Cant get Methods

[LOL123]

Hi,
I need to make a program that calculates the area of a circle. I have to get the input then use a method to calculate the area. I dont really understand methods I have read wtd's tutorial but still a bit unclear on how to create the method in my program and make it do what I need it to.
This is my code so far:

code:

import java.io.*; class method {   public static void main (String args [])     throws java.io.IOException   {     BufferedReader br = new BufferedReader (new InputStreamReader (System.in));         int radius = 0;     String input = "";     radius = Integer.parseInt (input);     System.out.println ("Please enter a number from the radius of a circle.");     input = br.readLine();    } }

[TheGuardian001]

You know that

code:

public static void main(String[] args) { stuff }

That you put in every program?

That's a method. Creating a custom method works exactly the same way as writing main.

code:

(public OR private OR protected) [static] (return type) methodName([parameters]) {     code; }

Where static and parameters are optional, and return type is any data type/class or void (no return.) You can name the method whatever you want (even if there's already a method with that name, so long as they have different parameters. Methods are generally public.

If you want to call a method directly from main, it must be declared static (since main is always static). When you call a method, any code inside that method is run, after which the program will pick up where it left off.

As an example, here's a method that will accept an integer, multiply it by 2, and return the new value.

Java:

class MyClass {     public static void main(String[] args)     {          int x = doubleNum(3); //program will go find the "doubleNum" method in this class, and run it                                          //with '3' as the parameter. assign this value to the variable x.          //The program then returns back to this point, and continues. Let's output our new number.          System.out.println(x);     }     /*This Creates:        a method that is static (so we can call it from main, since main is also static)        a method that returns an integer (int doubleNum)        a method that accepts one integer (which is referred to inside the method by the name "number")     */     public static int doubleNum(int number)     {          //calculate our value          int temp = 2 * number;          //return tells Java that the method is done, and to go back to where the main program left off, and to give the          //specified value to the program. in this case, 2 times whatever number the method was called with.          return temp;      } }

[slider203]

Also if you want your method stored in a diffrent file you can use code like this:

code:

class <classname> {     variables used public static int area() {   steps in method } }

You will have to use an object to access the method in your program though.