Parameters
Description
Parameters receive input when a method is called.
Explanation
They act as local variables inside that method.
Example
static void greet(String name) { }← Chapter 5 — Arrays, Memory & Methods
21. Methods
mixed
Description
Methods group a named piece of behavior so it can be reused. A well-named method makes a program read like a sequence of useful actions.
Methods can accept parameters and return a result. Keep each method focused on one job so it is easy to test and change.
Subtopics
Return values
Description
A return statement sends a result back.
Explanation
The declared return type must match the returned value.
Example
static int add(int a, int b) { return a + b; }Explanation
static methods belong to the class and can be called from main directly. Instance methods belong to objects, which you will explore in object-oriented programming.
Example
public class MethodDemo {
static int total(int first, int second) {
return first + second;
}
public static void main(String[] args) {
System.out.println(total(42, 50));
}
}Key points
- Methods organize reusable behavior.
- Parameters provide input.
- return sends a result back.