小傅哥 | 重学 Java 设计模式：实战原型模式

.gitignore

@@ -6,3 +6,6 @@
 /itstack-demo-design-3-01/itstack-demo-design-3-01.iml
 /itstack-demo-design-3-02/itstack-demo-design-3-02.iml
 /itstack-demo-design-3-00/itstack-demo-design-3-00.iml
+/itstack-demo-desgin-4-01/itstack-demo-desgin-4-01.iml
+/itstack-demo-design-4-02/itstack-demo-design-4-02.iml
+/itstack-demo-design-4-00/itstack-demo-design-4-00.iml

README.md

@@ -1,2 +1,7 @@
-# itstack-demo-design
-设计模式案例
+# 重学 Java 设计模式
+
+- [`重学 Java 设计模式：实战工厂方法模式`](https://bugstack.cn/itstack-demo-design/2020/05/20/%E9%87%8D%E5%AD%A6Java%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F-%E5%AE%9E%E6%88%98%E5%B7%A5%E5%8E%82%E6%96%B9%E6%B3%95%E6%A8%A1%E5%BC%8F.html)
+- [`重学 Java 设计模式：实战抽象工厂模式`](https://bugstack.cn/itstack-demo-design/2020/05/24/%E9%87%8D%E5%AD%A6Java%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F-%E6%8A%BD%E8%B1%A1%E5%B7%A5%E5%8E%82%E6%A8%A1%E5%BC%8F.html)
+- [`重学 Java 设计模式：实战建造者模式`](https://bugstack.cn/itstack-demo-design/2020/05/26/%E9%87%8D%E5%AD%A6Java%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F-%E5%AE%9E%E6%88%98%E5%BB%BA%E9%80%A0%E8%80%85%E6%A8%A1%E5%BC%8F.html)
+- [`重学 Java 设计模式：实战原型模式`](https://bugstack.cn/itstack-demo-design/2020/05/28/%E9%87%8D%E5%AD%A6-Java-%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F-%E5%AE%9E%E6%88%98%E5%8E%9F%E5%9E%8B%E6%A8%A1%E5%BC%8F.html)
+

itstack-demo-desgin-4-01/pom.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http:https://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http:https://maven.apache.org/POM/4.0.0 http:https://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <parent>
+ <artifactId>itstack-demo-design</artifactId>
+ <groupId>org.itstack</groupId>
+ <version>1.0-SNAPSHOT</version>
+ </parent>
+ <modelVersion>4.0.0</modelVersion>
+
+ <artifactId>itstack-demo-desgin-4-01</artifactId>
+
+
+</project>

itstack-demo-desgin-4-01/src/main/java/org/itstack/demo/design/QuestionBankController.java

@@ -0,0 +1,82 @@
+package org.itstack.demo.design;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class QuestionBankController {
+
+ public String createPaper(String candidate, String number) {
+
+ List<ChoiceQuestion> choiceQuestionList = new ArrayList<ChoiceQuestion>();
+ List<AnswerQuestion> answerQuestionList = new ArrayList<AnswerQuestion>();
+
+ Map<String, String> map01 = new HashMap<String, String>();
+ map01.put("A", "JAVA2 EE");
+ map01.put("B", "JAVA2 Card");
+ map01.put("C", "JAVA2 ME");
+ map01.put("D", "JAVA2 HE");
+ map01.put("E", "JAVA2 SE");
+
+ Map<String, String> map02 = new HashMap<String, String>();
+ map02.put("A", "JAVA程序的main方法必须写在类里面");
+ map02.put("B", "JAVA程序中可以有多个main方法");
+ map02.put("C", "JAVA程序中类名必须与文件名一样");
+ map02.put("D", "JAVA程序的main方法中如果只有一条语句，可以不用{}(大括号)括起来");
+
+ Map<String, String> map03 = new HashMap<String, String>();
+ map03.put("A", "变量由字母、下划线、数字、$符号随意组成；");
+ map03.put("B", "变量不能以数字作为开头；");
+ map03.put("C", "A和a在java中是同一个变量；");
+ map03.put("D", "不同类型的变量，可以起相同的名字；");
+
+ Map<String, String> map04 = new HashMap<String, String>();
+ map04.put("A", "STRING");
+ map04.put("B", "x3x;");
+ map04.put("C", "void");
+ map04.put("D", "de$f");
+
+ Map<String, String> map05 = new HashMap<String, String>();
+ map05.put("A", "31");
+ map05.put("B", "0");
+ map05.put("C", "1");
+ map05.put("D", "2");
+
+ choiceQuestionList.add(new ChoiceQuestion("JAVA所定义的版本中不包括", map01, "D"));
+ choiceQuestionList.add(new ChoiceQuestion("下列说法正确的是", map02, "A"));
+ choiceQuestionList.add(new ChoiceQuestion("变量命名规范说法正确的是", map03, "B"));
+ choiceQuestionList.add(new ChoiceQuestion("以下()不是合法的标识符", map04, "C"));
+ choiceQuestionList.add(new ChoiceQuestion("表达式(11+3*8)/4%3的值是", map05, "D"));
+ answerQuestionList.add(new AnswerQuestion("小红马和小黑马生的小马几条腿", "4条腿"));
+ answerQuestionList.add(new AnswerQuestion("铁棒打头疼还是木棒打头疼", "头最疼"));
+ answerQuestionList.add(new AnswerQuestion("什么床不能睡觉", "牙床"));
+ answerQuestionList.add(new AnswerQuestion("为什么好马不吃回头草", "后面的草没了"));
+
+ // 输出结果
+ StringBuilder detail = new StringBuilder("考生：" + candidate + "\r\n" +
+ "考号：" + number + "\r\n" +
+ "--------------------------------------------\r\n" +
+ "一、选择题" + "\r\n\n");
+
+ for (int idx = 0; idx < choiceQuestionList.size(); idx++) {
+ detail.append("第").append(idx + 1).append("题：").append(choiceQuestionList.get(idx).getName()).append("\r\n");
+ Map<String, String> option = choiceQuestionList.get(idx).getOption();
+ for (String key : option.keySet()) {
+ detail.append(key).append("：").append(option.get(key)).append("\r\n");
+ ;
+ }
+ detail.append("答案：").append(choiceQuestionList.get(idx).getKey()).append("\r\n\n");
+ }
+
+ detail.append("二、问答题" + "\r\n\n");
+
+ for (int idx = 0; idx < answerQuestionList.size(); idx++) {
+ detail.append("第").append(idx + 1).append("题：").append(answerQuestionList.get(idx).getName()).append("\r\n");
+ detail.append("答案：").append(answerQuestionList.get(idx).getKey()).append("\r\n\n");
+ }
+
+ return detail.toString();
+ }
+
+}

itstack-demo-desgin-4-01/src/test/java/org/itstack/demo/desgin/test/ApiTest.java

@@ -0,0 +1,16 @@
+package org.itstack.demo.desgin.test;
+
+import org.itstack.demo.design.QuestionBankController;
+import org.junit.Test;
+
+public class ApiTest {
+
+ @Test
+ public void test_QuestionBankController() {
+ QuestionBankController questionBankController = new QuestionBankController();
+ System.out.println(questionBankController.createPaper("花花", "1000001921032"));
+ System.out.println(questionBankController.createPaper("豆豆", "1000001921051"));
+ System.out.println(questionBankController.createPaper("大宝", "1000001921987"));
+ }
+
+}

itstack-demo-design-4-00/pom.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http:https://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http:https://maven.apache.org/POM/4.0.0 http:https://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <parent>
+ <artifactId>itstack-demo-design</artifactId>
+ <groupId>org.itstack</groupId>
+ <version>1.0-SNAPSHOT</version>
+ </parent>
+ <modelVersion>4.0.0</modelVersion>
+
+ <artifactId>itstack-demo-design-4-00</artifactId>
+
+
+</project>

itstack-demo-design-4-00/src/main/java/org/itstack/demo/design/AnswerQuestion.java

@@ -0,0 +1,34 @@
+package org.itstack.demo.design;
+
+/**
+ * 解答题
+ */
+public class AnswerQuestion {
+
+ private String name; // 问题
+ private String key; // 答案
+
+ public AnswerQuestion() {
+ }
+
+ public AnswerQuestion(String name, String key) {
+ this.name = name;
+ this.key = key;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public String getKey() {
+ return key;
+ }
+
+ public void setKey(String key) {
+ this.key = key;
+ }
+}

itstack-demo-design-4-00/src/main/java/org/itstack/demo/design/ChoiceQuestion.java

@@ -0,0 +1,46 @@
+package org.itstack.demo.design;
+
+import java.util.Map;
+
+/**
+ * 单选题
+ */
+public class ChoiceQuestion {
+
+ private String name; // 题目
+ private Map<String, String> option; // 选项；A、B、C、D
+ private String key; // 答案；B
+
+ public ChoiceQuestion() {
+ }
+
+ public ChoiceQuestion(String name, Map<String, String> option, String key) {
+ this.name = name;
+ this.option = option;
+ this.key = key;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public Map<String, String> getOption() {
+ return option;
+ }
+
+ public void setOption(Map<String, String> option) {
+ this.option = option;
+ }
+
+ public String getKey() {
+ return key;
+ }
+
+ public void setKey(String key) {
+ this.key = key;
+ }
+}

itstack-demo-design-4-00/src/test/java/org/itstack/demo/design/test/ApiTest.java

@@ -0,0 +1,29 @@
+package org.itstack.demo.design.test;
+
+import com.alibaba.fastjson.JSON;
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+
+public class ApiTest {
+
+ @Test
+ public void test_clone() throws CloneNotSupportedException {
+ ArrayList<String> l01 = new ArrayList<String>();
+ l01.add("xxx");
+ l01.add("yyy");
+
+ ArrayList<String> l02 = (ArrayList<String>) l01.clone();
+ l02.add("zzz");
+
+ System.out.println(JSON.toJSONString(l01));
+ System.out.println(JSON.toJSONString(l02));
+
+ l01.remove("xxx");
+
+ System.out.println(JSON.toJSONString(l01));
+ System.out.println(JSON.toJSONString(l02));
+ }
+
+}

itstack-demo-design-4-02/pom.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http:https://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http:https://maven.apache.org/POM/4.0.0 http:https://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <parent>
+ <artifactId>itstack-demo-design</artifactId>
+ <groupId>org.itstack</groupId>
+ <version>1.0-SNAPSHOT</version>
+ </parent>
+ <modelVersion>4.0.0</modelVersion>
+
+ <artifactId>itstack-demo-design-4-02</artifactId>
+ <dependencies>
+ <dependency>
+ <groupId>org.itstack</groupId>
+ <artifactId>itstack-demo-design-4-00</artifactId>
+ <version>1.0-SNAPSHOT</version>
+ <scope>compile</scope>
+ </dependency>
+ </dependencies>
+
+
+</project>

itstack-demo-design-4-02/src/main/java/org/itstack/demo/design/QuestionBank.java

@@ -0,0 +1,82 @@
+package org.itstack.demo.design;
+
+import org.itstack.demo.design.util.Topic;
+import org.itstack.demo.design.util.TopicRandomUtil;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Map;
+
+public class QuestionBank implements Cloneable {
+
+ private String candidate; // 考生
+ private String number; // 考号
+
+ private ArrayList<ChoiceQuestion> choiceQuestionList = new ArrayList<ChoiceQuestion>();
+ private ArrayList<AnswerQuestion> answerQuestionList = new ArrayList<AnswerQuestion>();
+
+ public QuestionBank append(ChoiceQuestion choiceQuestion) {
+ choiceQuestionList.add(choiceQuestion);
+ return this;
+ }
+
+ public QuestionBank append(AnswerQuestion answerQuestion) {
+ answerQuestionList.add(answerQuestion);
+ return this;
+ }
+
+ @Override
+ public Object clone() throws CloneNotSupportedException {
+ QuestionBank questionBank = (QuestionBank) super.clone();
+ questionBank.choiceQuestionList = (ArrayList<ChoiceQuestion>) choiceQuestionList.clone();
+ questionBank.answerQuestionList = (ArrayList<AnswerQuestion>) answerQuestionList.clone();
+
+ // 题目乱序
+ Collections.shuffle(questionBank.choiceQuestionList);
+ Collections.shuffle(questionBank.answerQuestionList);
+ // 答案乱序
+ ArrayList<ChoiceQuestion> choiceQuestionList = questionBank.choiceQuestionList;
+ for (ChoiceQuestion question : choiceQuestionList) {
+ Topic random = TopicRandomUtil.random(question.getOption(), question.getKey());
+ question.setOption(random.getOption());
+ question.setKey(random.getKey());
+ }
+ return questionBank;
+ }
+
+ public void setCandidate(String candidate) {
+ this.candidate = candidate;
+ }
+
+ public void setNumber(String number) {
+ this.number = number;
+ }
+
+ @Override
+ public String toString() {
+
+ StringBuilder detail = new StringBuilder("考生：" + candidate + "\r\n" +
+ "考号：" + number + "\r\n" +
+ "--------------------------------------------\r\n" +
+ "一、选择题" + "\r\n\n");
+
+ for (int idx = 0; idx < choiceQuestionList.size(); idx++) {
+ detail.append("第").append(idx + 1).append("题：").append(choiceQuestionList.get(idx).getName()).append("\r\n");
+ Map<String, String> option = choiceQuestionList.get(idx).getOption();
+ for (String key : option.keySet()) {
+ detail.append(key).append("：").append(option.get(key)).append("\r\n");;
+ }
+ detail.append("答案：").append(choiceQuestionList.get(idx).getKey()).append("\r\n\n");
+ }
+
+ detail.append("二、问答题" + "\r\n\n");
+
+ for (int idx = 0; idx < answerQuestionList.size(); idx++) {
+ detail.append("第").append(idx + 1).append("题：").append(answerQuestionList.get(idx).getName()).append("\r\n");
+ detail.append("答案：").append(answerQuestionList.get(idx).getKey()).append("\r\n\n");
+ }
+
+ return detail.toString();
+ }
+
+}