exception-handling

_bkp.xml

@@ -0,0 +1,91 @@
+<?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>com.serenitydojo</groupId>
+  <artifactId>java-for-testers</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+
+  <name>java-for-testers</name>
+  <url>https://www.serenity-dojo.com</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.assertj</groupId>
+      <artifactId>assertj-core</artifactId>
+      <version>3.23.1</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+      <plugins>
+        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
+        <plugin>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>3.1.0</version>
+        </plugin>
+        <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
+        <plugin>
+          <artifactId>maven-resources-plugin</artifactId>
+          <version>3.0.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.8.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-surefire-plugin</artifactId>
+          <version>2.22.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-jar-plugin</artifactId>
+          <version>3.0.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-install-plugin</artifactId>
+          <version>2.5.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-deploy-plugin</artifactId>
+          <version>2.8.2</version>
+        </plugin>
+        <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
+        <plugin>
+          <artifactId>maven-site-plugin</artifactId>
+          <version>3.7.1</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-project-info-reports-plugin</artifactId>
+          <version>3.0.0</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>11</source>
+          <target>11</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>

pom.xml

@@ -24,6 +24,13 @@
       <version>4.13</version>
       <scope>test</scope>
     </dependency>
+
+    <dependency>
+      <groupId>org.assertj</groupId>
+      <artifactId>assertj-core</artifactId>
+      <version>3.23.1</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>
@@ -70,5 +77,17 @@
         </plugin>
       </plugins>
     </pluginManagement>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <release>21</release>
+          <compilerArgs>--enable-preview</compilerArgs>
+          <source>16</source>
+          <target>16</target>
+        </configuration>
+      </plugin>
+    </plugins>
   </build>
 </project>

src/main/java/com/serenitydojo/Cat.java

@@ -0,0 +1,39 @@
+package com.serenitydojo;
+
+public class Cat extends Pet {
+    private String favoriteToy;
+    public static final String CAT_NOISE = "Meow";
+
+    public Cat(String name, String favoriteToy, int age) {
+        super(name, age);
+        this.favoriteToy = favoriteToy;
+    }
+    public Cat(String name, int age) {
+        super(name, age);
+    }
+
+    public String getFavoriteToy() {
+        return favoriteToy;
+    }
+
+    public void setFavoriteToy(String favoriteToy) {
+        this.favoriteToy = favoriteToy;
+    }
+
+    @Override
+    public String makeNoise() {
+        return CAT_NOISE;
+    }
+    @Override
+    public String play() {
+        return "plays with string";
+    }
+
+    public String getFavoriteFood() {
+        return "Tuna";
+    }
+
+    public static String usualFood() {
+        return "Tuna";
+    }
+}

src/main/java/com/serenitydojo/Dog.java

@@ -0,0 +1,37 @@
+package com.serenitydojo;
+
+public class Dog extends Pet {
+    private String favoriteToy;
+    private boolean isFed = false;
+
+    public static final String DOG_NOISE = "Woof";
+
+    public Dog(String name, String favoriteToy, int age) {
+        super(name, age);
+        this.favoriteToy = favoriteToy;
+    }
+
+    public String getFavoriteToy() {
+        return favoriteToy;
+    }
+
+    public void setFavoriteToy(String favoriteToy) {
+        this.favoriteToy = favoriteToy;
+    }
+
+    public boolean isFed() {
+        return true;
+    }
+
+    // Exercise 4
+    public String makeNoise() {return DOG_NOISE;}
+
+    public void feed() {
+        this.isFed = true;
+    }
+
+    @Override
+    public String play() {
+        return "plays with bone";
+    }
+}

src/main/java/com/serenitydojo/Hamster.java

@@ -0,0 +1,24 @@
+package com.serenitydojo;
+
+public class Hamster extends Pet {
+    private String favoriteGame;
+    public static final String HAMPSTER_NOISE = "Squeak";
+    public Hamster(String name, String favoriteGame, int age) {
+        super(name,age);
+        this.favoriteGame = favoriteGame;
+    }
+
+    public String getFavoriteGame() {
+        return favoriteGame;
+    }
+
+    @Override
+    public String makeNoise() {
+        return HAMPSTER_NOISE;
+    }
+
+    @Override
+    public String play() {
+        return HAMPSTER_NOISE;
+    }
+}

src/main/java/com/serenitydojo/HelloWorldWriter.java

@@ -0,0 +1,9 @@
+package com.serenitydojo;
+
+public class HelloWorldWriter {
+    // Define a method
+    public void writerHelloWord () {
+        System.out.println("Hello World");
+    }
+
+}

src/main/java/com/serenitydojo/Pet.java

@@ -0,0 +1,25 @@
+package com.serenitydojo;
+
+public abstract class Pet {
+
+    private String name;
+    private int age;
+
+    // Constructor Method
+    public Pet(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public abstract String makeNoise();
+
+    public abstract String play();
+}

src/main/java/com/serenitydojo/model/AnimalType.java

@@ -0,0 +1,5 @@
+package com.serenitydojo.model;
+
+public enum AnimalType {
+    CAT, DOG, HAMSTER, FISH, LLAMA
+}

src/main/java/com/serenitydojo/model/Feeder.java

@@ -0,0 +1,17 @@
+package com.serenitydojo.model;
+
+public class Feeder {
+    public String feeds(AnimalType animal, boolean isPremium) {
+
+        switch (animal) {
+            case CAT:
+                return (isPremium) ? "Salmon" : "Tuna";
+            case DOG:
+                return (isPremium) ? "Meat" : "Dog Food";
+            case HAMSTER:
+                return (isPremium) ? "Letucce" : "Cabbage";
+            default:
+                return "Don't known this animal - don't known its food";
+        }
+    }
+}

src/main/java/com/serenitydojo/people/LikeBlue.java

@@ -0,0 +1,9 @@
+package com.serenitydojo.people;
+
+public class LikeBlue implements PersonChecker {
+        public boolean test (Person person) {
+
+            // System.out.println(person.getFavouriteColor());
+            return (person.getFavouriteColor().equals("Blue"));
+        }
+    }

src/main/java/com/serenitydojo/people/PeopleDatabase.java

@@ -0,0 +1,29 @@
+package com.serenitydojo.people;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+
+public class PeopleDatabase {
+    List<Person> allThePeople;
+    public PeopleDatabase(List<Person> allThePeople) {
+        this.allThePeople = allThePeople;
+    }
+
+     //public List<Person> findAllThePeopleWho(PersonChecker check) {
+    public List<Person> findAllThePeopleWho(Predicate<Person> check) {
+        return allThePeople.stream()
+                .filter(check)
+                .collect(Collectors.toList());
+
+//        List<Person> matchingPeople = new ArrayList<>();
+//        for (Person person: allThePeople) {
+//            if (check.test(person)) {
+//                // System.out.println("check TRUE");
+//                matchingPeople.add(person);
+//            }
+//        }
+//        return matchingPeople;
+    }
+}

src/main/java/com/serenitydojo/people/Person.java

@@ -0,0 +1,50 @@
+package com.serenitydojo.people;
+
+public class Person {
+    public enum Gender {MALE, FEMALE}
+
+    String name;
+    Gender gender;
+    int points;
+
+    int age;
+    String favouriteColor;
+
+    public Person(String name, Gender gender, int age, String favouriteColor) {
+        this.name = name;
+        this.gender = gender;
+        this.age = age;
+        this.favouriteColor = favouriteColor;
+        this.points = 0;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Gender getGender() {
+        return gender;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public String getFavouriteColor() {
+        return favouriteColor;
+    }
+
+    public int getPoints() {
+        return points;
+    }
+
+    @Override
+    public String toString (){
+        return name;
+    }
+
+    public void earnPoints(int earnedPoints){
+        System.out.println(getName()+" has just earned "+earnedPoints);
+        points =+ earnedPoints;
+    }
+}

src/main/java/com/serenitydojo/people/PersonChecker.java

@@ -0,0 +1,5 @@
+package com.serenitydojo.people;
+
+public interface PersonChecker {
+    boolean test(Person person);
+}

src/main/resource/hello.txt

@@ -0,0 +1 @@
+Hello Word