1384 } catch (NullPointerException unused) {
1385 return false;
1386 }
1387 }
1388
1389 public int hashCode() {
1390 int h = 0;
1391 Iterator<E> i = iterator();
1392 while (i.hasNext()) {
1393 E obj = i.next();
1394 if (obj != null) {
1395 h += obj.hashCode();
1396 }
1397 }
1398 return h;
1399 }
1400
1401 /**
1402 * Writes this object out to a stream (i.e., serializes it).
1403 *
1404 * <p>
1405 *
1406 * @serialData If this is a private credential set,
1407 * a security check is performed to ensure that
1408 * the caller has permission to access each credential
1409 * in the set. If the security check passes,
1410 * the set is serialized.
1411 */
1412 private void writeObject(java.io.ObjectOutputStream oos)
1413 throws java.io.IOException {
1414
1415 if (which == Subject.PRIV_CREDENTIAL_SET) {
1416 // check permissions before serializing
1417 Iterator<E> i = iterator();
1418 while (i.hasNext()) {
1419 i.next();
1420 }
1421 }
1422 ObjectOutputStream.PutField fields = oos.putFields();
1423 fields.put("this$0", subject);
1424 fields.put("elements", elements);
1425 fields.put("which", which);
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1384 } catch (NullPointerException unused) {
1385 return false;
1386 }
1387 }
1388
1389 public int hashCode() {
1390 int h = 0;
1391 Iterator<E> i = iterator();
1392 while (i.hasNext()) {
1393 E obj = i.next();
1394 if (obj != null) {
1395 h += obj.hashCode();
1396 }
1397 }
1398 return h;
1399 }
1400
1401 /**
1402 * Writes this object out to a stream (i.e., serializes it).
1403 *
1404 * @serialData If this is a private credential set,
1405 * a security check is performed to ensure that
1406 * the caller has permission to access each credential
1407 * in the set. If the security check passes,
1408 * the set is serialized.
1409 */
1410 private void writeObject(java.io.ObjectOutputStream oos)
1411 throws java.io.IOException {
1412
1413 if (which == Subject.PRIV_CREDENTIAL_SET) {
1414 // check permissions before serializing
1415 Iterator<E> i = iterator();
1416 while (i.hasNext()) {
1417 i.next();
1418 }
1419 }
1420 ObjectOutputStream.PutField fields = oos.putFields();
1421 fields.put("this$0", subject);
1422 fields.put("elements", elements);
1423 fields.put("which", which);
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