It requires Java 8 (JDBC 4.2) or higher for modern releases, though older versions support legacy environments back to Java 6.
PostgreSQL offers a rich set of data types that go beyond the SQL standard. The JDBC driver provides robust support for mapping these to Java objects: postgresql jdbc driver
Because PostgreSQL is written in C and Java runs on the Java Virtual Machine (JVM), they cannot communicate directly. The JDBC driver translates Java method calls into the network protocol that PostgreSQL understands, allowing developers to interact with the database using standard Java APIs without worrying about low-level socket programming. It requires Java 8 (JDBC 4