201671010128 2017-10-30 "Java program Design" of the generic programming

First, the basic concept

1. Generics are also known as parameterized types (parameterized type), that is, when defining classes, interfaces, and methods, the type parameter indicates the type of object that will be processed. (e.g. ArrayList Class)
2. Generic Programming (Generic programming) means that writing code can be reused by many different types of objects.
3. A generic class (generic Class) is a class that has one or more type variables, that is, a class that is created with a type as a parameter.

Second, some characteristics

1. A generic class can have more than one type variable. For example: public class pair<t, u> {...}
2. A type variable in a class definition is used to specify the return type of the method and the type of the domain, local variable.

Iii. generic methods

1. In addition to generic classes, you can define only one method as a generic method, specifying either a method parameter or a return value of a generic type, to be determined when the method is called.
2. A generic method can be declared in a generic class or declared in a normal class.

Four, object-oriented programming curriculum learning progress bar

Moonphases	Number of lines of code (read/write)	Post Blog volume/Comment blog number	Classroom/after-school time (hours)	The most satisfying programming task
First week	20/7	1/1	6/4	Write the Hello World program
Second week	38/20	1/1	6/5	Experiment two task three
Third week	50/30	1/1	6/7	Experiment Three
Week Four	58/46	1/1	6/5	Write the output n digits of the numbers, and sum
Week Five	67/53	1/1	6/6	Classes are defined and overloaded
Week Six	71/60	1/1	6/4	Interface
Eighth Week	80/66	1/1	6/3	LAMDBA-expression
Nineth Week	85/60	1/1	6/2	Operation of the ID
Tenth Week	121/80	1/	6/2	Experiment Nine
......
Cumulative	590/415	9/8	54/38

201671010128 2017-10-30 "Java program Design" of the generic programming