New example and unit test

core-java-modules/core-java-concurrency-basic-3/src/main/java/com/baeldung/concurrent/synchronizestatic/synchronizedclass/Employee.java

@@ -0,0 +1,32 @@
+package com.baeldung.concurrent.synchronizestatic.synchronizedclass;
+
+/**
+ * Synchronizing static variable with a synchronized block.
+ */
+public class Employee
+{
+    static int count;
+    int id;
+    String name;
+    String title;
+
+    public Employee(int id, String name, String title)
+    {
+        incrementCount();
+        this.id = id;
+        this.name = name;
+        this.title = title;
+    }
+
+    private static void incrementCount() {
+        synchronized(Employee.class) {
+            System.out.println("Count = " + ++count);
+        }
+    }
+
+    public static int getCount() {
+        synchronized(Employee.class) {
+            return count;
+        }
+    }
+}

core-java-modules/core-java-concurrency-basic-3/src/test/java/com/baeldung/concurrent/synchronizestatic/SychronizeStaticDataUnitTest.java

@@ -45,10 +45,24 @@ public class SychronizeStaticDataUnitTest
         }
     }
 
+    @Test
+    public void whenSynchronizedClass_thenDataInOrder() {
+
+        System.out.println("Synchronization with synchronized block on class");
+
+        for(int i = 0; i < numberToTest; i++) {
+            int finalI = i;
+            pool.execute(() ->
+                         {
+                             new com.baeldung.concurrent.synchronizestatic.synchronizedclass.Employee(finalI, "John", "Smith");
+                         });
+        }
+    }
+
     @Test
     public void whenSynchronizedBlock_thenDataInOrder() {
 
-        System.out.println("Synchronization with synchronized block");
+        System.out.println("Synchronization with synchronized block on a private object");
 
         for(int i = 0; i < numberToTest; i++) {
             int finalI = i;