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src/java.base/share/classes/sun/security/ssl/SupportedGroupsExtension.java

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rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD


 466 
 467         // cache to speed up the parameters construction
 468         static final Map<NamedGroup,
 469                     AlgorithmParameters> namedGroupParams = new HashMap<>();
 470 
 471         // the supported named groups
 472         static final NamedGroup[] supportedNamedGroups;
 473 
 474         static {
 475             boolean requireFips = SunJSSE.isFIPS();
 476 
 477             // The value of the System Property defines a list of enabled named
 478             // groups in preference order, separated with comma.  For example:
 479             //
 480             //      jdk.tls.namedGroups="secp521r1, secp256r1, ffdhe2048"
 481             //
 482             // If the System Property is not defined or the value is empty, the
 483             // default groups and preferences will be used.
 484             String property = GetPropertyAction
 485                     .privilegedGetProperty("jdk.tls.namedGroups");
 486             if (property != null && property.length() != 0) {
 487                 // remove double quote marks from beginning/end of the property
 488                 if (property.length() > 1 && property.charAt(0) == '"' &&
 489                         property.charAt(property.length() - 1) == '"') {
 490                     property = property.substring(1, property.length() - 1);
 491                 }
 492             }
 493 
 494             ArrayList<NamedGroup> groupList;
 495             if (property != null && property.length() != 0) {
 496                 String[] groups = property.split(",");
 497                 groupList = new ArrayList<>(groups.length);
 498                 for (String group : groups) {
 499                     group = group.trim();
 500                     if (!group.isEmpty()) {
 501                         NamedGroup namedGroup = NamedGroup.nameOf(group);
 502                         if (namedGroup != null &&
 503                                 (!requireFips || namedGroup.isFips)) {
 504                             if (isAvailableGroup(namedGroup)) {
 505                                 groupList.add(namedGroup);
 506                             }
 507                         }   // ignore unknown groups
 508                     }
 509                 }
 510 
 511                 if (groupList.isEmpty()) {
 512                     throw new IllegalArgumentException(
 513                             "System property jdk.tls.namedGroups(" +
 514                             property + ") contains no supported named groups");
 515                 }




 466 
 467         // cache to speed up the parameters construction
 468         static final Map<NamedGroup,
 469                     AlgorithmParameters> namedGroupParams = new HashMap<>();
 470 
 471         // the supported named groups
 472         static final NamedGroup[] supportedNamedGroups;
 473 
 474         static {
 475             boolean requireFips = SunJSSE.isFIPS();
 476 
 477             // The value of the System Property defines a list of enabled named
 478             // groups in preference order, separated with comma.  For example:
 479             //
 480             //      jdk.tls.namedGroups="secp521r1, secp256r1, ffdhe2048"
 481             //
 482             // If the System Property is not defined or the value is empty, the
 483             // default groups and preferences will be used.
 484             String property = GetPropertyAction
 485                     .privilegedGetProperty("jdk.tls.namedGroups");
 486             if (property != null && !property.isEmpty()) {
 487                 // remove double quote marks from beginning/end of the property
 488                 if (property.length() > 1 && property.charAt(0) == '"' &&
 489                         property.charAt(property.length() - 1) == '"') {
 490                     property = property.substring(1, property.length() - 1);
 491                 }
 492             }
 493 
 494             ArrayList<NamedGroup> groupList;
 495             if (property != null && !property.isEmpty()) {
 496                 String[] groups = property.split(",");
 497                 groupList = new ArrayList<>(groups.length);
 498                 for (String group : groups) {
 499                     group = group.trim();
 500                     if (!group.isEmpty()) {
 501                         NamedGroup namedGroup = NamedGroup.nameOf(group);
 502                         if (namedGroup != null &&
 503                                 (!requireFips || namedGroup.isFips)) {
 504                             if (isAvailableGroup(namedGroup)) {
 505                                 groupList.add(namedGroup);
 506                             }
 507                         }   // ignore unknown groups
 508                     }
 509                 }
 510 
 511                 if (groupList.isEmpty()) {
 512                     throw new IllegalArgumentException(
 513                             "System property jdk.tls.namedGroups(" +
 514                             property + ") contains no supported named groups");
 515                 }


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