UUID class
UUID is a program class that generates non-repeated strings. The main function of this program class is to realize an automatic non-repeated string definition based on the timestamp.
Generally, when obtaining a UUID, it is usually a randomly generated content, so it can be obtained by the following methods:
- Obtain the UUID object: public static UUID randomUUID();
- Obtain UUID content according to the character: public static UUID fromString(String name);
In the case of automatic naming of some files, the UUID type is very useful.