黑马程序员-Map练习学习日记

来源：互联网发布：mac如何使用财务软件编辑：程序博客网时间：2024/05/13 05:56
.---------------------- <a href="http://www.itheima.com"target="blank">ASP.Net+Unity开发</a>、<a href="http://www.itheima.com"target="blank">.Net培训</a>、期待与您交流！ ----------------------    package heimaLog;import java.util.*;import java.util.Map.Entry;/* * 每一个学生都有对应的归属地 * 学生Stuedent,地址String * 学生属性：姓名，年龄 * 注意：姓名和年龄相同的视为同一个学生 * 保证学生的唯一性 *  * */class SStudent<String,Integer>{private String name;private int age;private String addrees;   SStudent(){}   SStudent(String name,int age){      this.name = name;   this.age = age;   }   public int hashCode(){     return name.hashCode()+age+1;   }   public boolean equals(Object obj){              SStudent s = (SStudent)obj;            return  name.equals(s.name)&&age==s.age;   }   public String getname(){      return name;   }      public int getage(){         return age;   }}public class MapTest {public static void main(String[] args) {// TODO Auto-generated method stub        Map<SStudent<String,Integer>,String> map = new HashMap<SStudent<String,Integer>,String>();                map.put(new SStudent("zhangsan",22),"beijing");        map.put(new SStudent("lisi",23),"tianjin");        map.put(new SStudent("wangwu",28),"shanghai");        map.put(new SStudent("zhaoliu",14),"chengdu");        map.put(new SStudent("huangermazi",22),"jinan");        map.put(new SStudent("huangermazi",22),"jinan");               Set<Map.Entry<SStudent<String,Integer>, String>> set = map.entrySet();              Iterator<Map.Entry<SStudent<String,Integer>, String>> it = set.iterator();              while(it.hasNext()){             Map.Entry<SStudent<String,Integer>, String> me =it.next();      sop(me.getKey().getname()+"----"+me.getKey().getage()+"-------"+me.getValue());                           }                }public static void sop(Object obj){System.out.println(obj);}}----------------- <a href="http://www.itheima.com"target="blank">ASP.Net+Unity开发</a>、<a href="http://www.itheima.com"target="blank">.Net培训</a>、期待与您交流！ ----------------------
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