2026_1011_3FR_Java_Kyono/question-java
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鈴木　皓介
2026-10-21 17:58:59 +09:00
parent 60e3eeb77f
commit 6e804fff63
18 changed files with 362 additions and 0 deletions
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6
Question16-Exception/.classpath Normal file
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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>

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Question16-Exception/.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>Question16-Exception</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>

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Question16-Exception/.settings/org.eclipse.jdt.core.prefs Normal file
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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

4
Question16-Exception/.settings/org.eclipse.wst.common.project.facet.core.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
<installed facet="java" version="21"/>
</faceted-project>

6
Question16-Exception/build/classes/.gitignore vendored Normal file
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/Question16_1.class
/Question16_2.class
/EmptyException.class
/Question16_3.class
/Question16_4.class
/InvalidAgeException.class

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Question16-Exception/src/main/java/Question16_1.java Normal file
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public class Question16_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(Divide(10,2));
// System.out.println(Divide(10,0));
try {
System.out.println(Divide(10,0));
} catch (Exception e) {
System.out.println("0で割ることはできません");
System.exit(-1);
}
}
public static int Divide(int num1,int num2) {
return num1/num2;
}
}

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Question16-Exception/src/main/java/Question16_2.java Normal file
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public class Question16_2 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
System.out.println(x2Multiple("10"));
// System.out.println(x2Multiple("abc"));
try {
System.out.println(x2Multiple("abc"));
} catch(Exception e) {
System.out.println("数値に変換できません");
}
String test = "";
// System.out.println("");
try {
if (test.length()==0) {
throw new EmptyException("入力が空です");
}
} catch(EmptyException e) {
System.out.println("入力が空です");
}
}
public static int x2Multiple(String str) {
return 2*Integer.parseInt(str);
}
}
class EmptyException extends Exception {
public EmptyException(String msg) {
super(msg);
}
}

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Question16-Exception/src/main/java/Question16_3.java Normal file
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public class Question16_3 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
int[] nums = {10,20,30};
getValue(nums,1);
getValue(nums,5);
}
public static void getValue(int[] nums,int index) {
try {
System.out.println(nums[index]);
} catch(Exception e) {
System.out.println("指定した位置にデータがありません");
} finally {
System.out.println("処理を終了します");
}
}
}

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Question16-Exception/src/main/java/Question16_4.java Normal file
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public class Question16_4 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
age(20);
age(-5);
}
public static void age(int num) {
try {
if (num<0) {
throw new InvalidAgeException(num);
} else {
System.out.println("年齢は"+num+"です");
}
} catch(Exception e) {
}
}
}
class InvalidAgeException extends Exception {
public InvalidAgeException(int num) {
System.out.println(num+"は不正な年齢です");
}
}

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Question17-StackTrace/.classpath Normal file
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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>

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Question17-StackTrace/.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>Question17-StackTrace</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>

9
Question17-StackTrace/.settings/org.eclipse.jdt.core.prefs Normal file
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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

4
Question17-StackTrace/.settings/org.eclipse.wst.common.project.facet.core.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
<installed facet="java" version="21"/>
</faceted-project>

6
Question17-StackTrace/build/classes/.gitignore vendored Normal file
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/Question17_1.class
/Question17_2.class
/Product.class
/Question17_3.class
/nullNameException.class
/invalidAgeException.class

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Question17-StackTrace/src/main/java/Product.java Normal file
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public class Product {
private String name;
private int price;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public Product(String name,int price) {
this.name = name;
this.price = price;
}
}

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Question17-StackTrace/src/main/java/Question17_1.java Normal file
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public class Question17_1 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
try {
int[] points = {80,90,70};
printAverage(points);
int[] nullpoints = {};
printAverage(nullpoints);
} catch(Exception e) {
System.out.println("採点データがないため、平均点を計算できませんでした");
System.exit(-1);
}
}
public static void printAverage(int[] points) throws Exception {
System.out.println("平均点は"+getAverage(points)+"点です");
}
public static double getAverage(int[] points) throws Exception {
if (points.length==0) {
throw new Exception();
}
int sum = 0;
for (int i=0;i<points.length;i++) {
sum += points[i];
}
return divide(sum,points.length);
}
public static double divide(double num1, int num2) {
return num1/num2;
}
}

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Question17-StackTrace/src/main/java/Question17_2.java Normal file
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public class Question17_2 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
Product[] products = new Product[2];
Product product1 = new Product("りんご",150);
Product product2 = new Product("みかん",100);
products[0] = product1;
products[1] = product2;
confirmStock(products,"りんご");
confirmStock(products,"バナナ");
}
public static void confirmStock(Product[] products,String name) {
Product product = search(products,name);
try {
System.out.println(product.getName()+"の価格は"+product.getPrice()+"です");
} catch(Exception err) {
System.out.println(name+"は見つかりませんでした");
}
}
public static Product search(Product[] products,String name) {
Product product = null;
for (Product p:products) {
if(p.getName().equals(name)) {
product = p;
}
}
return product;
}
}

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Question17-StackTrace/src/main/java/Question17_3.java Normal file
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public class Question17_3 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
register("花子",20);
register("",20);
register("太郎",-1);
}
public static void register(String name,int age) {
try {
check(name,age);
System.out.println(name+"を登録しました");
}
catch (nullNameException e) {
System.out.println("名前を入力してください");
}
catch (invalidAgeException e) {
System.out.println("年齢は0以上を入力してください");
}
}
public static void check(String name,int age) throws invalidAgeException,nullNameException {
checkName(name);
if (age<0) {
throw new invalidAgeException();
}
}
public static void checkName(String name) throws nullNameException {
if (name.length()==0) {
throw new nullNameException();
}
}
}
class nullNameException extends Exception {
}
class invalidAgeException extends Exception {
}