package com.simope.myTest;import java.util.HashMap;import java.util.Map;public class Test20151022 { public static void main(String[] args) { int count = 0; String str = "hello world"; String myStr = "hello world"; Mapmap = new HashMap (); Map myMap = new HashMap (); map.put("name", "zhangsan"); map.put("age", "12"); map.put("sex", "man"); myMap.put("name", "zhangsan"); myMap.put("age", "13"); myMap.put("sex", "women"); System.out.println((++count) + ": " + str.hashCode()); System.out.println((++count) + ": " + myStr.hashCode()); System.out.println("############################################"); System.out.println((++count) + ": " + map.get("name").hashCode()); System.out.println((++count) + ": " + map.get("age").hashCode()); System.out.println((++count) + ": " + map.get("sex").hashCode()); System.out.println("############################################"); System.out.println((++count) + ": " + myMap.get("name").hashCode()); System.out.println((++count) + ": " + myMap.get("age").hashCode()); System.out.println((++count) + ": " + myMap.get("sex").hashCode()); System.out.println("############################################"); System.out.println((++count) + ": " + str.getClass()); System.out.println((++count) + ": " + myMap.getClass()); System.out.println("############################################"); }}