Write code to check if a string is Numeric in each character
//package com.book2s; public class Main { public static void main(String[] argv) { String str = "book2s.com"; System.out.println(isNumeric(str)); }// w w w .jav a 2 s.co m public static boolean isNumeric(String str) { if (str == null) { return false; } int length = str.length(); for (int i = 0; i < length; i++) { if (!Character.isDigit(str.charAt(i))) { return false; } } return true; } }