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LAB Java-Exceptions/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>org.example</groupId>
+    <artifactId>LABJava-Exceptions</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+    </properties>
+
+    <dependency>
+        <groupId>org.junit.jupiter</groupId>
+        <artifactId>junit-jupiter-api</artifactId>
+        <version>5.9.1</version>
+        <scope>test</scope>
+    </dependency>
+
+
+
+</project>

LAB Java-Exceptions/src/main/java/org/example/Person.java

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+package org.example;
+
+public class Person {
+    private int id;
+    private String firstName;
+    private String lastName;
+    private int age;
+    private String occupation;
+
+    public Person(int id, String firstName, String lastName, int age, String occupation) throws IllegalArgumentException {
+        this.id = id;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        setAge(age);
+        this.occupation = occupation;
+    }
+
+    public void setAge(int age) throws IllegalArgumentException {
+        if (age < 0) {
+            throw new IllegalArgumentException("Age cannot be less than 0.");
+        }
+        this.age = age;
+    }
+
+    public boolean equals(Person other) {
+        if (other == null) return false;
+        return this.getFullName().equals(other.getFullName()) &&
+                this.age == other.age &&
+                this.occupation.equals(other.occupation);
+    }
+
+    public String toString() {
+        return "ID: " + id + ", Name: " + getFullName() + ", Age: " + age + ", Occupation: " + occupation;
+    }
+
+    public String getFullName() {
+        return firstName + " " + lastName;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public String getOccupation() {
+        return occupation;
+    }
+}

LAB Java-Exceptions/src/main/java/org/example/PersonsList.java

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+package org.example;
+
+
+import java.util.*;
+
+public class PersonsList {
+    private List<Person> persons;
+    private int nextId = 1000;
+
+    public PersonsList() {
+        persons = new ArrayList<>();
+    }
+
+    public void addPerson(Person person) {
+        persons.add(person);
+    }
+
+    public Person findByName(String name) throws IllegalArgumentException {
+        try {
+            if (name == null || !name.matches("^[A-Za-z]+\\s[A-Za-z]+$")) {
+                throw new IllegalArgumentException("Name must be in the format 'FirstName LastName'.");
+            }
+
+            return persons.stream()
+                    .filter(p -> p.getFullName().equalsIgnoreCase(name))
+                    .findFirst()
+                    .orElse(null);
+
+        } catch (IllegalArgumentException e) {
+
+            throw e;
+        } catch (Exception e) {
+            System.err.println("Unexpected error in findByName: " + e.getMessage());
+            return null;
+        }
+    }
+
+    public Object clone(Person person1) {
+        return null;
+    }
+
+    public void writePersonToFile(Person person1, String s) {
+    }
+}
+
+

LAB Java-Exceptions/src/test/java/org/example/PersonTest.java

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+package org.example;
+
+import org.junit.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class PersonTest {
+    @Test
+    public void testSetValidAge() throws IllegalArgumentException {
+        Person person = new Person(1, "Lara", "Brown", 25, "Senior Developer");
+        person.setAge(30);
+        assertEquals(30, person.getAge());
+    }
+
+    @Test
+    public void testSetAgeInvalid() throws IllegalArgumentException {
+        Person person = new Person(2, "Bob", "Green", 40, "Teacher");
+        try {
+            person.setAge(-1);
+            fail("Expected IllegalArgumentException");
+        } catch (IllegalArgumentException e) {
+            assertEquals("Age cannot be less than 0.", e.getMessage());
+        }
+    }
+
+
+}

LAB Java-Exceptions/src/test/java/org/example/PersonsListTest.java

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+package org.example;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class PersonsListTest {
+
+    private PersonsList list;
+    private Person person1;
+    private Person person2;
+
+    @BeforeEach
+    void setUp() throws IllegalArgumentException {
+        list = new PersonsList();
+        person1 = new Person(1, "Alice", "Brown", 28, "Designer");
+        person2 = new Person(2, "Charlie", "Black", 33, "Manager");
+        list.addPerson(person1);
+        list.addPerson(person2);
+    }
+
+    @Test
+    void testFindByNameValid() {
+        try {
+            Person found = list.findByName("Charlie Black");
+            assertNotNull(found);
+            assertEquals("Charlie Black", found.getFullName());
+        } catch (IllegalArgumentException e) {
+            fail("Exception should not be thrown for valid name format.");
+        }
+    }
+
+    @Test
+    void testFindByNameInvalidFormat() {
+        try {
+            list.findByName("Charlie");
+            fail("Expected IllegalArgumentException");
+        } catch (IllegalArgumentException e) {
+            assertEquals("Name must be in the format 'FirstName LastName'.", e.getMessage());
+        }
+    }
+
+    @Test
+    void testWritePersonToFile() {
+        try {
+            list.writePersonToFile(person1, "test_output.txt");
+        } catch (Exception e) {
+            fail("Should not throw any exception");
+        }
+    }
+}