Chapter 5, Problem 6AW

Program Plan Intro

Methods:

• The methods could be used to break a complex program into small pieces.
• The “void” method simply executes a statements group and then terminates.
• A value returning method would return a value to statement that has called it.
• While calling a method, program would branch to that method.
•  It would then execute statements in its body.
• The values that are sent into a method are termed as “arguments”.
• A “parameter” denotes a special variable that holds a value that is being passed into a method.
• The “passed by value” means that only copy of a value of argument is been passed into parameter variable.
• A “local variable” is been declared inside a method, it is not accessible for statements outside method.
• A process in which a problem is been divided into smaller pieces is termed as “functional decomposition”.

Example:

Consider the example of method definition which is given below:

Public static void method()

{

Statement;

}

Here, “statement” denotes the body of method, that is to be executed when “method()” is been called.

Given code:

//Define a method display()

public static void display(int arg1 , double arg2, char arg3)

{

//Display values

System.out.println("The values are " + arg1 + " " + arg2 + ", and"+ arg3);

}

//Intialize variable

char initial = 'T';

//Intialize variable

int age = 25;

//Intialize variable

double income = 50000.00;

Explanation:

• Define a method “display()” to display the values of arguments provided to method.
  • Display the values.
• Initialize values for variables “initial”, “age” and “income”.