Hi Vishal,
Sorry. Your question is not very clear to me.
If you want to increase the ID by 1, you can do plus 1 and add the record to the list again.

Please try the below method.
You can call this function in the Employee class.

void display(List employees)
{
for (Employee s : employees) //Iterates as long as there are elements in the list. An object s is created of type Employee class.
{
System.out.print("ID, Name and City of the employee are : ");
System.out.println(s.getId()+" "+s.getName()+" " +s.getAddress());
}
}

In Main class,
Employee emp = new Employee();
emp.display(list)