From 236d7ae1260f9d6980b3d389c1771a9038f50c53 Mon Sep 17 00:00:00 2001 From: ZhangJinxuan <2194936226@qq.com> Date: Sun, 19 Apr 2026 19:22:15 +0800 Subject: [PATCH 1/4] =?UTF-8?q?=E4=B8=8A=E4=BC=A0w6=E9=87=8C=E7=9A=84?= =?UTF-8?q?=E6=89=80=E6=9C=89Java=E6=96=87=E4=BB=B6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 动物叫声系统.java | 31 +++++++++++++++++++++++++++++++ 测试.java | 23 +++++++++++++++++++++++ 2 files changed, 54 insertions(+) create mode 100644 动物叫声系统.java create mode 100644 测试.java diff --git a/动物叫声系统.java b/动物叫声系统.java new file mode 100644 index 0000000..563e4ee --- /dev/null +++ b/动物叫声系统.java @@ -0,0 +1,31 @@ +abstract class Animal { + // 抽象方法：动物叫声 + public abstract void makeSound(); +} + +// 2. Swimmable 接口 +interface Swimmable { + // 游泳方法 + void swim(); +} + +// 3. Dog 类：继承 Animal，实现 Swimmable +class Dog extends Animal implements Swimmable { + @Override + public void makeSound() { + System.out.println("小狗汪汪叫：汪汪汪！"); + } + + @Override + public void swim() { + System.out.println("小狗在水里狗刨式游泳！"); + } +} + +// 4. Cat 类：继承 Animal，不实现 Swimmable +class Cat extends Animal { + @Override + public void makeSound() { + System.out.println("小猫喵喵叫：喵喵喵！"); + } +} \ No newline at end of file diff --git a/测试.java b/测试.java new file mode 100644 index 0000000..6abb25b --- /dev/null +++ b/测试.java @@ -0,0 +1,23 @@ +public class AnimalTest { + public static void main(String[] args) { + // 多态方式创建对象 + Animal dog = new Dog(); + Animal cat = new Cat(); + + // 调用 makeSound 方法（多态体现） + System.out.println("=== 动物叫声测试 ==="); + dog.makeSound(); + cat.makeSound(); + + // 测试 Swimable 接口（Dog 能游泳，Cat 不能） + System.out.println("\n=== 游泳能力测试 ==="); + if (dog instanceof Swimmable) { + ((Swimmable) dog).swim(); + } + if (cat instanceof Swimmable) { + ((Swimmable) cat).swim(); + } else { + System.out.println("小猫不会游泳哦！"); + } + } +} \ No newline at end of file From e95d7ecd943c8f546b1aad83d30fc79bd8742204 Mon Sep 17 00:00:00 2001 From: ZhangJinxuan <2194936226@qq.com> Date: Mon, 27 Apr 2026 14:20:44 +0800 Subject: [PATCH 2/4] =?UTF-8?q?=E7=AC=AC=E4=B8=80=E6=AC=A1=E6=8F=90?= =?UTF-8?q?=E4=BA=A4=EF=BC=9A=E4=B8=8A=E4=BC=A0w7=E6=96=87=E4=BB=B6?= =?UTF-8?q?=E5=A4=B9=E6=89=80=E6=9C=89=E6=96=87=E4=BB=B6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ScoreAverge.java | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 ScoreAverge.java diff --git a/ScoreAverge.java b/ScoreAverge.java new file mode 100644 index 0000000..3716739 --- /dev/null +++ b/ScoreAverge.java @@ -0,0 +1,46 @@ +import java.io.BufferedReader; +import java.io.FileReader; +import java.io.IOException; + +public class ScoreCalculator { + public static void main(String[] args) { + String fileName = "scores.txt"; + int sum = 0; + int count = 0; + + // try-with-resources 自动关闭流，无需手动写 br.close() + try (BufferedReader br = new BufferedReader(new FileReader(fileName))) { + String line; + while ((line = br.readLine()) != null) { + // 去除字符串前后空格，避免空行或空格影响解析 + line = line.trim(); + if (line.isEmpty()) { + continue; // 跳过空行 + } + + try { + // 解析成绩为整数 + int score = Integer.parseInt(line); + sum += score; + count++; + } catch (NumberFormatException e) { + // 数字格式错误处理 + System.err.println("警告：无法解析成绩 '" + line + "'，跳过该数据"); + } + } + + // 计算平均分 + if (count > 0) { + double average = (double) sum / count; + System.out.println("平均分：" + average); + } else { + System.out.println("文件中没有有效成绩数据"); + } + + } catch (IOException e) { + // 文件不存在、读取错误处理 + System.err.println("读取文件时发生错误：" + e.getMessage()); + e.printStackTrace(); + } + } +} \ No newline at end of file From be6b9f8cb7df9c7bc8082c0acc7fc905a26ed9bb Mon Sep 17 00:00:00 2001 From: ZhangJinxuan <2194936226@qq.com> Date: Mon, 11 May 2026 15:57:24 +0800 Subject: [PATCH 3/4] =?UTF-8?q?'=E4=B8=8A=E4=BC=A0=E4=BF=AE=E6=94=B9?= =?UTF-8?q?=E7=9A=84=E4=BB=A3=E7=A0=81Article.java=E6=96=87=E4=BB=B6'?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Article.java | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Article.java diff --git a/Article.java b/Article.java new file mode 100644 index 0000000..5e19b06 --- /dev/null +++ b/Article.java @@ -0,0 +1,53 @@ +package com.example.datacollect.model; +import java.util.Date +public class Article { + private String title; + private String url; + private String content; + private String author; + private String Date publishDate; + public Article(String title, String url, String content,String author,Date publishDate) { + this.title = title; + this.url = url; + this.content = content; + this.author = author; + this.publishDate= publishDate; + } + + public String getTitle() { + return title; + } + + public void setTitle(String title) { + this.title = title; + } + + public String getUrl() { + return url; + } + + public void setUrl(String url) { + this.url = url; + } + + public String getContent() { + return content; + } + + public void setContent(String content) { + this.content = content; + } + public String getAuthor(){ + return author; + } + public void setAuthor(String author){ + this.author= author; + } + @Override + public String toString() { + return "Article{" + + "title='" + title + '\'' + + ", url='" + url + '\'' + + '}'; + } +} From 911d0fba4c9bc39638c08fc06097e1315e3d1e53 Mon Sep 17 00:00:00 2001 From: ZhangJinxuan <2194936226@qq.com> Date: Mon, 25 May 2026 14:52:44 +0800 Subject: [PATCH 4/4] =?UTF-8?q?=E4=B8=8A=E4=BC=A0w10=E6=96=87=E4=BB=B6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Article.java | 59 ++++++++++++++++++++++++++++++++++++++++++++ HistoryCommmand.java | 17 +++++++++++++ 2 files changed, 76 insertions(+) create mode 100644 Article.java create mode 100644 HistoryCommmand.java diff --git a/Article.java b/Article.java new file mode 100644 index 0000000..358503f --- /dev/null +++ b/Article.java @@ -0,0 +1,59 @@ +package com.example.datacollect.model; +import java.util.Date +public class Article { + private String title; + private String url; + private String content; + private String author; + private Date publishDate; + public Article(String title, String url, String content,String author,Date publishDate) { + this.title = title; + this.url = url; + this.content = content; + this.author = author; + this.publishDate= publishDate; + } + + public String getTitle() { + return title; + } + + public void setTitle(String title) { + this.title = title; + } + + public String getUrl() { + return url; + } + + public void setUrl(String url) { + this.url = url; + } + + public String getContent() { + return content; + } + + public void setContent(String content) { + this.content = content; + } + public String getAuthor(){ + return author; + } + public void setAuthor(String author){ + this.author= author; + } + public Date getPublishDate() { + return publishDate; + } + public void setPublishDate(Date publishDate) { + this.publishDate = publishDate; + } + @Override + public String toString() { + return "Article{" + + "title='" + title + '\'' + + ", url='" + url + '\'' + + '}'; + } +} \ No newline at end of file diff --git a/HistoryCommmand.java b/HistoryCommmand.java new file mode 100644 index 0000000..7310ed5 --- /dev/null +++ b/HistoryCommmand.java @@ -0,0 +1,17 @@ +import java.util.ArrayList; +import java.util.List; + +public class HistoryCommand { + // 存储所有输入过的命令 + private final List commandHistory = new ArrayList<>(); + + // 添加命令 + public void addCommand(String cmd) { + commandHistory.add(cmd); + } + + // 获取全部历史 + public List getHistory() { + return new ArrayList<>(commandHistory); // 防御性拷贝，避免外部修改 + } +} \ No newline at end of file