Java Puzzle Questions 🎯

Welcome to the exciting world of Java Puzzle Questions! In this lesson, we'll dive into a collection of thought-provoking challenges designed to strengthen your understanding of Java fundamentals. Let's get started!

Understanding the Basics 📝

Before we jump into the puzzles, let's quickly review some basic Java concepts:

Variables: Used to store data. Example: int num = 10;
Methods: Functions that perform specific tasks. Example: public void printMessage() { System.out.println("Hello, World!"); }
Classes: blueprint for creating objects (instances) in Java. Example: public class MyClass { }

Puzzle 1: Variable Types 💡

What is the output of the following code?

java

public class VariableTypes {
    public static void main(String[] args) {
        byte b = 127;
        short s = 32767;
        int i = 2147483647;
        long l = 9223372036854775807L;
        float f = 3.14F;
        double d = 3.14;

        System.out.println(b + " " + s + " " + i + " " + l + " " + f + " " + d);
    }
}

Puzzle 2: Printing Hello, World! 🎯

Write a Java program to print "Hello, World!" to the console.

java

public class HelloWorld {
    public static void main(String[] args) {
        // Complete the code below
        // Don't change the function name or return type

        // Sample solution:
        // System.out.println("Hello, World!");
    }
}

Keep practicing and remember: Java is a journey, and every puzzle solved brings you one step closer to mastery! 💡 📝 🎯