package com.javaexample4u.identifiers; public class JavaIdentifiers { /* A name in a java Program is called an Identifier.Which can be used for representing classes,methods , variables and labels. Rules: 1.Java Identifier is composed of a sequence of characters, Which each character may be a letter from a to z or A to Z or digit from 0 to 9 or currency symbol ($) or connecting symbol (_). i.e only a-z,A-Z,0-9,$ and _ If we use other character we will get compile time error saying illegal character. 2.No identifier starts with the digit. 3.There is no length limit for java identifier ,but SUN highly recommended up to 15 characters . 4.Identif...