How to count the iteration of lambda in Java streams

Question

I have below solution with counter variable, is there any preferred way to get the counter of lambda iteration ?

class Employee {
    String name;
    int salary;
}

public class Calculator {
    private static Integer counter;
    public void method1() {
        counter = 0; // Instead of this, is there any default counter ?
        List<Employee> emp = getData()
        List<Employee> updated = emp.stream().map(Calculator::increaseSalary).collect(Collectors.toList());
        System.out.println("counter = " + counter);
    }
    
    private Employee increaseSalary(Employee emp) {
        counter++;
        emp.setSalary(50000);
        return emp;
    }   
}

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