feat: Track student info using instance and static variables in School class [school-static-instance-vars]

🔑 Key: school-static-instance-vars

🧠 Logic & Features:
- Created a `School` class that holds:
  • `studentName` (instance variable) – unique for each object
  • `rollNumber` (instance variable) – assigned incrementally per student using static counter
  • `schoolName` (static variable) – shared across all students
  • `totalStudents` (static variable) – keeps track of how many students have been created

- Constructor:
  • Assigns name and auto-increments the roll number using `++totalStudents`.

- Methods:
  • `display()` – non-static method to print individual student info
  • `displayTotalStudents()` – static method to print total number of students created

📌 Key Concepts:
- ✅ **Instance Variables**:
  • Belong to each object; different for each student.

- ✅ **Static (Global) Variables**:
  • `schoolName` is shared and same for all.
  • `totalStudents` is used as a counter to give unique roll numbers.

- ✅ **Static Methods**:
  • Used when logic is related to the class itself, not specific to any object.

- ✅ **Constructor**:
  • Helps auto-assign unique roll numbers using a global counter.

Signed-off-by: Somesh diwan <[email protected]>

Author: Someshdiwan

Section10Methods/LocalandGlobalVariables/src/Main.java

@@ -41,4 +41,4 @@ public static void main(String[] args) {
 
         School.displayTotalStudents();
     }
-}
+}