/* SaysHello.java
Example of a Java class with a main method
which prints stuff out
*/

// classes in Java are organized into packages
// this line tells Java which package this class is in
package helloworld.chapin;

// example class with a main method
// this is a class -- the basic unit in Java
// the name of the class is SaysHello
// everything inside the curly braces is part of the class
public class SaysHello {
    
    // note, if you put code HERE it is "in your main class" but not "in the main"
    
    
    // main method is the part of the program that runs
    // it must be declared exactly like this
    public static void main(String[] args) {
    	// everything inside the curly braces is part of the main method
    	// so code you put here is "in the main"

        // System.out is part of an existing Java library
        // someone else wrote it, we can use it

        // println is a method that knows how to print
        // it will print whatever we put into the parentheses
        // what we put in the parens are called arguments
        // use double quotes to say exactly what to print
        System.out.println("Hello World");
        
        // print( prints without a new line
        // \n is a special code for putting in a new line
        // this does the same thing as 
        // System.out.println(" hell ");  
        // System.out.println("world ");
        System.out.print("Oh ");
        System.out.print(" hell \n world \n");

        // no arguments --> all we get is a new line
        System.out.println();
        // another way to get a new line
        System.out.print("\n");

        // some things are tricky to print, use \ to "escape" them so Java knows what you mean
        System.out.println("I can print double quote \" ");       
        System.out.println("I can print backslash \\ ");
        
        System.out.println("Bye now.");
        
    } // main method ends here



    // if you put code here it is "in your main class" but not "in the main"
    
} // class ends here

// no code should ever go here