The Java Textbook

Start here Practice problems Quick reference Progress

Part 1objects-and-methods

1.1Primitives

Part 2selection-and-iteration

2.1Boolean expressions
2.2Loops

Part 3class-creation

3.1Writing a class

Part 4data-collections

4.1Arrays
4.2ArrayList
4.32-D arrays
4.4Search and sort
4.5Recursion

Part 5the-exam

5.1Free response

Practice · Warm-up

Three array traversals, three boundaries