完成w6作业

1/src/VariableTest.java

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+package PACKAGE_NAME;
+
+public class VariableTest {
+}

1/src/j.java

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+package PACKAGE_NAME;
+
+public class j {
+}

lianxi/src/com/test/Test.java

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+package com.test;
+
+public class Test {
+}

w6/.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+.kotlin
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

w6/.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 已忽略包含查询文件的默认文件夹
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/

w6/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

w6/.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/w6.iml" filepath="$PROJECT_DIR$/w6.iml" />
+    </modules>
+  </component>
+</project>

w6/.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

w6/src/Animal.java

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+public abstract class Animal {
+    public abstract void makeSound();
+}

w6/src/Cat.java

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+public class Cat extends Animal{
+    @Override
+    public void makeSound(){
+        System.out.println("小猫喵喵叫：喵喵喵");
+    }
+}

w6/src/Dog.java

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+public 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("小狗会游泳");
+    }
+}

w6/src/Main.java

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+public class Main {
+    public static void main(String[] args){
+        Animal myDog = new Dog();
+        Animal myCat =new Cat();
+        System.out.println("=== 动物叫声测试 ===");
+        myDog.makeSound();
+        myCat.makeSound();
+        System.out.println("\n=== 游泳能力测试 ===");
+        if (myDog instanceof Swimmable) {
+            ((Swimmable) myDog).swim();
+        }
+        if (myCat instanceof Swimmable) {
+            ((Swimmable) myCat).swim();
+        }else {
+            System.out.println("小猫不会游泳");
+        }
+    }
+}

w6/src/Swimmable.java

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+public interface Swimmable {
+    void swim();
+}

w6/w6.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>