端端舝

Java犯扒奶件由正奈件⻌嬡
菴2隙

踏゜及琌膽
1. Strategy
2. Facade

失伙打伉朮丞毛仍勻公曰ピ曰杸尹月

Strategy由正奈件
? 醴腔
? Strategy午反☆煾謹★午中丹砩庤﹝失伙打伉朮丞
毛灍蚾仄凶窒煦毛仍勻公曰蝠𡥼堤懂月方丹卞仄﹜
肮元�觳毛�e及源楊匹賤仁及毛⺍眢卞允月凶戶

Strategy扔件皿伙
? 元扎氏仃氏毛俴丹皿伕弘仿丞
? 1勾醴及煾謹ㄩ�勻凶日棒及忒手肮元忒毛堤允
(WinningStrategy)
? 2勾醴及煾謹ㄩ1隙ゴ及忒井日棒及忒毛復薹腔卞
�呾允月(ProbStrategy)

扔件皿伙弁仿旦珨笊
弁仿旦靡

賤掊

Hand

元扎氏仃氏及☆忒★毛桶允弁仿旦

Strategy

元扎氏仃氏及☆煾謹★毛桶允奶件正奈白尼奈旦

WinningStrategy

�勻凶日棒手肮元忒毛堤允煾謹毛桶允弁仿旦

ProbStrategy

1隙ゴ及忒井日棒及忒毛復薹腔卞�呾允月煾謹毛桶允弁仿
旦

Player

元扎氏仃氏毛俴丹皿伊奶乩奈毛桶允弁仿旦

Main

�釬氾旦玄蚚及弁仿旦

Hand.java
public class Hand {
// 弘奈
public static final int HANDVALUE_GUU = 0;
// 民亦平
public static final int HANDVALUE_CHO = 1;
// 由奈
public static final int HANDVALUE_PAA = 2;
public static final Hand[] hand = {
new Hand(HANDVALUE_GUU),
new Hand(HANDVALUE_CHO),
new Hand(HANDVALUE_PAA),
};
private static final String[] name = {
"弘奈", "民亦平", "由奈",
};
private int handvalue;

Hand.java
private Hand(int handvalue) {
this.handvalue = handvalue;
}
public static Hand getHand(int handvalue) {
return hand[handvalue];
}
public boolean isStrongerThan(Hand h) {
return fight(h) == 1;
}
public boolean isWeakerThan(Hand h) {
return fight(h) == -1;
}

Hand.java

}

private int fight(Hand h) {
if (this == h) {
return 0;
} else if ((this.handvalue + 1) % 3 == h.handvalue) {
return 1;
} else {
return -1;
}
}
@Override
public String toString() {
return name[handvalue];
}

Strategy.java
public interface Strategy {
public abstract Hand nextHand();
public abstract void study(boolean win);
}

WinningStrategy.java
import java.util.Random;
public class WinningStrategy implements Strategy {
private Random random;
private boolean won;
private Hand prevHand;
public WinningStrategy(int seed) {
random = new Random(seed);
}
@Override
public Hand nextHand() {
if (!won) {
prevHand = Hand.getHand(random.nextInt(3));
}
return prevHand;
}
@Override
public void study(boolean win) {
won = win;
}
}

ProbStrategy.java
import java.util.Random;
public class ProbStrategy implements Strategy {
private Random random;
private int prevHandValue = 0;
private int currentHandValue = 0;
private int[][] history = {
{1,1,1,},
{1,1,1,},
{1,1,1,},
};
public ProbStrategy(int seed) {
random = new Random(seed);
}

ProbStrategy.java
@Override
int bet = random.nextInt(getSum(currentHandValue));
int handvalue = 0;
if (bet < history[currentHandValue][0]) {

} else if (bet < history[currentHandValue][0] +
history[currentHandValue][1]) {
handvalue = 1;
} else {
handvalue = 2;
}
prevHandValue = currentHandValue;
currentHandValue = handvalue;
return Hand.getHand(handvalue);
}

ProbStrategy.java
private int getSum(int hv) {
int sum = 0;
for (int i = 0; i < 3; i++) {
sum += history[hv][i];
}
return sum;
}
@Override
public void study(boolean win) {
if (win) {
history[prevHandValue][currentHandValue]++;
} else {
history[prevHandValue][(currentHandValue + 1) % 3]++;
history[prevHandValue][(currentHandValue + 2) % 3]++;
}
}
}

Player.java
public class Player {
private String name;
private Strategy strategy;
private int wincount;
private int losecount;
private int gamecount;
public Player(String name, Strategy strategy) {
this.name = name;
this.strategy = strategy;
}
return strategy.nextHand();
}

Player.java
public void win() {
strategy.study(true);
wincount++;
gamecount++;
}
public void lose() {
strategy.study(false);
losecount++;
gamecount++;
}
public void even() {
gamecount++;
}
@Override
public String toString() {
return "[" + name + ":" + gamecount + " games, " + wincount + "win, " +
losecount + " lose]";
}
}

Main.java
import framwork.Factory;
import framwork.Product;
import idcard.IDCardFactory;
public class Main {
public static void main(String[] args) {
Factory factory = new IDCardFactory();
Product card1 = factory.create("泬笢");
Product card2 = factory.create("�躂");
Product card3 = factory.create("詢憷");
card1.use();
card2.use();
card3.use();
}
}

扔件皿伙皿伕弘仿丞娗逋
? Strategy(煾謹)及砢
? 煾謹毛瞳蚚允月凶戶及奶件正奈白尼奈旦

? ConcreteStrategy(撿极腔卅煾謹)及砢
? Strategy砢及奶件正奈白尼奈旦毛灍蕣卞灍蚾允月
弁仿旦﹝撿极腔卅煾謹(釬煾?源習?源楊?失伙
打伉朮丞)毛灍蕣卞皿伕弘仿立件弘允月

? Context(恅犢)及砢
? Strategy砢毛瞳蚚允月弁仿旦﹝ConcreteStrategy砢
及奶件旦正件旦毛厥勻化中化﹜斛猁卞𡛟元化瞳蚚
允月

憝窣仄化中月由正奈件
? Flyweight由正奈件
? ConcreteStrategy砢反﹜Flyweight由正奈件毛妏勻
化恚杅預垀井日僕衄堤懂月�磁互丐月

? AbstractFactory由正奈件
? 撿极腔卅馱�?窒ⅲ?庨ⅲ毛仍勻公曰ピ曰杸尹月
仇午互堤懂月

? State由正奈件
? State由正奈件手Strategy由正奈件手午手卞痄莌珂
毛ピ曰杸尹月由正奈件

栳�1
? 匹凶日戶卞棒及忒毛堤允RandomStrategy弁仿旦
毛釬傖仄卅今中

Facade由正奈件
? 醴腔
? 皿伕弘仿丞反分氏分氏午操湮趙仄化中仁�A砃互丐
月﹝
? 湮五卅皿伕弘仿丞毛妏勻化�I燴毛俴丹凶戶卞反﹜
憝�S仄丐勻化中月凶仁今氏及弁仿旦毛羥ピ卞秶郘
允月斛猁互丐月﹝
? ��e卞秶郘允月及反湮劐卅及匹﹜☆�諳★毛⺍眢
仄﹜☆�諳★卞�仄化猁А毛堤允分仃匹謎中方丹
卞允月

扔件皿伙弁仿旦珨笊
由永弗奈斥

弁仿旦靡

賤掊

pagemaker

Singleton

丟奈伙失玉伊旦井日交奈扒奈靡毛腕月弁仿旦

pagemaker

HtmlWriter

HTML白央奶伙毛釬傖允月弁仿旦

pagemaker

PageMaker

丟奈伙失玉伊旦井日交奈扒及Web矢奈斥毛釬傖允
月弁仿旦

剠靡

Main

�釬氾旦玄蚚及弁仿旦

Database.java
package facade.pagemaker;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
public class Database {
private Database() {
// new 匹奶件旦正件旦汜傖今六卅中凶戶
卞private哫晟
}

Database.java
public static Properties getProperties(String dbname) {
String filename = dbname + ".txt";
Properties properties = new Properties();
try {
properties.load(new
FileInputStream(filename));
} catch(IOException e) {
System.out.println("Warning : " +
filename + "is not found." );
}
return properties;
}
}

犯奈正白央奶伙(maildata.txt)
?
?
?
?

ykato@ykato.com=Yukiko Kato
hanako@ykato.com=Hanako Sato
tomura@ykato.com=Tomura
mamoru@ykato.com=Mamoru Takahashi

HtmlWriter.java
package pagemaker;
import java.io.Writer;
public class HtmlWriter {
private Writer writer;
public HtmlWriter(Writer writer) {
this.writer = writer;
}
public void title(String title) throws IOException {
writer.write("<html>");
writer.write("<head>");
writer.write("<title>" + title + "</title>");
writer.write("</head>");
writer.write("<body>n");
writer.write("<h1>" + title + "</h1>n");
}

HtmlWriter.java
public void paragrah(String msg) throws IOException {
writer.write("<p>" + msg + "</p>");
}
public void link(String href, String caption) throws IOException {
paragrah("<a href="" + href + "">" + caption + "</a>");
}
public void mailto(String mailaddr, String username) throws
IOException {
link("mailto:" + mailaddr, username);
}
public void close() throws IOException {
writer.write("</body>");
writer.write("</html>n");
writer.close();
}
}

PageMaker.java
package pagemaker;
import java.io.FileWriter;
import java.util.Properties;
public class PageMaker {

晟

private PageMaker() {
// 奶件旦正件旦反釬日卅中及匹private哫
}

PageMaker.java
public static void makeWelcomePage(String mailaddr, String filename) {
try {
Properties mailprop = Database.getProperties("maildata");
String username = mailprop.getProperty(mailaddr);
HtmlWriter writer = new HtmlWriter(new
FileWriter(filename));
writer.title("Welcome to " + username + "'s page!");
writer.paragrah(username + "及矢奈斥尺方丹仇公﹝");
writer.paragrah("丟奈伙渾勻化引允友");
writer.mailto(mailaddr, username);
writer.close();
System.out.println(filename + " is created for " + mailaddr + "
(" + username + ")");
} catch (IOException e) {
e.printStackTrace();
}
}
}

Main.java
import facade.pagemaker.PageMaker;
public class Main {

public static void main(String[] args) {
PageMaker.makeWelcomePage("ykato@ykato.c
om", "welcome.html");
}
}

Facade由正奈件及腎��昜
? Facade(淏醱)及砢
? 扑旦氾丞毛�傖仄化中月公及坻湮�及砢及扑件皿
伙卅�諳

? 扑旦氾丞毛�傖仄化中月公及坻湮�及砢
? 公木冗木及帊岈毛俴丹互﹜Facade砢及仇午反砩舑
仄卅中﹝Facade井日網太堤今木化帊岈毛俴丹互﹜
公及坻湮�井日Facade砢毛網太堤允仇午反卅中

? Client(甡螸�)及砢
? Facade由正奈件毛瞳蚚允月砢

憝窣仄化中月由正奈件
? AbstractFactory由正奈件
? 左皮斥尼弁玄汜傖午中丹恚螝卅釬𦲀卞憝允月
Facade由正奈件午心卅允仇午互堤懂月
? ☆左皮斥尼弁玄毛汜傖允月卞反﹜仇及丟末永玉毛
網屯壬OK★

? Singleton由正奈件
? Facade砢反Singleton由正奈件午仄化釬日木月仇午
互丐月

? Mediator由正奈件
? Facade反珨源砃匹妏蚚允月互﹜Mediator由正奈件
反邧源砃匹丐月

統蕉
? [�娗蜊�唳]Java晟惤匹悝少犯扒奶件由正奈件
⻌嬡
? 磐傑瘋翍

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