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2010-06-01T05:00:58Z

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2010-05-31T17:44:27Z

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== Methods ==

<OL><LI>Methods define actions that a class"s objects (or instances) can do.</LI><LI>A method has a declaration part and a body.</LI><LI>The declaration part consists of a return value, the method name, and a list of arguments.</LI><LI>The body contains code that perform the action.</LI><LI>The return type of a method can be a primitive, an object, or void.</LI><LI>The return type void means that the method returns nothing.</LI><LI>The declaration part of a method is also called the signature of the method.</LI></OL>
<p>For example, here is the getSalary method that returns a double.</p>



<source lang="java">
public class MainClass {
double getSalary() {
return 0.0;
}
}</source>



== Passing Objects to a Method ==



<source lang="java">
class Sphere {
double radius; // Radius of a sphere
Sphere() {
}
// Class constructor
Sphere(double theRadius) {
radius = theRadius; // Set the radius
}
}
public class MainClass {
public static void main(String[] arg){
Sphere sp = new Sphere();

aMethod(sp);
}

private static void aMethod(Sphere sp){
System.out.println(sp);
}
}</source>



== Returning From a Method ==



<source lang="java">
public class MainClass {
private int aField;
public void aMethod() {
}
public double volume() {
return 50;
}

}</source>

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