is Double Negative by Regex - Java java.util.regex

Java examples for java.util.regex:Match Number

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Description

is Double Negative by Regex

Demo Code


//package com.java2s;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

    public static final String DOUBLE_NEGATIVE = "^[1-9]\\d*\\.\\d*|0\\.\\d*[1-9]\\d*|0?\\.0+|0$";

    public static boolean isDOUBLE_NEGATIVE(String str) {
        return Regular(str, DOUBLE_NEGATIVE);
    }//from   w  ww  .  ja va 2s.com

    private static boolean Regular(String str, String pattern) {
        if (null == str || str.trim().length() <= 0)
            return false;
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(str);
        return m.matches();
    }
}

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