Summary
In this chapter, we discussed and demonstrated how the data in a database can be populated, read, updated, and deleted from a Java application. A short introduction to the SQL language described how to create a database and its structure, how to modify it, and how to execute SQL statements, using Statement, PreparedStatement, and CallableStatement.
Now, you can create and use a database for storing, updating, and retrieving data, and create and use a shared library.
In the next chapter, we will describe and discuss the most popular network protocols, demonstrate how to use them, and how to implement client-server communication using the latest Java HTTP Client API. The protocols reviewed include the Java implementation of a communication protocol based on TCP, UDP, and URLs.
