1 package collection;
 2
 3 /**
 4  * 宠物类
 5  * @author
 6  *
 7  */
 8 public class Pet {
 9     private String name;
10     private String strian;
11
12     public Pet() {
13     }
14
15     public Pet(String name, String strian) {
16         this.name = name;
17         this.strian = strian;
18     }
19
20     public String getName() {
21         return name;
22     }
23     public void setName(String name) {
24         this.name = name;
25     }
26     public String getStrian() {
27         return strian;
28     }
29     public void setStrian(String strian) {
30         this.strian = strian;
31     }
32
33
34 }

 1 package collection;
 2
 3 import java.util.HashMap;
 4 import java.util.Map;
 5 import java.util.Scanner;
 6 import java.util.Set;
 7
 8 public class Test2 {
 9     public static void main(String[] args) {
10         Scanner input=new Scanner(System.in);
11         Map p=new HashMap();
12         p.put("欧欧","雪娜瑞");
13         p.put("亚亚","拉布拉多");
14         p.put("菲菲","金毛");
15         p.put("美美","柯基");
16
17         System.out.println("Map中存在指定对象，对象信息如下：");
18         System.out.print("请输入宠物昵称：");
19         String name=input.next();
20         //分别获取Map中的键和值
21         //先获取到每个key，然后根据每个key拿到相应value
22          Set keys=p.keySet();
23         //使用增强型for拿到每个key
24          for (Object obj : keys) {
25              String key=(String)obj;
26              if(name.equals(key)) {
27                     String value=(String)p.get(key);
28                     System.out.println(key+"\t"+value);
29              }
30         }
31     }
32 }