Complete Java SE 8 Developer Bootcamp - Creating Object Types - Part 2

What are instance variables in a Java class?

• Variables that are only accessible within a method

• Variables that are unique to each instance of a class

• Variables that are shared across all instances of a class

• Variables that are only used for static methods

What is the purpose of adding a modifier like 'public' to an instance variable?

• To make the variable accessible only within its class

• To make the variable accessible to all code in the program

• To make the variable accessible only to subclasses

• To make the variable immutable

What is the return type of a method that does not return any value?

• int

• boolean

• String

• void

Which of the following is NOT a required component of a method in Java?

• Return type

• Default value

• Method name

• Curly braces

How can you dynamically include the value of an instance variable in a string?

• By using the '+' operator for concatenation

• By using the '-' operator for subtraction

• By using the '/' operator for division

• By using the '*' operator for multiplication

What does the '+' operator do when used with strings in Java?

• Subtracts one string from another

• Concatenates two strings

• Adds two numbers

• Divides one string by another

What is the purpose of method parameters in Java?

• To define the return type of a method

• To specify the method's name

• To pass data into a method

• To declare the method's visibility