Objects

Objects

1. Types

   • Define what kind of variable the variable is
     • Primitive
       • The default types, that have no methods that can be called on them. Some of these include int, boolean, char, etc.
         • int: whole numbers
         • long: like double, but gives more digits
         • double:numbers to the thousandth place
         • float: used for money(not necessary for test)
     • Objects
       • Have methods the programmer can use. One example is a string.

2. Methods

   • Describe the actions/rules of a class.
   • Describe the actions/rules of a class.
     • Accessor (Getter) methods
       • Give information to the programmer about an object of the class type, for example getting a variable the object has. 
       • Give information to the programmer about an object of the class type, for example getting a variable the object has.
     • Mutator (Doer) methods
       • Allows for the programmer to change an object with the class type
       • Allows for the programmer to change an object with the class type

3. Classes

   • Give the rules and actions that objects of that type can do.
   • Give the rules and actions that objects of that type can do.

4. Referencing an object

   • Similar to referencing a variable, you call the name of the object. You can use a method of the object by calling the name plus a dot plus the name of the method you wish to use. For example, student.getName();. "student" is the name of the object, and "getName()" is the name of the method.

5. assignment operator(=)

   • Allows you to give a value to a variable/object.