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6
Question01-StartProgram/.classpath
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6
Question01-StartProgram/.classpath
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
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<classpathentry kind="src" path="src/main/java"/>
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<classpathentry kind="output" path="build/classes"/>
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</classpath>
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1
Question01-StartProgram/.gitignore
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1
Question01-StartProgram/.gitignore
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/build/
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23
Question01-StartProgram/.project
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Question01-StartProgram/.project
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Question01-StartProgram</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.wst.common.project.facet.core.builder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>
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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
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org.eclipse.jdt.core.compiler.compliance=21
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
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org.eclipse.jdt.core.compiler.release=enabled
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org.eclipse.jdt.core.compiler.source=21
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<?xml version="1.0" encoding="UTF-8"?>
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<faceted-project>
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<installed facet="java" version="21"/>
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</faceted-project>
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11
Question01-StartProgram/src/main/java/Question1_1.java
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11
Question01-StartProgram/src/main/java/Question1_1.java
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public class Question1_1 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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System.out.println("`Hello,world`");
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}
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}
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16
Question01-StartProgram/src/main/java/Question1_2.java
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Question01-StartProgram/src/main/java/Question1_2.java
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public class Question1_2 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//1行だけを無効化する方法
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/*
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複数行をまとめて無効化する方法
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*/
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System.out.println("テスト");
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}
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}
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16
Question01-StartProgram/src/main/java/Question1_3.java
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Question01-StartProgram/src/main/java/Question1_3.java
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public class Question1_3 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数strを宣言して代入する
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String str;
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str = "こんにちは";
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//出力
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System.out.println(str);
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}
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}
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15
Question01-StartProgram/src/main/java/Question1_4.java
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Question01-StartProgram/src/main/java/Question1_4.java
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public class Question1_4 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数numberを値10で初期化する
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int number = 10;
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//出力
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System.out.println(number);
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}
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}
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15
Question01-StartProgram/src/main/java/Question1_5.java
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Question01-StartProgram/src/main/java/Question1_5.java
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public class Question1_5 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数chを値Aで初期化する
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char ch = 'A';
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//出力
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System.out.println(ch);
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}
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}
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15
Question01-StartProgram/src/main/java/Question1_6.java
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Question01-StartProgram/src/main/java/Question1_6.java
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public class Question1_6 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数boを値trueで初期化する
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boolean bo = true;
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//出力
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System.out.println(bo);
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}
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}
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15
Question01-StartProgram/src/main/java/Question1_7.java
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Question01-StartProgram/src/main/java/Question1_7.java
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public class Question1_7 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数loを値1000000000000で初期化する
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long lo = 1000000000000L;
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//出力
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System.out.println(lo);
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}
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}
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15
Question01-StartProgram/src/main/java/Question1_8.java
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Question01-StartProgram/src/main/java/Question1_8.java
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public class Question1_8 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数flを値3.14で初期化する
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float fl = 3.14F;
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//出力
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System.out.println(fl);
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}
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}
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42
Question01-StartProgram/src/main/java/Question1_9.java
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42
Question01-StartProgram/src/main/java/Question1_9.java
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public class Question1_9 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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//変数宣言
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boolean bl; // true or false
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char ch; // 16ビットUnicode文字 u0000-uFFFF
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byte by; // 8ビット整数 -128~127 (符号ビット+2^7)
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short sh; // 16ビット整数 -32,768~32,767 (符号ビット+2^15)
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int num; // 32ビット整数 -2,147,483,648~2,147,483,647 (符号ビット+2^31)
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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)
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float fl; // 32ビット単精度浮動小数点数
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double db; // 64ビット倍精度浮動小数点数
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String str; // 文字列を扱うクラス
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//代入
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bl = true;
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ch = 'A';
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by = 100;
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sh = 10000;
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num = 1000000000;
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lo = 1000000000000000000L;
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fl = 3.1415926F;
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db = 1e2;
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str = "DONE";
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//出力
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System.out.println(bl);
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System.out.println(ch);
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System.out.println(by);
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System.out.println(sh);
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System.out.println(num);
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System.out.println(lo);
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System.out.println(fl);
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System.out.println(db);
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System.out.println(str);
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}
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}
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