Intro to Java: Chapters 1 and 2

What is a Computer Program?

• A Machine that Perform Tasks

• A Set of Instructions for the Computer

• A high-level language

• A Graphical User Interface (GUI)

What is an object in object-oriented programming?

• A blueprint for a class

• A method of programming

• A specific instance of a class

• An integer variable

Which Java keyword makes a method accessible even if no object of the class exists?

• private

• void

• static

• public

What does the 'System.out.println()' statement do?

• Prints an integer to the console

• Displays a GUI window

• Compiles the code

• Prints text to the console

What is the main method's role in a Java application?

• It displays a message

• It serves as the entry point of the program

• It defines variables

• It creates objects

What is a variable in Java?

• A memory location to store data

• A part of the operating system

• A reserved keyword

• A block of code

Which data type should you use to store whole numbers in Java?

• float

• double

• int

• boolean

Which Data Type is a Reference Data Type?

• int

• double

• boolean

• String

What does the 'Scanner' class in Java allow you to do?

• Perform arithmetic

• Store values in variables

• Accept input from the keyboard

• Create a dialog box

Which symbol is used for the assignment operator in Java?

• ==

• <

• >

• =