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SH1679: Classes, Objects and Methods (Part 1) - Class Method Definitions

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SH1679: Classes, Objects and Methods (Part 1) - Class Method Definitions

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Questions and Answers

What is the main purpose of public modifiers in Java?

Hide implementation details

Restrict access to program entities

Change data stored in private instance variables

Allow unrestricted use of program entities (correct)

Which term refers to a public method that changes data stored in one or more private instance variables?

Accessor

Encapsulation

Setter

Mutator (correct)

What is the primary function of private modifiers in Java?

Restrict access within a class method definition (correct)

Change data stored in private instance variables

Combine data and actions into a single item

Return data from a private instance variable

Which aspect of a class does encapsulation primarily focus on?

Hiding implementation details Signup and view all the answers

In Java, what do access modifiers collectively refer to?

Restrictions on program entity access Signup and view all the answers

What is the common starting keyword for method identifiers that return data from private instance variables?

'get' Signup and view all the answers

What are instance variables in Java?

Variables declared outside any method, constructor or code block Signup and view all the answers

Which type of methods return a single value or object?

Methods that derive data from a task or operation Signup and view all the answers

What is the purpose of the 'this' keyword in Java?

References the name of an object receiving a method call Signup and view all the answers

Where are local variables declared in Java?

Within a method definition Signup and view all the answers

What is the purpose of information hiding in programming?

To restrict access to some object components Signup and view all the answers

How do methods help in programming?

By categorizing statements to perform operations Signup and view all the answers