import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String p="(?:\\d{1,2}|[01]\\d{2}|2[0-4]\\d|25[0-5])";
	    String pattern = p + "(?:\\." + p + "){3}";
	    String text = "192.156.34.56";
	    System.out.println(pattern);
	    Pattern pi=Pattern.compile(pattern);
	    Matcher m=pi.matcher(text);
	    if(m.matches())
	        System.out.println(m.group()+" => true");
	    else
	        System.out.println("False");
    }
 
}

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