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;

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

public class Main {
    private static Pattern numberPattern = Pattern.compile("^\\d+\\.*\\d*$");

    public static boolean isNumber(String str) {
        if (isEmpty(str)) {
            return false;
        }/*from  www.java 2 s .  c  om*/
        Matcher matcher = numberPattern.matcher(str);
        return matcher.matches();

    }

    public static boolean isEmpty(String str) {
        return str == null || str.isEmpty();
    }
}

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)
7. isNumber(String str, String sign)
8. isNumber(String value)
9. isNumber(String value)