Convert Byte Array to UUID Easily in Java

Convert Between Byte Array and UUID in Java

UUIDs (Universally Unique Identifiers) are used in various applications to identify data records, objects and other entities. In the Java language, UUIDs can be represented as an array of bytes. However, it is sometimes necessary to convert between these two representations for various reasons.

How to Convert from UUID to Byte Array

The simplest way to convert from a UUID to a byte array is to use the java.util.UUID class. This class provides several methods for converting UUIDs to byte arrays. The most suitable method for this task is the toString() method, which returns a string representation of the UUID. This string can then be converted to a byte array using the getBytes() method of the java.lang.String class.

How to Convert from Byte Array to UUID

In order to convert a byte array to a UUID, the bytes must first be converted to a string using the new String(byte[]) constructor of the java.lang.String class. The resulting string can then be parsed into a UUID using the static fromString() method of the java.util.UUID class.

Conclusion

While UUIDs and byte arrays may seem like very different types of data, they can be easily and quickly converted between each other using the provided methods. This article has shown how to convert between byte array and UUID in Java, using the existing Java APIs.