is Ip Address by regex - Android java.net

Android examples for java.net:IP Address

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Description

is Ip Address by regex

Demo Code

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main{

    /**//from   ww w.j  a v  a 2  s .co m
     * isIpAddress
     * whether a charSequence is a valid ip address.
     * @param addr
     * @return
     */
    public static boolean isIpAddress(CharSequence addr) {
        if (addr == null)
            return false;
        if (addr.length() < 7 || addr.length() > 15 || "".equals(addr)) {
            return false;
        }
        String rexp = "([1-9]|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}";
        Pattern pat = Pattern.compile(rexp);
        Matcher mat = pat.matcher(addr);
        return mat.find();
    }

}

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