Java Puzzles

Java Puzzles from Java Puzzlers: Traps, Pitfalls, and Corner Cases by Joshua Bloch and Neal Gafter

Expressive Puzzlers

• Puzzle 1: Oddity

• Puzzle 2: Time for a Change

• Puzzle 3: Long Division

• Puzzle 4: It's Elementary

• Puzzle 5: The Joy of Hex

• Puzzle 6: Multicast

• Puzzle 7: Swap Meat

• Puzzle 8: Dos Equis

• Puzzle 9: Tweedledum

• Puzzle 10: Tweedledee

Puzzlers with Character

• Puzzle 11: The Last Laugh

• Puzzle 12: ABC

• Puzzle 13: Animal Farm

• Puzzle 14: Escape Rout

• Puzzle 15: Hello Whirled

• Puzzle 16: Line Printer

• Puzzle 17: Huh?

• Puzzle 18: String Cheese Output and solution

• Puzzle 19: Classy Fire

• Puzzle 20: What's My Class?

• Puzzle 21: What's My Class, Take 2

• Puzzle 22: Dupe of URL

• Puzzle 23: No Pain, No Gain

Loopy Puzzlers

• Puzzle 24: A Big Delight in Every Byte Output and solution

• Puzzle 25: Inclement Increment

• Puzzle 26: In the Loop

• Puzzle 27: Shifty i's

• Puzzle 28: Looper

• Puzzle 29: Bride of Looper

• Puzzle 30: Son of Looper

• Puzzle 31: Ghost of Looper

• Puzzle 32: Curse of Looper

• Puzzle 33: Looper Meets the Wolfman

• Puzzle 34: Down for the Count

• Puzzle 35: Minute by Minute

Exceptional Puzzlers

• Puzzle 36: Indecision

• Puzzle 37: Exceptionally Arcane

• Puzzle 38: The Unwelcome Guest

• Puzzle 39: Hello, Goodbye

• Puzzle 40: The Reluctant Constructor

• Puzzle 41: Field and Stream

• Puzzle 42: Thrown for a Loop

• Puzzle 43: Exceptionally Unsafe

• Puzzle 44: Cutting Class

• Puzzle 45: Exhausting Workout

Classy Puzzlers

• Puzzle 46: The Case of the Confusing Constructor

• Puzzle 47: Well, Dog My Cats!

• Puzzle 48: All I Get Is Static

• Puzzle 49: Larger Than Life

• Puzzle 50: Not Your Type

• Puzzle 51: What's the Point?

• Puzzle 52: Sum Fun

• Puzzle 53: Do Your Thing

• Puzzle 54: Null and Void

• Puzzle 55: Creationism

Library Puzzlers

• Puzzle 56: Big Problem

• Puzzle 57: What's in a Name?

• Puzzle 58: Making a Hash of It

• Puzzle 59: What's the Difference?

• Puzzle 60: One-Liners

• Puzzle 61: The Dating Game

• Puzzle 62: The Name Game

• Puzzle 63: More of the Same

• Puzzle 64: The Mod Squad

• Puzzle 65: A Strange Saga of a Suspicious Sort

Classier Puzzlers

• Puzzle 66: A Private Matter

• Puzzle 67: All Strung Out

• Puzzle 68: Shades of Gray

• Puzzle 69: Fade to Black

• Puzzle 70: Package Deal

• Puzzle 71: Import Duty

• Puzzle 72: Final Jeopardy

• Puzzle 73: Your Privates Are Showing

• Puzzle 74: Identity Crisis

• Puzzle 75: Heads or Tails?

More Library Puzzlers

• Puzzle 76: Ping Pong

• Puzzle 77: The Lock Mess Monster

• Puzzle 78: Reflection Infection

• Puzzle 79: It's a Dog's Life

• Puzzle 80: Further Reflection

• Puzzle 81: Charred Beyond Recognition

• Puzzle 82: Beer Blast

• Puzzle 83: Dyslexic Monotheism

• Puzzle 84: Rudely Interrupted

• Puzzle 85: Lazy Initialization

Advanced Puzzlers

• Puzzle 86: Poison-Paren Litter

• Puzzle 87a: Strained Relations

• Puzzle 87b: Strained Relations

• Puzzle 87c: Strained Relations

• Puzzle 88: Raw Deal

• Puzzle 89: Generic Drugs

• Puzzle 90: It's Absurd, It's a Pain, It's Superclass!

• Puzzle 91: Serial Killer

• Puzzle 92: Twisted Pair

• Puzzle 93: Class Warfare

• Puzzle 94: Lost in the Shuffle

• Puzzle 95: Just Desserts