wip

.gitpod.Dockerfile

@@ -7,10 +7,11 @@ RUN bash -c "sudo install-packages mysql-client"
 USER gitpod
 RUN bash -c "brew install hurl"
 
-ARG JAVA_SDK="21.0.2-amzn"
+ARG JAVA_SDK="22-graalce"
 RUN bash -c ". /home/gitpod/.sdkman/bin/sdkman-init.sh \
     && sdk install java $JAVA_SDK \
     && sdk default java $JAVA_SDK \
+    && sdk install maven
     && sdk install quarkus"
 
 RUN bash -c "curl 'https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip' -o 'awscliv2.zip' && unzip awscliv2.zip && sudo ./aws/install"

pom.xml

@@ -6,7 +6,7 @@
   <artifactId>java-interviews</artifactId>
   <version>1.0.0-SNAPSHOT</version>
   <properties>
-    <compiler-plugin.version>3.8.1</compiler-plugin.version>
+    <compiler-plugin.version>3.8.3</compiler-plugin.version>
     <maven.compiler.release>17</maven.compiler.release>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

src/main/java/cloud/caravana/puzzlers/lang/Ints.java

@@ -0,0 +1,12 @@
+package cloud.caravana.puzzlers.lang;
+
+class Ints {
+    public static void main(String... args){
+        var a = (Integer) 42;
+        var b = (Integer) 42;
+        var i = (Integer) 333;
+        var j = (Integer) 333;
+        System.out.println(a == b);
+        System.out.println(i == j);
+    }
+}

src/main/java/cloud/caravana/refactoring/Cards.java

@@ -0,0 +1,87 @@
+package cloud.caravana.refactoring;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+public class Cards {
+    private List<Card> cards;
+
+    public Cards() {
+        cards = new ArrayList<>();
+        initializeCards();
+    }
+
+    private void initializeCards() {
+        String[] suits = {"Spades", "Hearts", "Diamonds", "Clubs"};
+        String[] ranks = {"Ace", "2", "3", "4", "5", "6", "7", "8", "9", "10", "Jack", "Queen", "King"};
+
+        for (String suit : suits) {
+            for (String rank : ranks) {
+                cards.add(new Card(rank, suit));
+            }
+        }
+    }
+
+    public void shuffle() {
+        Collections.shuffle(cards);
+    }
+
+    public Card pickFirstCard() {
+        return cards.get(0);
+    }
+
+
+
+    private class Card {
+        private String rank;
+        private String suit;
+
+        public Card(String rank, String suit) {
+            this.rank = rank;
+            this.suit = suit;
+        }
+
+        public String getRank() {
+            return rank;
+        }
+
+        public void setRank(String rank) {
+            this.rank = rank;
+        }
+
+        public String getSuit() {
+            return suit;
+        }
+
+        public void setSuit(String suit) {
+            this.suit = suit;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            Card card = (Card) o;
+            return rank.equals(card.rank) && suit.equals(card.suit);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(rank, suit);
+        }
+
+        @Override
+        public String toString() {
+            return rank + " of " + suit;
+        }
+    }
+
+    public static void main(String[] args) {
+        Cards cards = new Cards();
+        cards.shuffle();
+        Card firstCard = cards.pickFirstCard();
+        System.out.println("First card: " + firstCard);
+    }
+}