Quick-reference pages for Java data types, keywords, and common APIs. Bookmark these for when you need to look something up fast.
Reference pages are designed for quick lookup, not sequential reading. They're the pages you bookmark and return to when you can't remember whether
int
is 32-bit or 64-bit, or what the default value of a
boolean
field is. Each page is dense with tables and examples, optimized for scanning rather than reading cover-to-cover.
When you're learning, the tutorials explain concepts in depth. When you're coding, the reference pages help you recall the details. Both have their place: don't try to learn Java from the reference pages alone, but do refer to them when you need a quick reminder.
All primitive types with size, range, default value, and wrapper class. Plus guidance on choosing between types.
Every Java keyword with syntax, usage, and examples. From access modifiers to control flow to exception handling.
