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class BankOperations {
  private volatile boolean initialized = false;

  public BankOperations() {
    if (!performSSNVerification()) {
      throw new SecurityException("Invalid SSN!");return;                // object construction failed
    }

    this.initialized = true; // Object construction successful
  }

  private boolean performSSNVerification() {
    return false;
  }

  public void greet() {
    if (!this.initialized) {
      throw new SecurityException("Invalid SSN!");
    }

    System.out.println(
        "Welcome user! You may now use all the features.");
  }
}