Java Programming midterm exam

What defines a class in a Java program?

• public static void main(String[] args)

• public class HelloWorld

• System.out.println()

• import java.util.Scanner

What symbol is used to terminate a Java statement?

• Colon (:)

• Semicolon (;)

• Comma (,)

• Period (.)

What is the starting point of any Java program?

• The first line of the file

• The main method

• The class declaration

• The import statement

Which of the following is used to denote the beginning and end of a block in Java?

• Parentheses ()

• Square brackets []

• Curly braces {}

• Angle brackets <>

What is the purpose of the public keyword in a class declaration?

• It makes the class accessible to other classes from other packages.

• It restricts the class to the same package.

• It prevents the class from being instantiated.

• It makes the class immutable.

Which of the following is NOT a type of Java comment?

• Single-line (//)

• Multi-line (/* */)

• Javadoc (/** */)

• Inline (#)

What is the correct way to write a single-line comment in Java?

• /* This is a comment */

• // This is a comment

• # This is a comment

Which of the following is a valid Java identifier?

• 1stVariable

• _variableName

• class

• my-variable

What is the naming convention for class names in Java?

• All lowercase letters

• First letter capitalized (PascalCase)

• All uppercase letters

• Words separated by underscores

Which of the following is an invalid identifier?

• totalAmount

• studentName

• 123value

• $salary