

    What is the difference between "int" and "INT"?

    • "int" and "INT" are both this same

    • "int" is not this same as "INT" because of java's case sensivity

    • "int" is not this same as "INT" because of java's case sensivity of First letter in every word

    • All of the above

    Correct Answer
    A. "int" is not this same as "INT" because of java's case sensivity
    Explanation
    "int" and "INT" are not the same because of Java's case sensitivity. In Java, variable names are case sensitive, meaning that "int" and "INT" are considered to be two different identifiers. This means that if you declare a variable as "int", you cannot refer to it as "INT" or vice versa. Java treats them as separate entities and will throw an error if you try to use them interchangeably. Therefore, the correct answer is that "int" is not the same as "INT" because of Java's case sensitivity.

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  • 7. 

    Is Java short for "JavaScript"?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Java is not short for "JavaScript". While both are programming languages, they are completely different and have distinct purposes. Java is a general-purpose programming language that is widely used for developing various applications, while JavaScript is primarily used for web development and adding interactivity to websites. Therefore, the statement "Java is short for 'JavaScript'" is false. 

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  • 8. 

    Does eclipse have another compiler then default Java one?

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    Eclipse does not have another compiler other than the default Java compiler. Eclipse uses the Java Development Tools (JDT) plugin, which internally utilizes the Java compiler (javac) provided by the Java Development Kit (JDK). This means that Eclipse uses the same compiler as the default Java compiler for compiling Java code. Therefore, the correct answer is "No."

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  • 9. 

    What's the extension for a compiled Java file?

    • .class

    • .java

    • .xml

    • .html

    Correct Answer
    A. .class
    Explanation
    The extension for a compiled Java file is .class. This is because when a Java program is compiled, it is converted into bytecode, which is stored in a .class file. This file can then be executed by the Java Virtual Machine (JVM). The .class extension distinguishes the compiled Java file from the original .java source code file.

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  • 10. 

    Which applications can you use to edit Java code?

    • Any Text editor

    • Software development environments (Eclipse, IDE)

    • Graphic Editor (Photoshop)

    • Both A and B

    Correct Answer
    A. Both A and B
    Explanation
    Both a text editor and software development environments (such as Eclipse or IDE) can be used to edit Java code. A text editor allows for manual editing of the code, while software development environments provide additional features like syntax highlighting, code completion, and debugging tools to aid in the development process. A graphic editor like Photoshop is not suitable for editing Java code, as it is primarily used for image editing. Therefore, the correct answer is "Both A and B."

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  • 11. 

    What is "String"?

    • Type of variable that stores text

    • Type of variable that stores text and numbers

    • Type of variable that stores numbers

    • All of these

    Correct Answer
    A. Type of variable that stores text and numbers
    Explanation
    The correct answer is "Type of variable that stores text and numbers." This is because a string is a data type in programming that is used to represent text. It can store a combination of letters, numbers, and special characters. Therefore, it is a type of variable that can store both text and numbers.

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  • 12. 

    Why do we have to use "int" and "String"?

    • Because on "String" we are not able to do math calculations

    • Because "String" is for text and numbers and "int" for numbers

    • Because "String" takes more memory(RAM) then "int"

    • All of these

    Correct Answer
    A. All of these
    Explanation
    The correct answer is All of these. We have to use "int" and "String" because "String" is used for storing text and "int" is used for storing numbers. Additionally, "String" does not support math calculations. Furthermore, it is true that "String" takes more memory (RAM) than "int".

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  • Current Version
  • Jan 04, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • May 29, 2011
    Quiz Created by
    Mafiu95
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