Map集合-根据宠物昵称查找宠物

 package collection;

 /**
  * 宠物类
  * @author
  *
  */
 public class Pet {
     private String name;
     private String strian;

     public Pet() {
     }

     public Pet(String name, String strian) {
         this.name = name;
         this.strian = strian;
     }

     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public String getStrian() {
         return strian;
     }
     public void setStrian(String strian) {
         this.strian = strian;
     }

 }

 package collection;

 import java.util.HashMap;
 import java.util.Map;
 import java.util.Scanner;
 import java.util.Set;

 public class Test2 {
     public static void main(String[] args) {
         Scanner input=new Scanner(System.in);
         Map p=new HashMap();
         p.put("欧欧","雪娜瑞");
         p.put("亚亚","拉布拉多");
         p.put("菲菲","金毛");
         p.put("美美","柯基");

         System.out.println("Map中存在指定对象，对象信息如下：");
         System.out.print("请输入宠物昵称：");
         String name=input.next();
         //分别获取Map中的键和值
         //先获取到每个key，然后根据每个key拿到相应value
          Set keys=p.keySet();
         //使用增强型for拿到每个key
          for (Object obj : keys) {
              String key=(String)obj;
              if(name.equals(key)) {
                     String value=(String)p.get(key);
                     System.out.println(key+"\t"+value);
              }
         }
     }
 }