Chapter 6: Methods

Question 1

What is a method?

Answer 1

A group of statements that are combined in order to perform an operation.

Question 2

What’s the structure of a method?

Answer 2

modifier returnValueType methodName(list of parameters) {
//Method Body
}

EXAMPLE:

public static int max(int num1, int num 2){

int result;

if (num1 > num2)
result = num1;
else
result = num1;

return result;
}

Question 3

When should you use a void method versus a value-return method?

Answer 3

Void methods are used when the operation the method completes does not return a value. Otherwise, if you need a value then you would use a value-returning method.

Question 4

What is/are a parameter(s)?

Answer 4

A parameter are the variables that are defined in the method header. Parameters are place holders for values that get passed to the method when invoked.

Question 5

What is a call stack?

Answer 5

Every time a method is called and executed, the program creates a record of the parameters and variables and stores it in memory known as the call stack.

Question 6

When do you use a return statement in a void method?

Answer 6

When you want to terminate the method at a certain point.

Question 7

What is pass-by-value?

Answer 7

When you invoke an argument and pass the value(s) of the argument to the parameter(s).

Question 8

What is method overloading?

Answer 8

It is when you have two or more of the exact methods, but their parameter arguments are different. Depending on what pass-by-value variable you use it will call a different method.