Spring Validation

Spring Validation is a process used in Java applications to ensure that data entered by users or received from other sources meet specific rules or criteria before being processed. It helps catch errors or incorrect information early, such as missing required fields or invalid formats, by checking data against predefined constraints. This improves the reliability and security of applications, making sure that only valid data proceeds further in the system. Essentially, Spring Validation acts like a gatekeeper that verifies input data adheres to set standards, reducing errors and potential issues downstream.