java之hashCode

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";

        Map<String, Object> map = new HashMap<String, Object>();
        Map<String, Object> myMap = new HashMap<String, Object>();

        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("############################################");

    }

}