Foolproof way of differentiating String and UUID
Using exceptions to replace logic is never a good option. In this case the use of the exception is also erroneous, logically speaking.
First one must consider why the exception is thrown and if it is a case where the act of throwing the exception is JVM dependent.
My JDK for instance points to the following logic when evaluating if the exception is thrown
String[] var1 = var0.split("-");
if (var1.length != 5) {
throw new IllegalArgumentException("Invalid UUID string: " + var0);
}
As one can see, it is a simple and fast check.
Long.decode, as mentioned also throws one exception a NumberFormatException, which might be a big stretch to understand this as a validation mechanism.
Even when those start getting ugly, one might still use the rational that leads to UUID is invalid if any of those is invalid.
But the matter of the fact is that the real test one could get from this exceptions, if one chooses to use this exception to build logic, is that it is enough to say that the String is an UUID if it is translatable to 5 numbers separated by "-". (!)
Of course the RFC 4122 goes beyond that.
But let's focus on Java and the UUID class. https://docs.oracle.com/javase/8/docs/api/java/util/UUID.html
One could simply use the documented format to create a validator
UUID = <time_low> "-" <time_mid> "-" <time_high_and_version> "-" <variant_and_sequence> "-" <node> time_low = 4*<hexOctet> time_mid = 2*<hexOctet> time_high_and_version = 2*<hexOctet> variant_and_sequence = 2*<hexOctet> node = 6*<hexOctet> hexOctet = <hexDigit><hexDigit> hexDigit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "a" | "b" | "c" | "d" | "e" | "f" | "A" | "B" | "C" | "D" | "E" | "F"
This could be translated in java to
private static final String TIME_LOW = "[0-9a-fA-F]{8}";
private static final String TIME_MID = "[0-9a-fA-F]{4}";
private static final String TIME_HIGH_AND_VERSION = "[0-9a-fA-F]{4}";
private static final String VARIANT_AND_SEQUENCE = "[0-9a-fA-F]{4}";
private static final String NODE = "[0-9a-fA-F]{12}";
private static final Pattern UUID_PATTERN = Pattern.compile( "^" + TIME_LOW + "-" + TIME_MID + "-" + TIME_HIGH_AND_VERSION + "-" + VARIANT_AND_SEQUENCE + "-" + NODE + "$" );
Of course, this is just to be externally descriptive.
This is a first try, that aligns with the documentation. But according to the RFC and other documents, there are extras constrains, given a layout dictated by the version and variant of the UUID.
Several people do propose regex as:
"^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
Or
"(?i)^[0-9a-f]{8}-?[0-9a-f]{4}-?[0-5][0-9a-f]{3}-?[089ab][0-9a-f]{3}-?[0-9a-f]{12}$"
And other version specific regexes...
But this is desconsidering that Java also offers the following method
UUID uuid = new UUID(long mostSigBits, long leastSigBits);
Which leads to arbitrary types and those can be used to generate Strings; those regexes would cause issues for UUIDs like the following:
@Override
public String generate() {
UUID uuid = new UUID(
SecureRandomUtil.nextLong(), SecureRandomUtil.nextLong());
return uuid.toString();
}
If it is worth going on validating versions and variations it is up to your needs. Unless you are sure that the UUIDs are in version 3 or 4 (which are the ones explicitly mentioned in the docs) or you if know the version range...
More code... as expected just one works
public class UuidValidatorTest {
@Test
public void isUuid( ) {
assertEquals( UuidValidator.isUuid( "000-000-000-0-0" ), false );
assertEquals( UuidValidator.isUuid( "1-1-1-1-1" ), false );
assertEquals( UuidValidator.isUuid( "1-1-1-1-1-1" ), false );
assertEquals( UuidValidator.isUuid( "0-0-0-0" ), false );
assertEquals( UuidValidator.isUuid( "a-a-a-a-a" ), false );
assertEquals( UuidValidator.isUuid( "#-b-c-4-3" ), false );
assertEquals( UuidValidator.isUuid( "#-b-c-43" ), false );
assertEquals( UuidValidator.isUuid( "#-b-c-4-3" ), false );
for ( int i = 0; i < 100; i++ ) {
assertEquals( UuidValidator.isUuid( UUID.randomUUID( )
.toString( ) ), true );
}
assertEquals( UuidValidator.isUuid( "0297bba3-910e-6672-89e8-c3eacecfe1fa" ), true );
assertEquals( UuidValidator.isUuid( "02a67f91-c4ca-e886-309a-35cf7079babd" ), true );
assertEquals( UuidValidator.isUuid( "02f07ba0-72a5-cdcd-d41e-e3b4859623b5" ), true );
assertEquals( UuidValidator.isUuid( "0457a05a-4104-a4e9-ae09-a32491d42c5a" ), true );
assertEquals( UuidValidator.isUuid( "07ee5f9a-aa75-ec6f-f73e-7e99d9a40354" ), true );
assertEquals( UuidValidator.isUuid( "08623b7a-75a3-bd91-8d95-eb46eabfd53d" ), true );
assertEquals( UuidValidator.isUuid( "089db790-954c-8db6-f5f6-bbb15e6ae860" ), true );
assertEquals( UuidValidator.isUuid( "08e4be51-4799-2ef9-d2ee-1981fb00a41e" ), true );
assertEquals( UuidValidator.isUuid( "0acf3eed-3455-e9b2-ee8e-5266e6a4d659" ), true );
assertEquals( UuidValidator.isUuid( "0ff8fe99-ce2d-a492-78c6-4a5895f6ad10" ), true );
assertEquals( UuidValidator.isUuid( "15d95f4b-958b-501f-5f73-997070c06a1a" ), true );
assertEquals( UuidValidator.isUuid( "169269e9-044c-63d4-99b4-3661261b3be9" ), true );
assertEquals( UuidValidator.isUuid( "1771bfb3-2c98-b0e9-271f-f59a9a314074" ), true );
assertEquals( UuidValidator.isUuid( "1992d0b4-2c46-6912-f1ec-56f03e2b0ea7" ), true );
assertEquals( UuidValidator.isUuid( "19fc7632-ac67-8cda-7d04-a549cee0585d" ), true );
assertEquals( UuidValidator.isUuid( "1a4ae1c9-b225-b8b2-8dbf-6ba3f497c939" ), true );
assertEquals( UuidValidator.isUuid( "1d71875f-7da2-52c8-ca28-6bd57ac6fb34" ), true );
assertEquals( UuidValidator.isUuid( "1e2dafca-7dd8-ffca-9bf8-a4e6132b0437" ), true );
assertEquals( UuidValidator.isUuid( "1e494bfe-cd24-c2dc-4ac8-0192a1766758" ), true );
assertEquals( UuidValidator.isUuid( "1e50da64-ee2a-769d-187b-cafb04befece" ), true );
assertEquals( UuidValidator.isUuid( "1f856c29-b2f7-d07d-7c2a-611e44628810" ), true );
assertEquals( UuidValidator.isUuid( "2311842f-c032-0cec-3967-4f33b45cc24c" ), true );
assertEquals( UuidValidator.isUuid( "2575d3db-3c8c-21ab-a458-dbc7a5655418" ), true );
assertEquals( UuidValidator.isUuid( "25dc750d-afe7-3394-b199-760486888e74" ), true );
assertEquals( UuidValidator.isUuid( "26293add-e373-90c9-4503-917c448bdcbd" ), true );
assertEquals( UuidValidator.isUuid( "2dc8c6df-ab98-3546-935f-4ba1c3d6fe74" ), true );
assertEquals( UuidValidator.isUuid( "30334014-fac7-1411-113d-1367f1eb6a1b" ), true );
assertEquals( UuidValidator.isUuid( "3109e737-a1a2-cc87-c1dd-111329b3b1a4" ), true );
assertEquals( UuidValidator.isUuid( "32e98007-0a3e-5242-8d0e-f2ae48bf0864" ), true );
assertEquals( UuidValidator.isUuid( "362a1961-3da4-28c4-4067-0be4ce31c159" ), true );
assertEquals( UuidValidator.isUuid( "3b95871a-4dbf-395f-5c9f-e5f323bdfd13" ), true );
assertEquals( UuidValidator.isUuid( "3ef8cc6c-1296-d6d3-903f-d92240885cc9" ), true );
assertEquals( UuidValidator.isUuid( "3fa4ef78-33f3-3e67-9eae-6a67c5716fa9" ), true );
assertEquals( UuidValidator.isUuid( "4046d469-f1b4-ebfc-7264-500d3b4da506" ), true );
assertEquals( UuidValidator.isUuid( "42b4f4c0-6b20-932f-f7c7-c2a2f62208b6" ), true );
assertEquals( UuidValidator.isUuid( "42fb4ec7-a623-665d-73ac-14b4559ce1f0" ), true );
assertEquals( UuidValidator.isUuid( "443e8753-01c4-7901-e839-3ac87573e2b5" ), true );
assertEquals( UuidValidator.isUuid( "446f9fdb-0676-680a-ee49-f252ed4ec538" ), true );
assertEquals( UuidValidator.isUuid( "464eb3e0-dff8-b68a-24a5-70a1753594fc" ), true );
assertEquals( UuidValidator.isUuid( "46ba5592-d353-37a3-842d-1bcc04d6deb8" ), true );
assertEquals( UuidValidator.isUuid( "48699a39-d976-6ef4-0ae0-241c931637d9" ), true );
assertEquals( UuidValidator.isUuid( "4a5dbe49-7214-0d5d-a7b1-a5619b60f400" ), true );
assertEquals( UuidValidator.isUuid( "4a8114ab-173a-d83b-b696-f7db487d2708" ), true );
assertEquals( UuidValidator.isUuid( "4f0d7370-763b-7ea4-452b-39269e788a8c" ), true );
assertEquals( UuidValidator.isUuid( "5086a7dc-c810-6ac4-6951-4212dde66537" ), true );
assertEquals( UuidValidator.isUuid( "5237e6b4-a5d8-4eab-1acf-fff899453d34" ), true );
assertEquals( UuidValidator.isUuid( "52f9a633-8ba1-1001-7d27-0c38a2e28232" ), true );
assertEquals( UuidValidator.isUuid( "53dc03f1-a77e-2f43-d46c-6f166b14f540" ), true );
assertEquals( UuidValidator.isUuid( "56634e53-730f-7a7e-4476-21b06fab20d9" ), true );
assertEquals( UuidValidator.isUuid( "575215c7-69f6-7211-ddb5-a87dd5f755e5" ), true );
assertEquals( UuidValidator.isUuid( "57dfaa94-150e-63e4-4172-bf042f27facf" ), true );
assertEquals( UuidValidator.isUuid( "5802ab41-2543-ecd6-8571-46e6ce389b06" ), true );
assertEquals( UuidValidator.isUuid( "5a7ed59e-8f1b-acde-6edb-3d116f3c99ed" ), true );
assertEquals( UuidValidator.isUuid( "5a8feb9f-09ba-c1df-9407-a28aa743e797" ), true );
assertEquals( UuidValidator.isUuid( "5d98e524-02f9-7dec-0838-feec68e0b95d" ), true );
assertEquals( UuidValidator.isUuid( "5e92060a-a504-afce-3c27-7e1269f90999" ), true );
assertEquals( UuidValidator.isUuid( "5edab579-10b4-7a77-b7cc-7a9688d5e63a" ), true );
assertEquals( UuidValidator.isUuid( "66716e2e-dd18-8782-e33e-4fad7ec299ea" ), true );
assertEquals( UuidValidator.isUuid( "680065c7-4897-46be-75bf-9c74167be8f1" ), true );
assertEquals( UuidValidator.isUuid( "68e41661-9a24-89a1-489e-93ad934b0846" ), true );
assertEquals( UuidValidator.isUuid( "6ac02e05-8bc7-f402-9401-4d54a61c44f6" ), true );
assertEquals( UuidValidator.isUuid( "6b8e08c5-3ee6-b616-2646-38c7d4faa04c" ), true );
assertEquals( UuidValidator.isUuid( "70f13ff1-e205-98f6-a1ff-ccb4af8255d4" ), true );
assertEquals( UuidValidator.isUuid( "724c5782-8c40-8b80-0012-e1d832b9e066" ), true );
assertEquals( UuidValidator.isUuid( "765519f4-51e9-0fd9-2f21-ce0b874b5482" ), true );
assertEquals( UuidValidator.isUuid( "77b3acfd-b7eb-083e-c51c-7d5b30bad312" ), true );
assertEquals( UuidValidator.isUuid( "783d2bc2-e745-d1ae-4cf6-c669e538cf21" ), true );
assertEquals( UuidValidator.isUuid( "7c1d5469-df85-d157-deac-15e86e721f06" ), true );
assertEquals( UuidValidator.isUuid( "7d63c847-037f-7a06-e7ac-981338ca4935" ), true );
assertEquals( UuidValidator.isUuid( "7e60b2d4-94e3-e735-c8a4-16032886b94c" ), true );
assertEquals( UuidValidator.isUuid( "7fed1a4e-59e0-9809-f857-363bbc526604" ), true );
assertEquals( UuidValidator.isUuid( "8228784b-3090-e4a5-185d-97278db07ded" ), true );
assertEquals( UuidValidator.isUuid( "88aedd2a-9785-5925-7105-455df71283c2" ), true );
assertEquals( UuidValidator.isUuid( "89af347d-f602-d4a1-0b1b-545b142d24fd" ), true );
assertEquals( UuidValidator.isUuid( "8a43653f-9268-35c4-2cf6-ebc682d0b68d" ), true );
assertEquals( UuidValidator.isUuid( "8ba6284f-3829-7017-a63e-5b3d54002ac2" ), true );
assertEquals( UuidValidator.isUuid( "8cb60b26-ddfa-ba7a-fb96-e088a94d78de" ), true );
assertEquals( UuidValidator.isUuid( "8de06bac-305e-e1e6-809b-5c7e00c6e662" ), true );
assertEquals( UuidValidator.isUuid( "8f3497bc-037e-d365-f3f2-1adb1c2abc45" ), true );
assertEquals( UuidValidator.isUuid( "92d4d7d9-2c8c-9703-ba4f-3e69fd420a99" ), true );
assertEquals( UuidValidator.isUuid( "92fff203-a3dd-6aa1-4deb-60e1ed929b0c" ), true );
assertEquals( UuidValidator.isUuid( "99d7a461-b9a4-1ba3-0380-638148f097aa" ), true );
assertEquals( UuidValidator.isUuid( "99e2be43-3064-5a6e-9d7f-0aab0ef62733" ), true );
assertEquals( UuidValidator.isUuid( "9e7b55fb-7f9f-6aeb-90b3-4bc331cfae66" ), true );
assertEquals( UuidValidator.isUuid( "a04065b8-c223-77a6-85c5-588ac84f8acf" ), true );
assertEquals( UuidValidator.isUuid( "a1299e22-f2ba-437c-9d3a-cfcee841c76a" ), true );
assertEquals( UuidValidator.isUuid( "a1d5a723-8a39-19ac-339e-78ac35ce96f4" ), true );
assertEquals( UuidValidator.isUuid( "a394cfcd-867b-3ef2-2d0b-3b96ba2e40a8" ), true );
assertEquals( UuidValidator.isUuid( "a3cce812-b718-2ddf-b7de-acd011e8f24a" ), true );
assertEquals( UuidValidator.isUuid( "a4d4a700-7e9f-f4f7-9be3-4ed87b4ba157" ), true );
assertEquals( UuidValidator.isUuid( "a88cb5ec-bc35-4b60-0840-4d541caf6258" ), true );
assertEquals( UuidValidator.isUuid( "a952b4c1-7377-cce5-0b81-c770cd0c884a" ), true );
assertEquals( UuidValidator.isUuid( "abf7d3d0-ae8c-1495-6a44-27cd098f0b2f" ), true );
assertEquals( UuidValidator.isUuid( "ace167ab-2c57-d4a5-0e2a-d486445870cb" ), true );
assertEquals( UuidValidator.isUuid( "ad6f7597-0aef-9ef0-e293-a6ce1583eb7e" ), true );
assertEquals( UuidValidator.isUuid( "b0685971-fee9-38a2-ce30-17b4bd51c8d1" ), true );
}
@Test
public void isUuidWithException( ) {
assertEquals( UuidValidator.isUuidWithException( "000-000-000-0-0" ), false );
assertEquals( UuidValidator.isUuidWithException( "1-1-1-1-1" ), false );
assertEquals( UuidValidator.isUuidWithException( "1-1-1-1-1-1" ), false );
assertEquals( UuidValidator.isUuidWithException( "0-0-0-0" ), false );
assertEquals( UuidValidator.isUuidWithException( "a-a-a-a-a" ), false );
assertEquals( UuidValidator.isUuidWithException( "#-b-c-4-3" ), false );
assertEquals( UuidValidator.isUuidWithException( "#-b-c-43" ), false );
assertEquals( UuidValidator.isUuidWithException( "#-b-c-4-3" ), false );
for ( int i = 0; i < 100; i++ ) {
assertEquals( UuidValidator.isUuidWithException( UUID.randomUUID( )
.toString( ) ), true );
}
assertEquals( UuidValidator.isUuidWithException( "0297bba3-910e-6672-89e8-c3eacecfe1fa" ), true );
assertEquals( UuidValidator.isUuidWithException( "02a67f91-c4ca-e886-309a-35cf7079babd" ), true );
assertEquals( UuidValidator.isUuidWithException( "02f07ba0-72a5-cdcd-d41e-e3b4859623b5" ), true );
assertEquals( UuidValidator.isUuidWithException( "0457a05a-4104-a4e9-ae09-a32491d42c5a" ), true );
assertEquals( UuidValidator.isUuidWithException( "07ee5f9a-aa75-ec6f-f73e-7e99d9a40354" ), true );
assertEquals( UuidValidator.isUuidWithException( "08623b7a-75a3-bd91-8d95-eb46eabfd53d" ), true );
assertEquals( UuidValidator.isUuidWithException( "089db790-954c-8db6-f5f6-bbb15e6ae860" ), true );
assertEquals( UuidValidator.isUuidWithException( "08e4be51-4799-2ef9-d2ee-1981fb00a41e" ), true );
assertEquals( UuidValidator.isUuidWithException( "0acf3eed-3455-e9b2-ee8e-5266e6a4d659" ), true );
assertEquals( UuidValidator.isUuidWithException( "0ff8fe99-ce2d-a492-78c6-4a5895f6ad10" ), true );
assertEquals( UuidValidator.isUuidWithException( "15d95f4b-958b-501f-5f73-997070c06a1a" ), true );
assertEquals( UuidValidator.isUuidWithException( "169269e9-044c-63d4-99b4-3661261b3be9" ), true );
assertEquals( UuidValidator.isUuidWithException( "1771bfb3-2c98-b0e9-271f-f59a9a314074" ), true );
assertEquals( UuidValidator.isUuidWithException( "1992d0b4-2c46-6912-f1ec-56f03e2b0ea7" ), true );
assertEquals( UuidValidator.isUuidWithException( "19fc7632-ac67-8cda-7d04-a549cee0585d" ), true );
assertEquals( UuidValidator.isUuidWithException( "1a4ae1c9-b225-b8b2-8dbf-6ba3f497c939" ), true );
assertEquals( UuidValidator.isUuidWithException( "1d71875f-7da2-52c8-ca28-6bd57ac6fb34" ), true );
assertEquals( UuidValidator.isUuidWithException( "1e2dafca-7dd8-ffca-9bf8-a4e6132b0437" ), true );
assertEquals( UuidValidator.isUuidWithException( "1e494bfe-cd24-c2dc-4ac8-0192a1766758" ), true );
assertEquals( UuidValidator.isUuidWithException( "1e50da64-ee2a-769d-187b-cafb04befece" ), true );
assertEquals( UuidValidator.isUuidWithException( "1f856c29-b2f7-d07d-7c2a-611e44628810" ), true );
assertEquals( UuidValidator.isUuidWithException( "2311842f-c032-0cec-3967-4f33b45cc24c" ), true );
assertEquals( UuidValidator.isUuidWithException( "2575d3db-3c8c-21ab-a458-dbc7a5655418" ), true );
assertEquals( UuidValidator.isUuidWithException( "25dc750d-afe7-3394-b199-760486888e74" ), true );
assertEquals( UuidValidator.isUuidWithException( "26293add-e373-90c9-4503-917c448bdcbd" ), true );
assertEquals( UuidValidator.isUuidWithException( "2dc8c6df-ab98-3546-935f-4ba1c3d6fe74" ), true );
assertEquals( UuidValidator.isUuidWithException( "30334014-fac7-1411-113d-1367f1eb6a1b" ), true );
assertEquals( UuidValidator.isUuidWithException( "3109e737-a1a2-cc87-c1dd-111329b3b1a4" ), true );
assertEquals( UuidValidator.isUuidWithException( "32e98007-0a3e-5242-8d0e-f2ae48bf0864" ), true );
assertEquals( UuidValidator.isUuidWithException( "362a1961-3da4-28c4-4067-0be4ce31c159" ), true );
assertEquals( UuidValidator.isUuidWithException( "3b95871a-4dbf-395f-5c9f-e5f323bdfd13" ), true );
assertEquals( UuidValidator.isUuidWithException( "3ef8cc6c-1296-d6d3-903f-d92240885cc9" ), true );
assertEquals( UuidValidator.isUuidWithException( "3fa4ef78-33f3-3e67-9eae-6a67c5716fa9" ), true );
assertEquals( UuidValidator.isUuidWithException( "4046d469-f1b4-ebfc-7264-500d3b4da506" ), true );
assertEquals( UuidValidator.isUuidWithException( "42b4f4c0-6b20-932f-f7c7-c2a2f62208b6" ), true );
assertEquals( UuidValidator.isUuidWithException( "42fb4ec7-a623-665d-73ac-14b4559ce1f0" ), true );
assertEquals( UuidValidator.isUuidWithException( "443e8753-01c4-7901-e839-3ac87573e2b5" ), true );
assertEquals( UuidValidator.isUuidWithException( "446f9fdb-0676-680a-ee49-f252ed4ec538" ), true );
assertEquals( UuidValidator.isUuidWithException( "464eb3e0-dff8-b68a-24a5-70a1753594fc" ), true );
assertEquals( UuidValidator.isUuidWithException( "46ba5592-d353-37a3-842d-1bcc04d6deb8" ), true );
assertEquals( UuidValidator.isUuidWithException( "48699a39-d976-6ef4-0ae0-241c931637d9" ), true );
assertEquals( UuidValidator.isUuidWithException( "4a5dbe49-7214-0d5d-a7b1-a5619b60f400" ), true );
assertEquals( UuidValidator.isUuidWithException( "4a8114ab-173a-d83b-b696-f7db487d2708" ), true );
assertEquals( UuidValidator.isUuidWithException( "4f0d7370-763b-7ea4-452b-39269e788a8c" ), true );
assertEquals( UuidValidator.isUuidWithException( "5086a7dc-c810-6ac4-6951-4212dde66537" ), true );
assertEquals( UuidValidator.isUuidWithException( "5237e6b4-a5d8-4eab-1acf-fff899453d34" ), true );
assertEquals( UuidValidator.isUuidWithException( "52f9a633-8ba1-1001-7d27-0c38a2e28232" ), true );
assertEquals( UuidValidator.isUuidWithException( "53dc03f1-a77e-2f43-d46c-6f166b14f540" ), true );
assertEquals( UuidValidator.isUuidWithException( "56634e53-730f-7a7e-4476-21b06fab20d9" ), true );
assertEquals( UuidValidator.isUuidWithException( "575215c7-69f6-7211-ddb5-a87dd5f755e5" ), true );
assertEquals( UuidValidator.isUuidWithException( "57dfaa94-150e-63e4-4172-bf042f27facf" ), true );
assertEquals( UuidValidator.isUuidWithException( "5802ab41-2543-ecd6-8571-46e6ce389b06" ), true );
assertEquals( UuidValidator.isUuidWithException( "5a7ed59e-8f1b-acde-6edb-3d116f3c99ed" ), true );
assertEquals( UuidValidator.isUuidWithException( "5a8feb9f-09ba-c1df-9407-a28aa743e797" ), true );
assertEquals( UuidValidator.isUuidWithException( "5d98e524-02f9-7dec-0838-feec68e0b95d" ), true );
assertEquals( UuidValidator.isUuidWithException( "5e92060a-a504-afce-3c27-7e1269f90999" ), true );
assertEquals( UuidValidator.isUuidWithException( "5edab579-10b4-7a77-b7cc-7a9688d5e63a" ), true );
assertEquals( UuidValidator.isUuidWithException( "66716e2e-dd18-8782-e33e-4fad7ec299ea" ), true );
assertEquals( UuidValidator.isUuidWithException( "680065c7-4897-46be-75bf-9c74167be8f1" ), true );
assertEquals( UuidValidator.isUuidWithException( "68e41661-9a24-89a1-489e-93ad934b0846" ), true );
assertEquals( UuidValidator.isUuidWithException( "6ac02e05-8bc7-f402-9401-4d54a61c44f6" ), true );
assertEquals( UuidValidator.isUuidWithException( "6b8e08c5-3ee6-b616-2646-38c7d4faa04c" ), true );
assertEquals( UuidValidator.isUuidWithException( "70f13ff1-e205-98f6-a1ff-ccb4af8255d4" ), true );
assertEquals( UuidValidator.isUuidWithException( "724c5782-8c40-8b80-0012-e1d832b9e066" ), true );
assertEquals( UuidValidator.isUuidWithException( "765519f4-51e9-0fd9-2f21-ce0b874b5482" ), true );
assertEquals( UuidValidator.isUuidWithException( "77b3acfd-b7eb-083e-c51c-7d5b30bad312" ), true );
assertEquals( UuidValidator.isUuidWithException( "783d2bc2-e745-d1ae-4cf6-c669e538cf21" ), true );
assertEquals( UuidValidator.isUuidWithException( "7c1d5469-df85-d157-deac-15e86e721f06" ), true );
assertEquals( UuidValidator.isUuidWithException( "7d63c847-037f-7a06-e7ac-981338ca4935" ), true );
assertEquals( UuidValidator.isUuidWithException( "7e60b2d4-94e3-e735-c8a4-16032886b94c" ), true );
assertEquals( UuidValidator.isUuidWithException( "7fed1a4e-59e0-9809-f857-363bbc526604" ), true );
assertEquals( UuidValidator.isUuidWithException( "8228784b-3090-e4a5-185d-97278db07ded" ), true );
assertEquals( UuidValidator.isUuidWithException( "88aedd2a-9785-5925-7105-455df71283c2" ), true );
assertEquals( UuidValidator.isUuidWithException( "89af347d-f602-d4a1-0b1b-545b142d24fd" ), true );
assertEquals( UuidValidator.isUuidWithException( "8a43653f-9268-35c4-2cf6-ebc682d0b68d" ), true );
assertEquals( UuidValidator.isUuidWithException( "8ba6284f-3829-7017-a63e-5b3d54002ac2" ), true );
assertEquals( UuidValidator.isUuidWithException( "8cb60b26-ddfa-ba7a-fb96-e088a94d78de" ), true );
assertEquals( UuidValidator.isUuidWithException( "8de06bac-305e-e1e6-809b-5c7e00c6e662" ), true );
assertEquals( UuidValidator.isUuidWithException( "8f3497bc-037e-d365-f3f2-1adb1c2abc45" ), true );
assertEquals( UuidValidator.isUuidWithException( "92d4d7d9-2c8c-9703-ba4f-3e69fd420a99" ), true );
assertEquals( UuidValidator.isUuidWithException( "92fff203-a3dd-6aa1-4deb-60e1ed929b0c" ), true );
assertEquals( UuidValidator.isUuidWithException( "99d7a461-b9a4-1ba3-0380-638148f097aa" ), true );
assertEquals( UuidValidator.isUuidWithException( "99e2be43-3064-5a6e-9d7f-0aab0ef62733" ), true );
assertEquals( UuidValidator.isUuidWithException( "9e7b55fb-7f9f-6aeb-90b3-4bc331cfae66" ), true );
assertEquals( UuidValidator.isUuidWithException( "a04065b8-c223-77a6-85c5-588ac84f8acf" ), true );
assertEquals( UuidValidator.isUuidWithException( "a1299e22-f2ba-437c-9d3a-cfcee841c76a" ), true );
assertEquals( UuidValidator.isUuidWithException( "a1d5a723-8a39-19ac-339e-78ac35ce96f4" ), true );
assertEquals( UuidValidator.isUuidWithException( "a394cfcd-867b-3ef2-2d0b-3b96ba2e40a8" ), true );
assertEquals( UuidValidator.isUuidWithException( "a3cce812-b718-2ddf-b7de-acd011e8f24a" ), true );
assertEquals( UuidValidator.isUuidWithException( "a4d4a700-7e9f-f4f7-9be3-4ed87b4ba157" ), true );
assertEquals( UuidValidator.isUuidWithException( "a88cb5ec-bc35-4b60-0840-4d541caf6258" ), true );
assertEquals( UuidValidator.isUuidWithException( "a952b4c1-7377-cce5-0b81-c770cd0c884a" ), true );
assertEquals( UuidValidator.isUuidWithException( "abf7d3d0-ae8c-1495-6a44-27cd098f0b2f" ), true );
assertEquals( UuidValidator.isUuidWithException( "ace167ab-2c57-d4a5-0e2a-d486445870cb" ), true );
assertEquals( UuidValidator.isUuidWithException( "ad6f7597-0aef-9ef0-e293-a6ce1583eb7e" ), true );
assertEquals( UuidValidator.isUuidWithException( "b0685971-fee9-38a2-ce30-17b4bd51c8d1" ), true );
}
}
The only foolproof way is to use
UUID.fromString(yourString);
It will return an
java.lang.IllegalArgumentException: Invalid UUID string: "someString"
Handle the exception.
The javadoc explains the UUID format.