feat: add StaticMember example demonstrating static variables, methods, and blocks

Implemented StaticMember.java to illustrate Java's static keyword usage.
Includes a static variable initialized via a static block and modified
through a static method, showcasing class-level data sharing and lifecycle.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan

Section16StaticFinal/src/StaticMember.java

@@ -0,0 +1,22 @@
+class StaticMember {
+    // Static variable
+    static int count = 0;  // Static variable initialized to 0
+
+    // Static method
+    public static void increment() {
+        count++;  // Static method to increment the count
+    }
+
+    // Static block
+    static {
+        count = 10;  // Static block initializes the static variable 'count' to 10
+    }
+
+    public static void main(String[] args) {
+        // Calling the static method
+        StaticMember.increment();  // Calling the increment method to increase count by 1
+
+        // Printing the static variable
+        System.out.println("Count: " + count);  // Prints the value of count, which is now 11
+    }
+}