Book Image

Learn Java 17 Programming - Second Edition

By : Nick Samoylov
4 (1)
Book Image

Learn Java 17 Programming - Second Edition

4 (1)
By: Nick Samoylov

Overview of this book

Java is one of the most preferred languages among developers. It is used in everything right from smartphones and game consoles to even supercomputers, and its new features simply add to the richness of the language. This book on Java programming begins by helping you learn how to install the Java Development Kit. You’ll then focus on understanding object-oriented programming (OOP), with exclusive insights into concepts such as abstraction, encapsulation, inheritance, and polymorphism, which will help you when programming for real-world apps. Next, you’ll cover fundamental programming structures of Java such as data structures and algorithms that will serve as the building blocks for your apps with the help of sample programs and practice examples. You’ll also delve into core programming topics that will assist you with error handling, debugging, and testing your apps. As you progress, you’ll move on to advanced topics such as Java libraries, database management, and network programming and also build a sample project to help you understand the applications of these concepts. By the end of this Java book, you’ll not only have become well-versed with Java 17 but also gained a perspective into the future of this language and have the skills to code efficiently with best practices.
Table of Contents (23 chapters)
1
Part 1: Overview of Java Programming
5
Part 2: Building Blocks of Java
15
Part 3: Advanced Java

CRUD data

There are four kinds of SQL statements that read or manipulate data in a database:

  • The INSERT statement adds data to a database.
  • The SELECT statement reads data from a database.
  • The UPDATE statement changes data in a database.
  • The DELETE statement deletes data from a database.

Either one or several different clauses can be added to the preceding statements to identify the data that is requested (such as the WHERE clause) and the order in which the results have to be returned (such as the ORDER clause).

The JDBC connection is represented by java.sql.Connection. This, among others, has the methods required to create three types of objects that allow you to execute SQL statements that provide different functionality to the database side:

  • java.sql.Statement: This simply sends the statement to the database server for execution.
  • java.sql.PreparedStatement: This caches the statement with a certain execution path on the database server by...