Objects with differnt no. of a class

Question

Hi Peoples!
How can I create a class in which every time "new" operator is used on its constructor I get an Object with different number in sequence.
S-x, where x is integer.
so i get objects with nos. S-1, S-2, S-3.... S-100 ......

Answer 1

Use a static variable to hold the next id. Something like this:
public class SomeClass {
  private static int nextId = 1;
  private final String id;
  public SomeClass() {
    id = "S" + nextId;
    nextId++;