Java Regex Number Validate isNumber(String str)

Description

is Number

License

Open Source License

Declaration

public static boolean isNumber(String str) 

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) {
        boolean bool = false;
        String regex = "[0-9]*";
        bool = check(str, regex);/*from  w w w .  j  a  v a  2 s .c o  m*/
        return bool;
    }

    public static boolean check(String str, String regex) {
        boolean flag = false;
        try {
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(str);
            flag = matcher.matches();
        } catch (Exception e) {
            flag = false;
        }
        return flag;
    }
}

Related

1. isNumber(String str)
2. isNumber(String str)
3. isNumber(String str)
4. isNumber(String str)
5. isNumber(String str)
6. isNumber(String str, String sign)
7. isNumber(String value)
8. isNumber(String value)
9. isNumber(String value)