From 0a8944456b66b00f732b67558772fc3462b0ce79 Mon Sep 17 00:00:00 2001
From: Mario Benov <mario.ben@mail.bg>
Date: Tue, 5 Nov 2024 23:57:43 +0200
Subject: [PATCH] 11b - inheritance and Object

---
 .../11b/2024-11-04-object-class/.gitignore    | 29 ++++++++++++
 .../2024-11-04-object-class/.idea/.gitignore  |  3 ++
 .../2024-11-04-object-class/.idea/misc.xml    |  6 +++
 .../2024-11-04-object-class/.idea/modules.xml |  8 ++++
 .../11b/2024-11-04-object-class/.idea/vcs.xml |  6 +++
 .../2024-11-04-object-class.iml               | 11 +++++
 .../11b/2024-11-04-object-class/src/Main.java | 44 +++++++++++++++++++
 .../2024-11-04-object-class/src/Pastry.java   | 42 ++++++++++++++++++
 8 files changed, 149 insertions(+)
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/.gitignore
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/.idea/.gitignore
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/.idea/misc.xml
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/.idea/modules.xml
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/.idea/vcs.xml
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/2024-11-04-object-class.iml
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/src/Main.java
 create mode 100644 materials/2024-2025/11b/2024-11-04-object-class/src/Pastry.java

diff --git a/materials/2024-2025/11b/2024-11-04-object-class/.gitignore b/materials/2024-2025/11b/2024-11-04-object-class/.gitignore
new file mode 100644
index 00000000..f68d1099
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/.gitignore
@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/.idea/.gitignore b/materials/2024-2025/11b/2024-11-04-object-class/.idea/.gitignore
new file mode 100644
index 00000000..eaf91e2a
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/.idea/misc.xml b/materials/2024-2025/11b/2024-11-04-object-class/.idea/misc.xml
new file mode 100644
index 00000000..396b4090
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_23" default="true" project-jdk-name="temurin-23" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/.idea/modules.xml b/materials/2024-2025/11b/2024-11-04-object-class/.idea/modules.xml
new file mode 100644
index 00000000..c4f2b1e2
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/2024-11-04-object-class.iml" filepath="$PROJECT_DIR$/2024-11-04-object-class.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/.idea/vcs.xml b/materials/2024-2025/11b/2024-11-04-object-class/.idea/vcs.xml
new file mode 100644
index 00000000..15b5e29f
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/2024-11-04-object-class.iml b/materials/2024-2025/11b/2024-11-04-object-class/2024-11-04-object-class.iml
new file mode 100644
index 00000000..9465dd86
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/2024-11-04-object-class.iml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/src/Main.java b/materials/2024-2025/11b/2024-11-04-object-class/src/Main.java
new file mode 100644
index 00000000..f01cfd77
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/src/Main.java
@@ -0,0 +1,44 @@
+import java.util.HashMap;
+import java.util.Map;
+import java.util.TreeMap;
+
+public class Main {
+    public static void main(String[] args) {
+        Object o1 = new Object();
+        Object o2 = new Object();
+
+        System.out.println(o1);
+        System.out.println(o2);
+        System.out.println(o1 == o2);
+        System.out.println(o1.equals(o2));
+        System.out.println(o1.toString());
+
+        Pastry p1 = new Pastry("Prava", false);
+        Pastry p2 = new Pastry("Sofiiska", true);
+        Pastry p3 = new Pastry("Prava", false);
+
+        System.out.println(p1);
+        System.out.println(p2);
+        System.out.println(p1 == p2);
+        System.out.println(p1.equals(p2));
+        System.out.println(p1.hashCode());
+        System.out.println(p2.hashCode());
+
+        System.out.println(p1 == p3);
+        System.out.println(p1.equals(p3));
+
+        Map<Pastry, Pastry> map1 = new HashMap<>();
+        map1.put(p1, p1);
+        map1.put(p2, p2);
+        map1.put(p3, p3);
+        System.out.println(map1);
+        System.out.println(map1.keySet());
+
+        Map<Pastry, Pastry> map2 = new TreeMap<>();
+        map2.put(p1, p1);
+        map2.put(p2, p2);
+        map2.put(p3, p3);
+        System.out.println(map2);
+        System.out.println(map2.keySet());
+    }
+}
\ No newline at end of file
diff --git a/materials/2024-2025/11b/2024-11-04-object-class/src/Pastry.java b/materials/2024-2025/11b/2024-11-04-object-class/src/Pastry.java
new file mode 100644
index 00000000..783a6a1a
--- /dev/null
+++ b/materials/2024-2025/11b/2024-11-04-object-class/src/Pastry.java
@@ -0,0 +1,42 @@
+import java.util.Objects;
+
+public class Pastry {
+    private String name;
+    private boolean hasCheese;
+
+    public Pastry(String name, boolean hasCheese) {
+        this.name = name;
+        this.hasCheese = hasCheese;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public boolean getHasCheese() {
+        return hasCheese;
+    }
+
+    @Override
+    public String toString() {
+        return "Pastry{" +
+                "name='" + name + '\'' +
+                ", hasCheese=" + hasCheese +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Pastry pastry = (Pastry) o;
+        return hasCheese == pastry.hasCheese &&
+//                Objects.equals(name, pastry.name);
+                name.equals(pastry.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, hasCheese);
+    }
+}