Answers for "ip adress format control javaa"

2

ip adress format control java

import java.util.regex.Matcher;
import java.util.regex.Pattern;

// Java program to validate an IPv4 address
class Main
{
	// an IPv4 address
	private static final String INET4ADDRESS = "172.8.9.28";

	private static final String IPV4_REGEX =
					"^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\." +
					"(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\." +
					"(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\." +
					"(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$";

	private static final Pattern IPv4_PATTERN = Pattern.compile(IPV4_REGEX);


	public static boolean isValidInet4Address(String ip)
	{
		if (ip == null) {
			return false;
		}

		Matcher matcher = IPv4_PATTERN.matcher(ip);

		return matcher.matches();
	}

	public static void main(String[] args)
	{
		// Validate an IPv4 address
		if (isValidInet4Address(INET4ADDRESS)) {
			System.out.print("The IP address " + INET4ADDRESS + " is valid");
		}
		else {
			System.out.print("The IP address " + INET4ADDRESS + " isn't valid");
		}
	}
}
Posted by: Guest on July-26-2021

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