Java Regex Number Validate isNumber(String str, String sign)

Here you can find the source of isNumber(String str, String sign)

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Description

is Number

License

Open Source License

Declaration 

public static boolean isNumber(String str, String sign)

Method Source Code

//package com.java2s;
//License from project: Open Source License 

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

public class Main {

    public static boolean isNumber(String str, String sign) {
        String regex = "";
        if ("+".equals(sign)) {
            regex = "^[+]?[0-9]*$";
        } else if ("-".equals(sign)) {
            regex = "^[-][0-9]*$";
        } else {/* w w  w.  j  a  v a  2 s  .c om*/
            regex = "^[+-]?[0-9]*$";
        }
        return match(regex, str);
    }

    private static boolean match(String regex, String str) {
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(str);
        return matcher.matches();
    }
}

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