Добавил примеры для дебага

.gitignore

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+*.class
+*.log
+*.ctxt
+.mtj.tmp/
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+hs_err_pid*
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+.idea/**/contentModel.xml
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+.idea/**/gradle.xml
+.idea/**/libraries
+cmake-build-*/
+.idea/**/mongoSettings.xml
+*.iws
+out/
+.idea_modules/
+atlassian-ide-plugin.xml
+.idea/replstate.xml
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+.idea/httpRequests
+.idea/caches/build_file_checksums.ser
+*~
+.fuse_hidden*
+.directory
+.Trash-*
+.nfs*
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+*.stackdump
+[Dd]esktop.ini
+$RECYCLE.BIN/
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+*.lnk
+.DS_Store
+.AppleDouble
+.LSOverride
+Icon
+._*
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>dev.struchkov</groupId>
+    <artifactId>debugger</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>dev.struchkov.haiti</groupId>
+            <artifactId>haiti-utils</artifactId>
+            <version>0.0.3</version>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/dev/struchkov/example/debugger/box/SurpriseBox.java

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+package dev.struchkov.example.debugger.box;
+
+public class SurpriseBox {
+
+    public static void surpriseOne(int i) {
+        if (i == 896) {
+            throw new SurpriseException("Сюрприииииииз");
+        }
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/box/SurpriseException.java

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+package dev.struchkov.example.debugger.box;
+
+public class SurpriseException extends RuntimeException {
+
+    public SurpriseException(String message) {
+        super(message);
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/five/Calculator.java

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+package dev.struchkov.example.debugger.five;
+
+public class Calculator {
+
+    public boolean process(long a, long b) {
+        return Math.max(a, b) % 2 == 0;
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/five/FiveExample.java

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+package dev.struchkov.example.debugger.five;
+
+public class FiveExample {
+
+    public static void main(String[] args) {
+        final Calculator calculator = new Calculator();
+        System.out.println();
+        System.out.println(calculator.process(10L, 2L));
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/four/Entity.java

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+package dev.struchkov.example.debugger.four;
+
+public class Entity {
+
+    private String field;
+
+    public Entity(String field) {
+        this.field = field;
+    }
+
+    public String getField() {
+        return field;
+    }
+
+    public void setField(String field) {
+        this.field = field;
+    }
+
+    @Override
+    public String toString() {
+        return field;
+    }
+}

src/main/java/dev/struchkov/example/debugger/four/ExampleFour.java

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+package dev.struchkov.example.debugger.four;
+
+public class ExampleFour {
+
+    public static void main(String[] args) {
+        final ThirdService thirdService = new ThirdService();
+        final SecondService secondService = new SecondService(thirdService);
+        final FirstService firstService = new FirstService(secondService);
+
+        final Entity entity = new Entity("Dasha");
+        firstService.processing(entity);
+
+        System.out.println();
+        System.out.println(entity);
+        System.out.println();
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/four/FirstService.java

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+package dev.struchkov.example.debugger.four;
+
+import dev.struchkov.example.debugger.box.SurpriseException;
+
+public class FirstService {
+
+    private final SecondService secondService;
+
+    public FirstService(SecondService secondService) {
+        this.secondService = secondService;
+    }
+
+    public void processing(Entity entity) {
+        valid(entity.getField());
+        secondService.processing(entity);
+        final String newField = entity.getField();
+        entity.setField("\033[31;1;4m" + newField + "!\033[0m");
+    }
+
+    private void valid(String field) {
+        if (field.equals("Masha")) {
+            throw new SurpriseException("Ошибочка вышла");
+        }
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/four/SecondService.java

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+package dev.struchkov.example.debugger.four;
+
+public class SecondService {
+
+    private final ThirdService thirdService;
+
+    public SecondService(ThirdService thirdService) {
+        this.thirdService = thirdService;
+    }
+
+    public void processing(Entity entity) {
+        thirdService.processing(entity);
+        final String field = entity.getField();
+        entity.setField("Nice to " + field);
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/four/ThirdService.java

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+package dev.struchkov.example.debugger.four;
+
+public class ThirdService {
+
+    public void processing(Entity entity) {
+        entity.setField("meet you " + entity.getField());
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/one/ExampleOne.java

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+package dev.struchkov.example.debugger.one;
+
+public class ExampleOne {
+
+    public static void main(String[] args) {
+        final PersonService personService = new PersonService();
+
+        demoOne(personService);
+//        demoTwo(personService);
+    }
+
+    private static void demoOne(PersonService personService) {
+        personService.showAllPerson();
+        personService.deleteAllByLastName("Иванов");
+        personService.showAllPerson();
+    }
+
+    private static void demoTwo(PersonService personService) {
+        personService.showAllPerson();
+        personService.correctDeleteAllByLastName("Скворцова");
+        personService.showAllPerson();
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/one/Person.java

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+package dev.struchkov.example.debugger.one;
+
+public class Person {
+
+    private Long id;
+    private String firstName;
+    private String lastName;
+
+    public Person(Long id, String firstName, String lastName) {
+        this.id = id;
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public String toString() {
+        return "Person{" +
+                "id=" + id +
+                ", firstName='" + firstName + '\'' +
+                ", lastName='" + lastName + '\'' +
+                '}';
+    }
+}

src/main/java/dev/struchkov/example/debugger/one/PersonService.java

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+package dev.struchkov.example.debugger.one;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+public class PersonService {
+
+    private final Map<Long, Person> names = new HashMap<>();
+
+    public PersonService() {
+        init();
+    }
+
+    public void deleteAllByLastName(String lastName) {
+        for (Person person : names.values()) {
+            if (lastName.equals(person.getLastName())) {
+                names.remove(person.getId());
+            }
+        }
+    }
+
+    public void showAllPerson() {
+        System.out.println("\nПользователи системы:");
+        names.values().forEach(System.out::println);
+        System.out.println();
+    }
+
+    public void init() {
+        names.putAll(
+                Map.of(
+                        1L, new Person(1L, "Алексей", "Кашемиров"),
+                        2L, new Person(2L, "Никита", "Иванов"),
+                        3L, new Person(3L, "Иван", "Сизов"),
+                        4L, new Person(4L, "Михаил", "Иванов"),
+                        5L, new Person(5L, "Ксения", "Cкорцова")
+                )
+        );
+    }
+
+    public void correctDeleteAllByLastName(String lastName) {
+        final Iterator<Person> iterator = names.values().iterator();
+        while (iterator.hasNext()) {
+            final Person person = iterator.next();
+            if (lastName.equals(person.getLastName())) {
+                iterator.remove();
+            }
+        }
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/one/package-info.java

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+/**
+ * <p>Первый пакет, который вводит в общую суть дебага</p>
+ * <p></p>
+ * <p>Пример строится на исключении ConcurrentModificationException при попытке удаления сщуности из Map во время ее обхода.</p>
+ * <p></p>
+ * <h2><b>Что тут можно показать:</b></h2>
+ * <ol>
+ *     <li>Как поставить брекпойнт. На примере PersonService</li>
+ *     <li></li>
+ * </ol>
+ * <h2>Сценарий</h2>
+ * <p>Первым делом просто запускаем ExampleOne. Видим, что происходит исключение. Рассказываем из-за чего оно произошло. И напоминаем что такое stack trace и что по нему можно навигироваться.</p>
+ * <p>Далее ставим точку останова в PersonService#deleteAllByLastName. В этот момент мы показываем, как ставиться точка останова.</p>
+ */
+package dev.struchkov.example.debugger.one;

src/main/java/dev/struchkov/example/debugger/package-info.java

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+/**
+ * <h2>Проект для демонстрации возможностей дебага IDE</h2>
+ * <p>Проект разделен на пакеты, каждый пакет иллюстрирует какие-то возможности дебага.</p>
+ * <p>Начинать следует с пакета one, потом two и так далее. В каждом пакете есть package-info.java со сценарием проведения демострации</p>
+ *
+ * @author upagge
+ */
+package dev.struchkov.example.debugger;

src/main/java/dev/struchkov/example/debugger/six/AbstractService.java

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+package dev.struchkov.example.debugger.six;
+
+public abstract class AbstractService {
+
+    abstract int processing(int arg);
+
+}

src/main/java/dev/struchkov/example/debugger/six/FirstChild.java

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+package dev.struchkov.example.debugger.six;
+
+public class FirstChild extends AbstractService {
+
+    @Override
+    int processing(int arg) {
+        final int result = arg + 1;
+        return result;
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/six/SecondChild.java

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+package dev.struchkov.example.debugger.six;
+
+public class SecondChild extends AbstractService {
+
+    @Override
+    int processing(int arg) {
+        final int result = arg + 2;
+        return result;
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/six/SixExample.java

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+package dev.struchkov.example.debugger.six;
+
+public class SixExample {
+
+    public static void main(String[] args) {
+        final AbstractService firstChild = new FirstChild();
+        final AbstractService secondChild = new SecondChild();
+
+        demoOne(secondChild);
+        demoTwo(firstChild);
+    }
+
+    private static int demoTwo(AbstractService firstChild) {
+        return firstChild.processing(5);
+    }
+
+    private static int demoOne(AbstractService secondChild) {
+        return secondChild.processing(10);
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/three/ThreadExample.java

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+package dev.struchkov.example.debugger.three;
+
+public class ThreadExample implements Runnable {
+
+    private final String name;
+
+    public ThreadExample(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public void run() {
+        for (int i = 0; i < 10; i++) {
+            System.out.println(name + ": " + i);
+        }
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/three/TreadMain.java

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+package dev.struchkov.example.debugger.three;
+
+public class TreadMain {
+
+    public static void main(String[] args) {
+        final ThreadExample one = new ThreadExample("Первый");
+        final ThreadExample two = new ThreadExample("Второй");
+
+        new Thread(one).start();
+        new Thread(two).start();
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/two/ForExample.java

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+package dev.struchkov.example.debugger.two;
+
+import dev.struchkov.example.debugger.box.SurpriseBox;
+
+public class ForExample {
+
+    public void example() {
+        for (int i = 0; i < 1000; i++) {
+            SurpriseBox.surpriseOne(i);
+
+//            try {
+//                SurpriseBox.surpriseOne(i);
+//            } catch (SurpriseException e) {
+//                System.err.println(e.getMessage());
+//            }
+        }
+    }
+
+}

src/main/java/dev/struchkov/example/debugger/two/Main.java

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+package dev.struchkov.example.debugger.two;
+
+public class Main {
+
+    public static void main(String[] args) {
+        final ForExample forExample = new ForExample();
+        forExample.example();
+    }
+
+}