Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

public class Main {

    public static boolean isDouble(String str) {
        Pattern p = Pattern.compile("^\\d+(\\.\\d+)?$");
        Matcher m = p.matcher(str);
        if (m.matches()) {
            return true;
        }
        return false;
    }
}