how to generate random id in java

To generate a random ID in Java, you can use the UUID (Universally Unique Identifier) class from the java.util package.

The UUID class generates a random ID that is guaranteed to be unique across all devices, at all times.

Here's an example of how to generate a random ID in Java using the UUID class:

UUID uuid = UUID.randomUUID();
String id = uuid.toString();

In the above example, a new UUID object is generated using the randomUUID() method, and the toString() method is used to convert the UUID to a String representation. The resulting String is stored in the id variable.

For example, the id variable might contain a value like "f81d4fae-7dec-11d0-a765-00a0c91e6bf6".

You can use this id variable as a unique identifier for an object or record in your application.

For more information on the UUID class and how to use it in Java, you can refer to the documentation in the Java API.