Task 22 completed: Thread-safe vs non-thread-safe counter example

.gitignore

+### 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

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="ms-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file

.idea/modules.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/CounterExampleWithoutSync22.iml" filepath="$PROJECT_DIR$/CounterExampleWithoutSync22.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

CounterExampleWithoutSync22.iml

+<?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

src/CounterExampleWithSync.java

+public class CounterExampleWithSync {
+        static int counter = 0;
+
+        public static synchronized void increment() {
+            counter++;
+        }
+
+        public static void main(String[] args) throws InterruptedException {
+            Runnable task = () -> {
+                for (int i = 0; i < 1000; i++) {
+                    increment(); // thread-safe
+                }
+            };
+
+            Thread t1 = new Thread(task);
+            Thread t2 = new Thread(task);
+
+            t1.start();
+            t2.start();
+
+            t1.join();
+            t2.join();
+
+            System.out.println("Final Counter (With Sync): " + counter);
+        }
+    }
+
+

src/CounterExampleWithoutSync.java

+public class CounterExampleWithoutSync {
+    static int counter = 0;
+
+    public static void main(String[] args) throws InterruptedException {
+        Runnable task = () -> {
+            for (int i = 0; i < 1000; i++) {
+                counter++; // not thread-safe
+            }
+        };
+
+        Thread t1 = new Thread(task);
+        Thread t2 = new Thread(task);
+
+        t1.start();
+        t2.start();
+
+        t1.join();
+        t2.join();
+
+        System.out.println("Final Counter (Without Sync): " + counter);
+    }
+}