練習問題

Question08-Method/.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>

Question08-Method/.gitignore

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+/build/

Question08-Method/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question08-Method</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>

Question08-Method/.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

Question08-Method/.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>

Question08-Method/src/main/java/Q8_1.java

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+
+public class Q8_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		hello();
+		
+		
+		
+	}
+
+	private static void hello() {
+		System.out.println("こんにちは");
+		
+	}
+
+}

Question08-Method/src/main/java/Q8_2.java

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+
+public class Q8_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		hello("山田");
+	}
+
+	public static void hello(String str) {
+		System.out.println("こんにちは。"+str+"です");
+	}
+	
+}

Question08-Method/src/main/java/Q8_3.java

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+
+public class Q8_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String str = hello();
+		
+		System.out.println(str);
+		
+		
+	}
+	
+	
+	public static String hello() {
+		return "こんにちは";
+	}
+}

Question08-Method/src/main/java/Q8_4.java

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+
+public class Q8_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int aiueo;
+		
+		aiueo = sum(1,2);
+		
+		System.out.println(aiueo);
+		
+	}
+
+	public static int sum(int x,int y) {
+		return x + y; 
+		
+	}
+}

Question08-Method/src/main/java/Q8_5.java

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+import java.util.Scanner;
+public class Q8_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.println("1つ目の数値を入力してください");
+		int num1 = sc.nextInt();
+		
+		System.out.println("2つ目の数値を入力してください");
+		int num2 = sc.nextInt();
+		
+		sum(num1,num2);
+		
+		System.out.println("結果:"+sum(num1,num2));
+		
+		sc.close();
+		
+	}
+
+	public static int sum(int x,int y) {
+		return x + y; 
+		
+	}
+}