Java Notes

fielsdAndMethods

Java Class has two primary elements.
1. methods
2. function
Together these called the member of the Class.

Method has return type such as String, Int

and there is a spacial type called void which means no value at all.

parameter:
    This method requires that information be supplied to it from the calling method.this information is called a parameter.
    ```{Java}
    public int numberOfVisitors(int month){
        return 10;
    }
    ```
    Here the method signature is numberOfVisitors(int)

Rule for main class:
    * Each file can contain only one public class
    * The filename must match the class name, including case , and have a .java extension.
    * If the java class is na entry point for the program, it must contain a valid main() method.


Keywords
1. Public: in main() method is called access modifier.
2. static: it binds a method to its class so it can be called bty just the class name.