Modularisation Flashcards
What is the purpose of methods?
To divide large complicated programs into smaller manageable pieces.
What are the two general categories of methods?
- Program Control
- Specific Task
What is the return type in a method declaration?
The type of value that the method returns.
What is a formal parameter?
A variable declared in the method header that accepts input when the method is called.
What is the difference between a void method and a value-returning method?
A void method does not return a value, while a value-returning method does.
Fill in the blank: The process of transferring control to a called method is known as _______.
method calling
What is method overloading?
Defining multiple methods with the same name but different parameters.
What does it mean to pass parameters by value?
A copy of the value will be passed to a method
True or False: In Java, arrays are considered objects.
True
What are the eight primitive data types in Java?
- byte
- short
- int
- long
- float
- double
- char
- boolean
What is the scope of a variable?
The part of the program in which it may be referenced.
What is the duration of an identifier?
The time during which it exists in memory.
How do actual parameters differ from formal parameters?
Actual parameters are supplied when the method is called, while formal parameters are declared in the method header.
What is the significance of the main method?
It is where the program starts executing code.
What is the primary role of parameters in methods?
To communicate data between the calling program and the method being called.
True or False: A method can exist without being called.
True
Fill in the blank: The _______ keyword allows us to create methods that do not return a value.
void
What is the difference between method declarations and method calls?
Method declarations define the method’s structure, while method calls execute the method.
What is an array in Java?
An array is an object and its name is an object reference variable. The array must be instantiated using ‘new’.
True or False: In Java, an array can be passed as a parameter to a method.
True
What happens to the original array when an element is changed within a method?
The original array is changed.
List three goals of refactoring code.
- Improve internal structure
- Simplify complex logic
- Reduce code duplication
What is NOT a purpose of refactoring?
Adding new features.
Describe the Extracting Method technique in refactoring.
Breaking down a large function into smaller, more manageable functions.
