練習問題

Question13-Extends/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
+	<classpathentry kind="src" path="src/main/java"/>
+	<classpathentry kind="output" path="build/classes"/>
+</classpath>

Question13-Extends/.gitignore

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+/build/

Question13-Extends/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question13-Extends</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.common.project.facet.core.builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

Question13-Extends/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
+org.eclipse.jdt.core.compiler.compliance=21
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=21

Question13-Extends/.settings/org.eclipse.wst.common.project.facet.core.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question13-Extends/src/main/java/Animal.java

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+
+public class Animal {
+	private String name;
+	
+	public void print() {
+		System.out.println(this.name + "は走りました。");
+		System.out.println(this.name + "は食事をしました。");
+		
+		
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+}

Question13-Extends/src/main/java/Cat.java

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+
+public class Cat extends Animal {
+
+}

Question13-Extends/src/main/java/Dog.java

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+
+public class Dog extends Animal{
+	
+	
+	public void print() {
+		System.out.println(this.getName() + "は走りました。");
+		System.out.println(this.getName() + "ドッグフードを食べました。");
+	}
+}

Question13-Extends/src/main/java/Q13_1.java

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+
+public class Q13_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		Cat cat = new Cat();
+		cat.setName("タマ");
+			
+		cat.print();
+	}
+
+}

Question13-Extends/src/main/java/Q13_2.java

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+
+public class Q13_2 {
+	public static void main(String[] args) {
+		Dog dog = new Dog();
+		dog.setName("ポチ");
+		
+		dog.print();
+}
+}