[Solved] How can you modify this class to count how many objects of Counter have been created?class Counter { int id; Counter(int id) { this.id = id; } } | Java

Java - Object-Oriented Programming Concepts

How can you modify this class to count how many objects of Counter have been created?

class Counter {
  int id;
  Counter(int id) {
    this.id = id;
  }
}

AAdd a static int variable and increment it in the constructor

BAdd an instance int variable and increment it in the constructor

CAdd a static method to return the count without variables

DAdd a local variable in constructor to count objects

Step-by-Step Solution

Solution:

Step 1: Understand counting objects
To count all objects created, use a static variable shared by all instances.
Step 2: Increment static variable in constructor
Incrementing the static variable inside the constructor updates count each time an object is created.
Final Answer:
Add a static int variable and increment it in the constructor -> Option A
Quick Check:
Static variable tracks all instances [OK]

Quick Trick: Use static variable to count all objects [OK]

Common Mistakes:

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How can you modify this class to count how many objects of Counter have been created?