Computer scienceProgramming languagesJavaAdditional instrumentsRegular expressions

Regexes in programs

Theory

Check IP address

Report a typo

An IP address consists of four numbers from 0 to 255, inclusive, divided by the dots. For example, 127.0.0.1 is a valid IP address, but 256.0.0.1 and 127.0.1 are invalid IP addresses.

For a given string output "YES" if this string is a valid IP address, otherwise output "NO".

Sample Input 1: 

127.0.0.1

Sample Output 1: 

YES

Sample Input 2: 

256.0.0.1

Sample Output 2: 

NO

Sample Input 3: 

127.0.1

Sample Output 3: 

NO

Sample Input 4: 

192.168.123.231

Sample Output 4: 

YES

Sample Input 5: 

-1.0.0.1

Sample Output 5: 

NO

Sample Input 6: 

127.0.0.1.

Sample Output 6: 

NO
Write a program in Java 17
import java.util.Scanner;

class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// start coding here
}
}
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