IP Address Example in Java

Introduction

IP Address is a classic Java console program that demonstrates the concept with complete source code and sample output. Practical numeric and utility programs — primes, factorial, palindrome and similar classics.

This tutorial walks through the program line by line, explains how the logic works, and highlights best practices you can apply in your own code.

Definition

An Internet Protocol address (IP address) is a numerical label assigned to each device participating in a computer network that uses the Internet Protocol for communication.

IP Address Example Program

import java.net.InetAddress;

class FindIPAddress{
	public static void main(String args[]) throws Exception{
		System.out.println(InetAddress.getLocalHost());
	}
}

Sample Output

BM-USER/192.168.0.104

When to use

Use this ip address example when learning or revising core Java syntax.

How it works

1. Execution begins in the main method — the JVM calls this method when you run the class.

2. import java.net.InetAddress; imports a class used later in the program.

3. A println / print call writes text to the console — part of the sample output below.

4. Compare your console output with the sample output for IP Address to confirm the program behaves correctly.

Best Practices

• Use meaningful variable and class names that describe their purpose.
• Compile and run the program locally — modify values to see how output changes.
• Read compiler errors carefully; they usually point to the exact line to fix.

Common Mistakes

• Copying code without understanding each line — practice by changing one statement at a time.
• Mismatching the public class name and the .java filename.
• Forgetting semicolons at the end of statements.