Java Essentials — Java

Learn Java Essentials — part of the Java course. This lesson covers What is Java, and why in 2026?, Modern Java, not 1998 Java, from source to running code, Installing Java & three ways to run it, jshell, jbang, Maven, Values, types and the type system, var and local type inference, Expressions, statements and operators, Control flow statements, and Methods, strings and text blocks. Presented as a video-first, node-graph lesson: an interactive scene on the left and an authored slide on the right, with narrated walkthroughs. CHAPTERS 0:00 What is Java, and why in 2026? 2:21 Modern Java, not 1998 Java 4:03 The JVM context — from source to running code 6:21 Installing Java & three ways to run it 8:27 Hello, Java — jshell, jbang, Maven 10:31 Values, types and the type system 13:11 var and local type inference 15:21 Expressions, statements and operators 18:08 Control flow statements 20:21 Methods, strings and text blocks #Java #Essentials #DataEngineering #DataModeling #SQL #GraphL