this pattern is create object of goupe.

not implements this issue.

mediator pattern

this pattern is non conflict object.

memento pattern

visitor pattern

this pattern is summarize two class into one class.

this pattern is not implements.

becaouse it is easy.

it is easy

refaerence

java drive lang-jp

command pattern

it is easy

chain method pattern

! point

    // 責任のチャーンを構築
    hand1.setNext(hand2).setNext(hand3).setNext(hand11);
    hand1.request(31);

object A,B,C

A call setNext(B) -> return B <- this B call setNext(C) -> return C ・・・・

call to change return object is throw object.

interpreter pattern

interpreter pattern

facade pattern

it is easy

observer pattern

lang-jp description

design pattern gof 23

design pattern is general. However , you do not need to use them all 23 patterns

consider the gof

implements lesson code

design pattern for gof with 23

1 Iterator - refs #6

2 Adapter - refs #7

3 TemplateMethod - refs #8

4 FactoryMethod - refs #4

5 Singlton - refs #9

6 Prototype - refs #10

7 Builder - refs #5

8 AbstractFactory - refs #11

9 Bridge - refs #12

10 Strategy - refs #13

11 Composit - refs #14

12 Decorator - refs #15

13 Visitor - refs #16

14 ChainOfResponsiblility -refs #17

15 Facade - refs #18

16 Mediator -refs #19

17 observer - refs #20

17 Memento -refs #21

19 State - refs #3

20 Flayweight -refs #22

21 Proxy -refs #23

22 Command -refs #24

23 InterPreter - refs #25

it is easy

!caution

not iterator. it is iterator pattern.

if you use itarator. import java.util.iterator