Java Basics

• ▸ basics JDK vs JRE vs JVM — what's the difference?FREE
• ▸ basics final vs finally vs finalize — three different thingsFREE
• ▸ basics static explained — fields, methods, blocks and nested classes
• ▸ basics Primitives vs reference types — how they differ in memory and behaviour
• ▸ basics Autoboxing — the hidden NullPointerException and the Integer cache
• ▸ basics Widening, narrowing and type promotion in arithmetic
• ▸ basics & vs && and | vs || — short-circuiting explained
• ▸ basics Bitwise and shift operators — >> vs >>> and where they're useful
• ▸ basics switch — from fall-through statements to arrow-style expressions
• ▸ basics var — what local type inference can and can't do
• ▸ basics Enums — much more than named constants
• ▸ basics public static void main — what each keyword is for
• ▸ basics Why double breaks money — and when to reach for BigDecimal
• ▸ basics i++ vs ++i — and the classic i = i++ puzzle
• ▸ basics break, continue and labelled loops
• ▸ basics Default values — why fields get them and local variables don't
• ▸ basics Integer overflow — what happens silently and how to catch it
• ▸ basics Initialization order — static blocks, instance blocks and constructors