完了済

Question04-while/src/main/java/Question4_1.java

@@ -0,0 +1,15 @@
+
+public class Question4_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 0;
+		while ( num!=5 ) {
+			num = (int)( Math.random()*10 );
+			System.out.println(num);
+		}
+
+	}
+
+}

Question04-while/src/main/java/Question4_2.java

@@ -0,0 +1,15 @@
+
+public class Question4_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 2;
+		while ( num<=1000 ) {
+			num = num*2;
+		}
+		System.out.println(num);
+
+	}
+
+}

Question04-while/src/main/java/Question4_3.java

@@ -0,0 +1,18 @@
+
+public class Question4_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 0;
+		while ( true ) {
+			num = (int)( Math.random()*10 );
+			System.out.println(num);
+			if ( num==5 ) {
+				break;
+			}
+		}
+		
+	}
+
+}

Question04-while/src/main/java/Question4_4.java

@@ -0,0 +1,32 @@
+import java.util.Scanner;
+
+public class Question4_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int map = 50;
+		int progress = 0;
+		
+		System.out.println("===== START =====");
+		
+		while ( true ) {
+			
+			System.out.println("Enterキーを押してください。さいころをふります。");
+			Scanner sc = new Scanner(System.in);
+			String str = sc.nextLine();
+			
+			int num = (int)( Math.random()*6+1 );
+			System.out.println(num+"の目が出ました。");
+			progress = progress + num;
+			
+			if ( map-progress<=0 ) { break; }
+			System.out.println("残りのマスは"+(map-progress)+"マスです。");
+			
+		}
+		
+		System.out.println("===== GOAL =====");
+
+	}
+
+}

Question04-while/src/main/java/Question4_5.java

@@ -0,0 +1,67 @@
+import java.util.Scanner;
+
+public class Question4_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		boolean winflag = false;
+		
+		while ( !winflag ) {
+			
+			System.out.println("じゃんけんを行います。");
+			System.out.println("あなたの出す手を入力してください。");
+			System.out.println("0:グー, 1:チョキ, 2:パー");
+			
+			Scanner sc = new Scanner(System.in);
+			int playerHand = sc.nextInt();
+			switch ( playerHand ) {
+			case 0 :
+				System.out.println("あなたはグーを出しました。");
+				break;
+			case 1 :
+				System.out.println("あなたはチョキを出しました。");
+				break;
+			case 2 :
+				System.out.println("あなたはパーを出しました。");
+				break;
+//			default : 
+//				System.out.println("不正な入力です。");
+//				System.exit(0);
+			}
+			
+			int npcHand = (int)( Math.random()*3 );
+			switch ( npcHand ) {
+			case 0 :
+				System.out.println("相手はグーを出しました。");
+				break;
+			case 1 :
+				System.out.println("相手はチョキを出しました。");
+				break;
+			case 2 :
+				System.out.println("相手はパーを出しました。");
+				break;
+			}
+			
+			if ( playerHand == npcHand ) {
+				System.out.println("引き分けました。");
+				System.out.println("");
+				continue;
+			}
+			
+			if ( ((playerHand==0)&&(npcHand==2)) || 
+				 ((playerHand==1)&&(npcHand==0)) || 
+				 ((playerHand==2)&&(npcHand==1)) ) {
+				System.out.println("負けました。");
+				System.out.println("");
+				continue;
+			} else {
+				System.out.println("勝ちました。");
+				winflag = true;
+			}
+			
+		}
+		
+	}
+
+}

Question05-switch/.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>

Question05-switch/.gitignore

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

Question05-switch/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question05-switch</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>

Question05-switch/.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

Question05-switch/.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>

Question05-switch/src/main/java/Question5_1.java

@@ -0,0 +1,35 @@
+
+public class Question5_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("今日の運勢を占います。");
+
+		int num = (int)( Math.random()*5+1 );
+//		System.out.println(num);
+		
+		switch (num) {
+			case 0 :
+				System.out.println("あなたの運勢は「大吉」です。");
+				break;
+			case 1 :
+				System.out.println("あなたの運勢は「吉」です。");
+				break;
+			case 2 :
+				System.out.println("あなたの運勢は「中吉」です。");
+				break;
+			case 3 :
+				System.out.println("あなたの運勢は「小吉」です。");
+				break;
+			case 4 :
+				System.out.println("あなたの運勢は「末吉」です。");
+				break;
+			case 5 :
+				System.out.println("あなたの運勢は「凶」です。");
+				break;
+		}
+		
+	}
+
+}

Question05-switch/src/main/java/Question5_2.java

@@ -0,0 +1,47 @@
+import java.util.Scanner;
+
+public class Question5_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		
+		int num1, num2;
+		String choice;
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.println("1つ目の数値を入力してください");
+		num1 = sc.nextInt();
+		
+		System.out.println("２つ目の数値を入力してください");
+		num2 = sc.nextInt();
+		
+		System.out.println("計算方法を選択してください");
+		choice = sc.next();
+		
+		sc.close();
+		
+		switch (choice) {
+			case "+" :
+				System.out.println(num1+num2);
+				break;
+			case "-" :
+				System.out.println(num1-num2);
+				break;
+			case "*" :
+				System.out.println(num1*num2);
+				break;
+			case "/" :
+				System.out.println((double)num1/(double)num2);
+				break;
+			case "%" :
+				System.out.println(num1%num2);
+				break;
+			default :
+				System.out.println("計算に失敗しました");
+				break;
+		}
+
+	}
+
+}

Question05-switch/src/main/java/Question5_3.java

@@ -0,0 +1,67 @@
+import java.util.Scanner;
+
+public class Question5_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		System.out.println("=========================================\n"
+				+ "               ゲームの説明\n"
+				+ "=========================================\n"
+				+ "これからハイ＆ローゲームを行います。\n"
+				+ "ハイ＆ローゲームは、あなたのカードがディーラーのカードより大きいか小さいかを予想するゲームです。\n"
+				+ "\n"
+				+ "=========================================\n"
+				+ "               ゲーム開始\n"
+				+ "=========================================");
+		
+		int dealerCard = (int)( Math.random()*12+1 );
+//		dealerCard = ;
+		System.out.println("ディーラーのカードは"+dealerCard+"です");
+		
+		int myCard = (int)( Math.random()*12+1 );
+//		myCard = ;
+		
+		System.out.println("");
+		
+		System.out.println("あなたのカードがディーラのカードより大きい場合は H 小さい場合は L を入力してください。");
+		System.out.println("※ カードの数値が同じ場合はあなたの勝ちです。");
+		
+		String jedgement;
+		Scanner sc = new Scanner(System.in);
+		jedgement = sc.next();
+		sc.close();
+		
+		System.out.println("あなたのカードは"+myCard+"です");
+		
+		System.out.println("");
+		
+		System.out.println("=========================================\n"
+				+ "               勝敗判定\n"
+				+ "=========================================");
+		
+		switch (jedgement) {
+			case "H" : 
+				if (myCard>=dealerCard) {
+					System.out.println("あなたの勝ちです");
+					break;
+				} else {
+					System.out.println("あなたの負けです");
+					break;
+				}
+			case "L" :
+				if (myCard<=dealerCard) {
+					System.out.println("あなたの勝ちです");
+					break;
+				} else {
+					System.out.println("あなたの負けです");
+					break;
+				}
+			default :
+				System.out.println("不正な値が入力されました");
+				break;
+		}
+
+	}
+
+}

Question07-Array/.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>

Question07-Array/.gitignore

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

Question07-Array/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question07-Array</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>

Question07-Array/.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

Question07-Array/.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>

Question07-Array/src/main/java/Question7_1.java

@@ -0,0 +1,18 @@
+
+public class Question7_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int nums[] = new int[5];
+		nums[0] = 1;
+		nums[1] = 3;
+		nums[2] = 5;
+		nums[3] = 7;
+		nums[4] = 9;
+		
+		System.out.println(nums[1]);
+
+	}
+
+}

Question07-Array/src/main/java/Question7_10.java

@@ -0,0 +1,21 @@
+
+public class Question7_10 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int[] nums = new int[100];
+		
+		// ArrayIndexOutOfBoundException
+//		for ( int i=1 ; i<=100 ; i++ ) {
+//			nums[i] = i+1;
+//		}
+		
+		for ( int i=0 ; i<100 ; i++ ) {
+			nums[i] = i+1;
+			System.out.println(nums[i]);
+		}
+
+	}
+
+}

Question07-Array/src/main/java/Question7_2.java

@@ -0,0 +1,13 @@
+
+public class Question7_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int[] nums = {1 ,10, 100};
+		
+		System.out.println(nums[0]+nums[2]);
+
+	}
+
+}

Question07-Array/src/main/java/Question7_3.java

@@ -0,0 +1,15 @@
+
+public class Question7_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String[] str = {"森","山","沼","島","平地"};
+		
+		for ( int i=0 ; i<str.length ; i++ ) {
+			System.out.println(str[i]);
+		}
+
+	}
+
+}

Question07-Array/src/main/java/Question7_4.java

@@ -0,0 +1,16 @@
+
+public class Question7_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int nums[] = new int[1000];
+		
+		for ( int i=1 ; i<=nums.length ; i++ ) {
+			nums[i-1] = i;
+			System.out.println(nums[i-1]);
+		}
+
+	}
+
+}

Question07-Array/src/main/java/Question7_5.java

@@ -0,0 +1,14 @@
+
+public class Question7_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String[] str = {"森","山","沼","島","平地"};
+		
+		int num = (int)( Math.random()*5 );
+		System.out.println(str[num]);
+		
+	}
+
+}

Question07-Array/src/main/java/Question7_6.java

@@ -0,0 +1,14 @@
+
+public class Question7_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String[] str = {"森","山","沼","島","平地"};
+		for ( int i=str.length ; i>0 ; i-- ) {
+			System.out.println(str[i-1]);
+		}
+
+	}
+
+}

Question07-Array/src/main/java/Question7_7.java

@@ -0,0 +1,19 @@
+
+public class Question7_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String[][] table = {
+				{"国語","社会","国語","理科","社会"},
+				{"英語","数学","英語","数学","国語"},
+				{"理科","国語","理科","国語","理科"},
+				{"社会","社会","数学","社会","数学"},
+				{"数学","英語","英語","理科","英語"}
+		};
+		
+		System.out.println(table[1][4]);
+
+	}
+
+}

Question07-Array/src/main/java/Question7_8.java

@@ -0,0 +1,20 @@
+
+public class Question7_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int[][] array = {
+				{1,3,5,7},
+				{11,13,17,19,23,29}
+		};
+		
+		for ( int i=0 ; i<array.length ; i++) {
+			for ( int j=0 ; j<array[i].length ; j++ ) {
+				System.out.println(array[i][j]);
+			}
+		}
+
+	}
+
+}

Question07-Array/src/main/java/Question7_9.java

@@ -0,0 +1,24 @@
+
+public class Question7_9 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int[][] array = {
+				{1,3,5,7},
+				{11,13,17,19,23,29}
+		};
+		
+		int count=0;
+		double sum=0;
+		for ( int i=0 ; i<array.length ; i++) {
+			for ( int j=0 ; j<array[i].length ; j++ ) {
+				sum += array[i][j];
+				count++;
+			}
+		}
+		System.out.println(sum/count);
+
+	}
+
+}

Question08-Method/.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>

Question08-Method/.gitignore

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

Question08-Method/.project

@@ -0,0 +1,23 @@
+<?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

@@ -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

Question08-Method/.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>

Question08-Method/src/main/java/Question8_1.java

@@ -0,0 +1,15 @@
+
+public class Question8_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+
+		hello()	;
+		
+	}
+	
+	public static void hello() {
+		System.out.println("こんにちは");
+	}
+
+}

Question08-Method/src/main/java/Question8_2.java

@@ -0,0 +1,15 @@
+
+public class Question8_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 name ) {
+		System.out.println("こんにちは。"+name+"です。");
+	}
+
+}

Question08-Method/src/main/java/Question8_3.java

@@ -0,0 +1,18 @@
+
+public class Question8_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String str;
+		str = hello();
+		
+		System.out.println(str);
+
+	}
+	
+	public static String hello() {
+		return "こんにちは";
+	}
+
+}

Question08-Method/src/main/java/Question8_4.java

@@ -0,0 +1,20 @@
+
+public class Question8_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int sum;
+		int x = 1;
+		int y = 2;
+		
+		sum = sum(x,y);
+		System.out.println(sum);
+
+	}
+	
+	public static int sum( int x, int y ) {
+		return x+y;
+	}
+
+}

Question08-Method/src/main/java/Question8_5.java

@@ -0,0 +1,27 @@
+import java.util.Scanner;
+
+public class Question8_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num1, num2;
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.println("1つ目の数値を入力してください");
+		num1 = sc.nextInt();
+		
+		System.out.println("2つ目の数値を入力してください");
+		num2 = sc.nextInt();
+		
+		sc.close();
+		
+		System.out.println(sum(num1,num2));
+
+	}
+	
+	public static int sum( int x, int y ) {
+		return x+y;
+	}
+
+}

Question08-Method/src/main/java/Question8_6.java

@@ -0,0 +1,24 @@
+
+public class Question8_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int[] array = addArray(10,20);
+		
+		System.out.println(array[0]);
+		System.out.println(array[1]);
+		
+	}
+	
+	public static int[] addArray( int x, int y ) {
+		
+		int array[] = new int[2];
+		array[0] = x;
+		array[1] = y;
+		
+		return array;
+		
+	}
+
+}

Question08-Method/src/main/java/Question8_7.java

@@ -0,0 +1,30 @@
+
+public class Question8_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		printValue("こんにちは");
+		printValue(100);
+		printValue(10.1F);
+		printValue('A');
+
+	}
+	
+	public static void printValue( String arg ) {
+		System.out.println("引数は"+arg+"です");
+	}
+	
+	public static void printValue( int arg ) {
+		System.out.println("引数は"+arg+"です");
+	}
+
+	public static void printValue( float arg ) {
+		System.out.println("引数は"+arg+"です");
+	}
+
+	public static void printValue( char arg ) {
+		System.out.println("引数は"+arg+"です");
+	}
+
+}

Question08-Method/src/main/java/Question8_8.java

@@ -0,0 +1,25 @@
+
+public class Question8_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		System.out.println(sum(1,2));
+		System.out.println(sum(1,2,3));
+		System.out.println(sum(1,2,3,4));
+
+	}
+	
+	public static int sum( int x1, int x2 ) {
+		return x1+x2;
+	}
+	
+	public static int sum( int x1, int x2, int x3 ) {
+		return x1+x2+x3;
+	}
+	
+	public static int sum( int x1, int x2, int x3, int x4 ) {
+		return x1+x2+x3+x4;
+	}
+	
+}

Question10-InstanceAndClass/.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>

Question10-InstanceAndClass/.gitignore

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

Question10-InstanceAndClass/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question10-InstanceAndClass</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>

Question10-InstanceAndClass/.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

Question10-InstanceAndClass/.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>

Question10-InstanceAndClass/src/main/java/Calculation.java

@@ -0,0 +1,10 @@
+
+public class Calculation {
+	
+	int baseNum;
+	
+	public void add(int num) {
+		this.baseNum += num;
+	}
+	
+}

Question10-InstanceAndClass/src/main/java/Car.java

@@ -0,0 +1,19 @@
+
+public class Car {
+	
+	String color;
+	int gasoline;
+	
+	public int run() {
+		
+		this.gasoline--;
+		
+		if (this.gasoline>=0) {
+			return (int)(Math.random()*15+1) ;
+		} else {
+			return -1;
+		}
+		
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_1.java

@@ -0,0 +1,15 @@
+
+public class Question10_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		User user = new User();
+		user.id = 1000;
+		user.name = "山田太郎";
+		System.out.println(user.id);
+		System.out.println(user.name);
+
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_2.java

@@ -0,0 +1,14 @@
+
+public class Question10_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		User user = new User();
+		user.id = 2000;
+		user.name = "佐藤二郎";
+		user.printProfile();
+		
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_3.java

@@ -0,0 +1,20 @@
+
+public class Question10_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Student student = new Student();
+		student.studentId = 10;
+		student.name = "田中二郎";
+		student.mail = "test@mail.com";
+		student.password = "pass";
+		
+		System.out.println(student.studentId);
+		System.out.println(student.name);
+		System.out.println(student.mail);
+		System.out.println(student.password);
+
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_4.java

@@ -0,0 +1,15 @@
+
+public class Question10_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Calculation calculation = new Calculation();
+		calculation.baseNum = 100;
+		calculation.add(100);
+		
+		System.out.println(calculation.baseNum);
+		
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_5.java

@@ -0,0 +1,16 @@
+
+public class Question10_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Car car = new Car();
+		car.color = "赤";
+		car.gasoline = 50;
+		int progress = car.run();
+		System.out.println(car.color+"色の車は"+progress+"進みました");
+		System.out.println(car.gasoline);
+		
+	}
+	
+}

Question10-InstanceAndClass/src/main/java/Question10_6.java

@@ -0,0 +1,28 @@
+
+public class Question10_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Car car = new Car();
+		car.color = "赤";
+		car.gasoline = 50;
+		
+		int distance = 300;
+		int nRuns = 0;
+		while (true) {
+			distance -= car.run();
+			nRuns++;
+			if (car.gasoline<0) {
+				System.out.println(car.color+"色の車は、目的地に到達できませんでした。");
+				break;
+			}
+			if (distance<=0) {
+				System.out.println(car.color+"色の車は、目的地にまで"+nRuns+"時間かかりました。残りのガソリンは、"+car.gasoline+"リットルです。");
+				break;
+			}
+		}
+		
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_7.java

@@ -0,0 +1,33 @@
+
+public class Question10_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		User[] userList = new User[3];
+		
+		User user1 = new User();
+		User user2 = new User();
+		User user3 = new User();
+		
+		user1.id = 1;
+		user1.name = "一郎";
+		user2.id = 2;
+		user2.name = "二郎";
+		user3.id = 3;
+		user3.name = "三郎";
+		
+		userList[0] = user1;
+		userList[1] = user2;
+		userList[2] = user3;
+		
+//		for (int i=0;i<userList.length;i++) {
+//			userList[i].printProfile();
+//		}
+		for (User user:userList) {
+			user.printProfile();
+		}
+		
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Question10_8.java

@@ -0,0 +1,44 @@
+
+public class Question10_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Car[] carList = new Car[3];
+		
+		Car car1 = new Car();
+		car1.color = "赤";
+		car1.gasoline = 50;
+		
+		Car car2 = new Car();
+		car2.color = "青";
+		car2.gasoline = 60;
+		
+		Car car3 = new Car();
+		car3.color = "黄";
+		car3.gasoline = 70;
+		
+		carList[0] = car1;
+		carList[1] = car2;
+		carList[2] = car3;
+		
+		for (Car car:carList) {
+			int distance = 300;
+			int nRuns = 0;
+			while (true) {
+				distance -= car.run();
+				nRuns++;
+				if (car.gasoline<0) {
+					System.out.println(car.color+"色の車は、目的地に到達できませんでした。");
+					break;
+				}
+				if (distance<=0) {
+					System.out.println(car.color+"色の車は、目的地にまで"+nRuns+"時間かかりました。残りのガソリンは、"+car.gasoline+"リットルです。");
+					break;
+				}
+			}
+		}
+		
+	}
+
+}

Question10-InstanceAndClass/src/main/java/Student.java

@@ -0,0 +1,7 @@
+
+public class Student {
+	
+	int studentId;
+	String name, mail, password;
+	
+}

Question10-InstanceAndClass/src/main/java/User.java

@@ -0,0 +1,11 @@
+
+public class User {
+	
+	int id;
+	String name;
+	
+	public void printProfile() {
+		System.out.println("ID"+this.id+":"+this.name);
+	}
+
+}

Question11-ConstructorAndStatic/.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>

Question11-ConstructorAndStatic/.gitignore

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

Question11-ConstructorAndStatic/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question11-ConstructorAndStatic</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>

Question11-ConstructorAndStatic/.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

Question11-ConstructorAndStatic/.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>

Question11-ConstructorAndStatic/src/main/java/Atm.java

@@ -0,0 +1,20 @@
+
+public class Atm {
+	
+	int credit;
+	
+	public Atm () {
+		this.credit = 100000;
+	}
+	
+	public void withdraw( Wallet wallet , int money ) {
+		if ( this.credit < money ) {
+			System.out.println("預金残高不足です。現金の引き出しに失敗しました。");
+		} else {
+			this.credit = this.credit - money;
+			wallet.money = wallet.money + money;
+			System.out.println("ATMの残り残高は"+this.credit+"です");
+		}
+	}
+	
+}

Question11-ConstructorAndStatic/src/main/java/Cat.java

@@ -0,0 +1,14 @@
+
+public class Cat {
+	
+	String name;
+	
+	public Cat() {
+		this.name = "タマ";
+	}
+	
+	public Cat( String name ) {
+		this.name = name;
+	}
+	
+}

Question11-ConstructorAndStatic/src/main/java/Jam.java

@@ -0,0 +1,10 @@
+
+public class Jam {
+	
+	String material;
+	
+	public Jam( String jam ) {
+		this.material = jam;
+	}
+	
+}

Question11-ConstructorAndStatic/src/main/java/Question11_1.java

@@ -0,0 +1,20 @@
+
+public class Question11_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Wallet wallet = new Wallet();
+		wallet.money = 10000;
+		
+		User user = new User();
+		user.name = "太郎";
+		user.wallet = wallet;
+		
+		user.confirmWallet();
+		user.useMoney(1000);
+		user.confirmWallet();
+		
+	}
+
+}

Question11-ConstructorAndStatic/src/main/java/Question11_2.java

@@ -0,0 +1,20 @@
+
+public class Question11_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Wallet wallet = new Wallet();
+		wallet.money = 10000;
+		
+		Atm atm = new Atm();
+		
+		atm.withdraw(wallet,100000);
+		System.out.println(wallet.money);
+		
+		atm.withdraw(wallet,100000);
+		System.out.println(wallet.money);
+		
+	}
+
+}

Question11-ConstructorAndStatic/src/main/java/Question11_3.java

@@ -0,0 +1,15 @@
+
+public class Question11_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Cat cat1 = new Cat();
+		System.out.println(cat1.name);
+		
+		Cat cat2 = new Cat("ミケ");
+		System.out.println(cat2.name);
+		
+	}
+
+}

Question11-ConstructorAndStatic/src/main/java/Question11_4.java

@@ -0,0 +1,17 @@
+
+public class Question11_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Student student = new Student();
+		student.name = "太郎";
+		student.group = "A";
+		student.teacher = "山田";
+		
+		student.studentProfile();
+		student.groupProfile();
+		
+	}
+
+}

Question11-ConstructorAndStatic/src/main/java/Question11_5.java

@@ -0,0 +1,14 @@
+
+public class Question11_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Jam jam = new Jam("ブルーベリー");
+		Toast toast = new Toast(jam);
+		
+		toast.taste();
+		
+	}
+
+}

Question11-ConstructorAndStatic/src/main/java/Student.java

@@ -0,0 +1,16 @@
+
+public class Student {
+	
+	String name;
+	static String group;
+	static String teacher;
+	
+	public void studentProfile() {
+		System.out.println(this.name+"は"+this.group+"教室の生徒です。");
+	}
+	
+	public void groupProfile() {
+		System.out.println(this.group+"教室の担任は"+this.teacher+"先生です。");
+	}
+	
+}

Question11-ConstructorAndStatic/src/main/java/Toast.java

@@ -0,0 +1,14 @@
+
+public class Toast {
+	
+	Jam jam;
+	
+	public Toast(Jam jam) {
+		this.jam = jam; 
+	}
+	
+	public void taste() {
+		System.out.println(jam.material+"味のトーストです。");
+	}
+	
+}

Question11-ConstructorAndStatic/src/main/java/User.java

@@ -0,0 +1,16 @@
+
+public class User {
+	
+	String name;
+	Wallet wallet;
+	
+	public void useMoney( int money ) {
+		this.wallet.money = this.wallet.money - money;
+		System.out.println(this.name+"は財布の中のお金を"+money+"円使用しました");
+	}
+	
+	public void confirmWallet() {
+		System.out.println(this.name+"の財布の中の残額は"+this.wallet.money+"円です");
+	}
+	
+}

Question11-ConstructorAndStatic/src/main/java/Wallet.java

@@ -0,0 +1,6 @@
+
+public class Wallet {
+	
+	int money;
+	
+}

Question12-Encapsulation/.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>

Question12-Encapsulation/.gitignore

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

Question12-Encapsulation/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question12-Encapsulation</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>

Question12-Encapsulation/.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

Question12-Encapsulation/.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>

Question12-Encapsulation/src/main/java/Item.java

@@ -0,0 +1,14 @@
+
+public class Item {
+	
+	private String item;
+	
+	public Item() {
+		this.item = "アイテムA";
+	}
+	
+	public String getItem() {
+		return item;
+	}
+	
+}

Question12-Encapsulation/src/main/java/Question12_1.java

@@ -0,0 +1,21 @@
+
+public class Question12_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		User user = new User();
+		
+		user.setId(1000);
+		user.setName("リゾーム太郎");
+		user.setMail("rhizome@hogehoge.com");
+		user.setPass("12345");
+		
+		System.out.println("ID　:"+user.getId());
+		System.out.println("名前　："+user.getName());
+		System.out.println("メールアドレス　："+user.getMail());
+		System.out.println("パスワード　："+user.getPass());
+		
+	}
+
+}

Question12-Encapsulation/src/main/java/Question12_2.java

@@ -0,0 +1,12 @@
+
+public class Question12_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		Item item = new Item();
+		System.out.println(item.getItem());
+		
+	}
+
+}

Question12-Encapsulation/src/main/java/User.java

@@ -0,0 +1,34 @@
+
+public class User {
+	
+	private int Id;
+	private String name;
+	private String mail;
+	private String pass;
+	
+	public int getId() {
+		return Id;
+	}
+	public void setId(int id) {
+		Id = id;
+	}
+	public String getName() {
+		return name;
+	}
+	public void setName(String name) {
+		this.name = name;
+	}
+	public String getMail() {
+		return mail;
+	}
+	public void setMail(String mail) {
+		this.mail = mail;
+	}
+	public String getPass() {
+		return pass;
+	}
+	public void setPass(String pass) {
+		this.pass = pass;
+	}
+	
+}