// data types come in 2 varieties, simple (int,char,float) and classes
// String, ArrayList ....
// note that this makes the classes we have created so far data as well as programs
// most things in Java programs (if not quite all) are classes

// Java programs are created by making lots of classes to represent chunks of functionality (for example a monster)

import java.util.*;

public class J03DataTypes
{
  public static void main(String[] args)
  {
    // making an "instance" of a preexisting class (from the util library)
    ArrayList a = new ArrayList();
    Float b = new Float(5); // note that this is a class, and not the same as float with a lower case f
    // calling a function on a class
    System.out.println(b.toString()); // tostring is a function (method) within b

    // We can make instances of our own classes
    J02Methods c = new J02Methods();
    // but there is no point right now
  }
}