Writing Methods

Create the method A Method is a tool to do something It contains the code that performs the job Methods have two parts

Create the method The first part is called the Header modifier return name public void message( ) { open & closing braces }

Methods have two parts The second part is called the Body The body contains the lines of code that instruct the computer what to do You can have as many lines of code in the body as you want

Methods have two parts This Body has two lines of code It tells the computer to print to the screen the text that is inside the set of double quotes after skipping a blank line public void message( ) { System.out.println(); System.out.println(“java is not kawfy”); }

Create a Class To use the method we need to create a simple class The class is like a tool bag It can hold one or many tools (methods) The class also has a Header and a Body

Create a Class The first part is called the Header modifier structure name public class MyMethods { open & closing braces }

Create a Class The second part is called the Body The body contains one or more methods public class MyMethods { public void message() System.out.println(); System.out.println(“java is not kawfy”); }

Create an Application An Application is an executable program It uses the methods of different classes to execute the program Some methods are from the Java Class Library Other methods are from the Classes that We wrote

Create an Application We will create an object (instance) of the class We will call (use) a method of the class The Application class also has a Header and a Body The Application has one method named main

Create an Application Syntax: public class RunMyMethods { public static void main(String [] args) MyMethods mm = new MyMethods(); mm.message(); //class object calls method }

Compile and Run Compile … correct any syntax errors Run … check for correct output If necessary make any corrections Then recompile and rerun.