question: public static X509Certificate [ ] loadCertificates ( InputStream is ) throws CryptoException { byte [ ] certsBytes = null ; try { certsBytes = ReadUtil . readFully ( is ) ; certsBytes = fixCommonInputCertProblems ( certsBytes ) ; is = new ByteArrayInputStream ( certsBytes ) ; CertificateFactory cf = CertificateFactory . getInstance ( X509_CERT_TYPE , BOUNCY_CASTLE . jce ( ) ) ; Collection < ? extends Certificate > certs = cf . generateCertificates ( is ) ; ArrayList < X509Certificate > loadedCerts = new ArrayList < X509Certificate > ( ) ; for ( Iterator < ? extends Certificate > itr = certs . iterator ( ) ; itr . hasNext ( ) ; ) { X509Certificate cert = ( X509Certificate ) itr . next ( ) ; if ( cert != null ) { loadedCerts . add ( cert ) ; } } return loadedCerts . toArray ( new X509Certificate [ loadedCerts . size ( ) ] ) ; } catch ( IOException ex ) { throw new CryptoException ( res . getString ( "NoLoadCertificate.exception.message" ) , ex ) ; } catch ( NoSuchProviderException e ) { throw new CryptoException ( res . getString ( "NoLoadCertificate.exception.message" ) , e ) ; } catch ( CertificateException ex ) { try { return loadCertificatesPkiPath ( new ByteArrayInputStream ( certsBytes ) ) ; } catch ( CryptoException ex2 ) { throw new CryptoException ( res . getString ( "NoLoadCertificate.exception.message" ) , ex ) ; } } finally { IOUtils . closeQuietly ( is ) ; } }
target:  Load one or more certificates from the specified stream.