Java Puzzles

In this article, you will see some Java insight with the help of programs that we call puzzles. These puzzles help you understand the core concept that we might sometime overlooked. 


Guess the output?

Answer : Ha 169

Guess the output?

Answer : false

Guess the output?
(a) Object
(b) double array
(c) None of the above

Answer : double array

Guess the output?
(a) Object
(b) double array
(c) None of the above
(d) Compiler Error

Answer : Object

Guess the output?
(a) woof
(b) woof woof
(c) It varies
(d) Compile Time Error

Answer : woof woof

Guess the output?
(a) true true
(b) false false
(c) true false
(d) false true

Answer : false true

Guess the output?
(a) Default Constructor named Constructor
(b) Default Constructor
(c) Named Constructor
(d) Compile/Runtime Error

Answer : Default Constructor named Constructor

Guess the output?
(a) Hello 
(b) Compile/Runtime Error
(c) Hello
world!
(d) world!

Answer : Hello world!

Guess the output?
(a) I'm constructor
(b) Compile time Error
(c) Runtime Error

Answer : Compile time Error

Guess the output?
(a) 2
(b) 3
(c) 0
(d) Compile/Runtime Error

Answer : 3

Guess the output?
(a) I'm constructor
(b) Compile time Error
(c) Runtime Error

Answer : I'm constructor