Methods - Example
Posted on: July 26, 2006 at 12:00 AM
Posted on: July 26, 2006 at 12:00 AM
This example shows a simple method that computes the area of a rectangle.
Java Notes
Methods - Example
Example
This example shows a simple method that computes the area of a rectangle:
1. public static int computeArea(int width, int height) {
2. int area; // This is a local variable
3. area = width * height;
4. return area;
5. }
- Line 1
- This is the method header. The first
intindicates that the value this method returns is going to be an integer. The name of the function is "computeArea", and it has two integer parameters:widthandheight. - Line 2...4
- The body of the method starts with the left brace, "{", on the end of the
first line. The "{" doesn't have to be on the same line as the
header, but this is a common style.
The body of this simple function contains a declaration on line 2, an assignment statement in line 3, and a
returnstatement on line 4. If a method returns a value, then there must be at least one return statement. Avoidmethod (one which does not return a value), does not require areturnstatement, and will automatically return at the end of the method.