完了済 10/9 別解追記

Question01-StartProgram/.classpath

@@ -0,0 +1,6 @@
+<?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>

Question01-StartProgram/.gitignore

@@ -0,0 +1 @@
+/build/

Question01-StartProgram/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question01-StartProgram</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>

Question01-StartProgram/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+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

Question01-StartProgram/.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question01-StartProgram/src/main/java/Question1_1.java

@@ -0,0 +1,11 @@
+
+public class Question1_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		System.out.println("`Hello,world`");
+		
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_2.java

@@ -0,0 +1,16 @@
+
+public class Question1_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		//1行だけを無効化する方法
+		/*
+		複数行をまとめて無効化する方法
+		*/
+		
+		System.out.println("テスト");
+		
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_3.java

@@ -0,0 +1,16 @@
+
+public class Question1_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		//変数strを宣言して代入する
+		String str;
+		str = "こんにちは";
+		
+		//出力
+		System.out.println(str);
+		
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_4.java

@@ -0,0 +1,15 @@
+
+public class Question1_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		//変数numberを値10で初期化する
+		int number = 10;
+		
+		//出力
+		System.out.println(number);
+
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_5.java

@@ -0,0 +1,15 @@
+
+public class Question1_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		//変数chを値Aで初期化する
+		char ch = 'A';
+		
+		//出力
+		System.out.println(ch);
+		
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_6.java

@@ -0,0 +1,15 @@
+
+public class Question1_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		//変数boを値trueで初期化する
+		boolean bo = true;
+		
+		//出力
+		System.out.println(bo);
+		
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_7.java

@@ -0,0 +1,15 @@
+
+public class Question1_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		//変数loを値1000000000000で初期化する
+		long lo = 1000000000000L;
+		
+		//出力
+		System.out.println(lo);
+
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_8.java

@@ -0,0 +1,15 @@
+
+public class Question1_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		//変数flを値3.14で初期化する
+		float fl = 3.14F;
+				
+		//出力
+		System.out.println(fl);
+
+	}
+
+}

Question01-StartProgram/src/main/java/Question1_9.java

@@ -0,0 +1,42 @@
+
+public class Question1_9 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		//変数宣言
+		boolean bl; // true or false
+		char ch; // 16ビットUnicode文字 u0000-uFFFF
+		byte by; // 8ビット整数 -128~127 (符号ビット＋2^7)
+		short sh; // 16ビット整数 -32,768~32,767 (符号ビット＋2^15)
+		int num; // 32ビット整数 -2,147,483,648~2,147,483,647 (符号ビット＋2^31)
+		long lo; // 64ビット整数 -9,223,372,036,854,775,808~9,223,372,036,854,775,807 (符号ビット＋2^63)
+		float fl; // 32ビット単精度浮動小数点数
+		double db; // 64ビット倍精度浮動小数点数
+		String str; // 文字列を扱うクラス
+		
+		//代入
+		bl = true;
+		ch = 'A';
+		by = 100;
+		sh = 10000;
+		num = 1000000000;
+		lo = 1000000000000000000L;
+		fl = 3.1415926F;
+		db = 1e2;
+		str = "DONE";
+		
+		//出力
+		System.out.println(bl);
+		System.out.println(ch);
+		System.out.println(by);
+		System.out.println(sh);
+		System.out.println(num);
+		System.out.println(lo);
+		System.out.println(fl);
+		System.out.println(db);
+		System.out.println(str);
+		
+	}
+
+}

Question02-Expressions/.classpath

@@ -0,0 +1,6 @@
+<?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>

Question02-Expressions/.gitignore

@@ -0,0 +1 @@
+/build/

Question02-Expressions/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question02-Expressions</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>

Question02-Expressions/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+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

Question02-Expressions/.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question02-Expressions/src/main/java/Question2_1.java

@@ -0,0 +1,23 @@
+
+public class Question2_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int sum, diff, mulch, div, rem;
+		
+		sum = 6 + 2;
+		diff = 6 - 2;
+		mulch = 6 * 2;
+		div = 6 / 2;
+		rem = 17 % 5;
+		
+		System.out.println("変数sum:" + sum);
+		System.out.println("変数diff:" + diff);
+		System.out.println("変数mulch:" + mulch);
+		System.out.println("変数div:" + div);
+		System.out.println("変数rem:" + rem);
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_2.java

@@ -0,0 +1,14 @@
+
+public class Question2_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String lastName = "太郎";
+		String firstName = "山田";
+		
+		System.out.println(firstName+lastName);
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_3.java

@@ -0,0 +1,15 @@
+
+public class Question2_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 10;
+		
+		num = num + 5;
+		
+		System.out.println(num);
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_4.java

@@ -0,0 +1,18 @@
+
+public class Question2_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		// error
+//		int sum;
+//		sum = 10 + 3.14;
+		
+		double sum;
+		sum = 10 + 3.14;
+		
+		System.out.println(sum);
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_5.java

@@ -0,0 +1,15 @@
+
+public class Question2_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int age = 20;
+		int diff = 5;
+		
+		System.out.println("山田さんは"+age+"歳です。");
+		System.out.println(diff+"年後には"+(age+diff)+"歳になります。");
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_6.java

@@ -0,0 +1,14 @@
+
+public class Question2_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int numerator = 9;
+		int denominator = 2;
+		
+		System.out.println( (float)numerator/(float)denominator );
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_7.java

@@ -0,0 +1,18 @@
+
+public class Question2_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num;
+		
+		// error
+//		num = 1.0;
+		
+		num = (int)1.0;
+		
+		System.out.println(num);
+
+	}
+
+}

Question02-Expressions/src/main/java/Question2_8.java

@@ -0,0 +1,17 @@
+
+public class Question2_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int money = 1000;
+		int price = 580;
+		float taxRate = 0.08F;
+		
+		money = money - (int)( price*(1.0+taxRate) );
+		
+		System.out.println("残金は"+money+"円です。");
+
+	}
+
+}

Question03-if/.classpath

@@ -0,0 +1,6 @@
+<?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>

Question03-if/.gitignore

@@ -0,0 +1 @@
+/build/

Question03-if/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question03-if</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>

Question03-if/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+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

Question03-if/.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question03-if/src/main/java/Question3_1.java

@@ -0,0 +1,15 @@
+
+public class Question3_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 100;
+		
+		if ( num == 100 ) {
+			System.out.println("条件に合致しました");
+		} 
+
+	}
+
+}

Question03-if/src/main/java/Question3_2.java

@@ -0,0 +1,17 @@
+
+public class Question3_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 65;
+		
+		if ( num >= 65 ) {
+			System.out.println("合格です");
+		} else {
+			System.out.println("不合格です");
+		}
+		
+	}
+
+}

Question03-if/src/main/java/Question3_3.java

@@ -0,0 +1,15 @@
+
+public class Question3_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 10;
+		
+		if ( (num % 2 == 0 ) && ( num % 5 == 0 ) ) {
+			System.out.println(num+"は"+2+"でも"+5+"でも割り切れます");
+		}
+
+	}
+
+}

Question03-if/src/main/java/Question3_4.java

@@ -0,0 +1,26 @@
+import java.util.Scanner;
+
+public class Question3_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		System.out.println("降水確率を入力してください。（数字のみ）");
+		
+		Scanner sc = new Scanner(System.in);
+		int num = Integer.parseInt(sc.nextLine());
+		sc.close();
+		
+		if ( (num<0) || (num>100) ) {
+			System.out.println("不正な値が入力されました");
+		} else if ( num >= 75 ) {
+			System.out.println("雨が降る確率が高いです");
+		} else if ( (num<75) && (num>=30) ) {
+			System.out.println("雨が降るかもしれないです");
+		} else {
+			System.out.println("雨はまず降らないでしょう");
+		}
+
+	}
+	
+}

Question04-while/.classpath

@@ -0,0 +1,6 @@
+<?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>

Question04-while/.gitignore

@@ -0,0 +1 @@
+/build/

Question04-while/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question04-while</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>

Question04-while/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+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

Question04-while/.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question06-for/.classpath

@@ -0,0 +1,6 @@
+<?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>

Question06-for/.gitignore

@@ -0,0 +1 @@
+/build/

Question06-for/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question06-for</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>

Question06-for/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+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

Question06-for/.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question06-for/src/main/java/Question6_1.java

@@ -0,0 +1,13 @@
+
+public class Question6_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		for ( int i = 0 ; i<100 ; i++ ) {
+			System.out.println(i);
+		}
+
+	}
+
+}

Question06-for/src/main/java/Question6_2.java

@@ -0,0 +1,20 @@
+
+public class Question6_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		StringBuilder square = new StringBuilder();
+		for ( int i=0 ; i<5 ; i++ ) {
+			square.append('\u25A0'); // ■ = \u25A0
+		}
+		System.out.println(square);
+		
+		// 1009
+		for ( int i=0 ; i<5 ; i++ ) {
+			System.out.print("\u25A0");
+		}
+
+	}
+
+}

Question06-for/src/main/java/Question6_3.java

@@ -0,0 +1,15 @@
+
+public class Question6_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		for ( int i = 0 ; i<=100 ; i++ ) {
+			if ( i%2 == 0 ) {
+				System.out.println(i);
+			}
+		}
+
+	}
+
+}

Question06-for/src/main/java/Question6_4.java

@@ -0,0 +1,24 @@
+
+public class Question6_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		for ( int i = 1 ; i<50 ; i++ ) {
+			
+			if ( (i%3 == 0) && (i%5 == 0) ) {
+				System.out.println("fizzbuzz");
+				continue;
+			} else if ( i%3==0 ) {
+				System.out.println("fizz");
+			} else if ( i%5==0 ) {
+				System.out.println("buzz");
+			} else {
+				System.out.println(i);
+			}
+			
+		}
+
+	}
+
+}

Question06-for/src/main/java/Question6_5.java

@@ -0,0 +1,22 @@
+
+public class Question6_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+			
+		int rand;
+		for ( int i = 0 ; i<10 ; i++) {
+			
+			rand = (int)( Math.random()*3 );
+			
+			if ( rand==2 ) {
+				// no output
+			} else {
+				System.out.println(rand);
+			}
+			
+		}
+
+	}
+
+}

Question06-for/src/main/java/Question6_6.java

@@ -0,0 +1,25 @@
+
+public class Question6_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		StringBuilder square = new StringBuilder();
+		for ( int i=0 ; i<5 ; i++ ) {
+			square.append('\u25A0'); // ■ = \u25A0
+		}
+		for ( int i=0 ; i<5 ; i++ ) {
+			System.out.println(square);
+		}
+		
+		// 1009
+		for (int j=0 ; j<5 ; j++ ) {
+			for ( int i=0 ; i<5 ; i++ ) {
+				System.out.print("\u25A0");
+			}
+			System.out.println("");
+		}
+		
+	}
+
+}

Question06-for/src/main/java/Question6_7.java

@@ -0,0 +1,31 @@
+
+public class Question6_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		StringBuilder sb = new StringBuilder();
+		for ( int i=1 ; i<=9 ; i++ ) {
+			for ( int j=1 ; j<=9 ; j++ ) {
+				if ( j>=2 ) {
+					sb.append(" "); // *2以降には空白を追加する
+				}
+				sb.append(i*j); // 計算結果を文字列として追加していく
+			}
+			System.out.println(sb);
+			sb.delete(0,sb.length()); // 追記した文字列をクリアする
+		}
+		
+		// 1009
+		for ( int i=1 ; i<=9 ; i++ ) {
+			for ( int j=1 ; j<=9 ; j++ ) {
+				System.out.print(i*j);
+				if ( j==9 ) { continue; }
+				System.out.print(" ");
+			}
+			System.out.println("");
+		}
+
+	}
+
+}