A comprehensive guide to the Java programming language and both the Java SE 21 and Java SE 17 Developer certification exams, this unique tutorial and reference features a rigorous introduction to programming in Java in addition to meticulous coverage of the exam objectives you need to review to pass the 1Z0-830 and 1Z0-829 exams. Fully updated to reflect changes in the latest exams, it features an increased focus on analyzing code scenarios--not just individual language constructs. Each exam objective is thoroughly addressed, along with the newest features and APIs, and best practices for taking the exam. The only book you need to study for Java SE 21 or Java SE 17 Developer certification.