When retrieving large files from a database in Java, loading the entire content as a byte array causes OutOfMemoryError. The solution is to implement a custom DataSource that wraps an InputStream, then pass it to a DataHandler constructor. This avoids loading all data into memory at once. The tutorial walks through creating an
Table of contents
1. Introduction2. Understanding the InputStream Problem3. Using getBinaryStream4. Working of a DataHandler5. ConclusionSort: