Initialization fails, setter with if statement [duplicate]

public class Person{
    private String email;

    public Person() throws Exception {
        setEmail("[email protected]");
    }

    public Person(String email) throws Exception {
        setEmail(email);
    }
  
  public void setEmail(String email) throws Exception {
        if (email.indexOf('@') == -1 || (email.substring(email.length() - 4) != ".com" && email.substring(email.length() - 3) != ".nz")) {
        throw new Exception("[ERROR] Email not correct");
    } else {
        this.email = email;
        }
    }

However, initialization always fails when I test it this way:

void init() {
        try{
            person = new Person("[email protected]");
        }catch(Exception e) {
            fail("Parameterized constructor failed");
        }
    }

I am not able to figure why. Why is this happening?