java 集合从类似如下的文本文件中读取出所有的姓名，并打印出重复的 * 姓名和重复的次数，并按重复次数排序：

约定不等于承诺〃 2022-08-17 15:16 15阅读 0赞

package am;  
  
  
/\*  
 \* 从类似如下的文本文件中读取出所有的姓名，并打印出重复的  
 \* 姓名和重复的次数，并按重复次数排序：  
 \*/  
  
  
import java.util.ArrayList;  
import java.util.List;  
import java.util.Map;  
import java.util.TreeMap;  
  
  
public class CopyOfGetNameTest   
\{  
public static void main(String\[\] args)  
\{  
Map<String,Integer> results = new TreeMap<String,Integer>();  
List<User> tm = new ArrayList<User>();  
tm.add(new User("张三", 28));  
tm.add(new User("李四", 35));  
tm.add(new User("张三", 28));  
tm.add(new User("王五", 35));  
tm.add(new User("张三", 28));  
tm.add(new User("李四", 35));  
tm.add(new User("赵六", 28));  
tm.add(new User("田七", 35));  
  
for(User x:tm)  
\{  
dealLine(x,results);  
\}  
for(Map.Entry<String, Integer> m:results.entrySet())  
\{  
System.out.println(m);  
\}  
\}  
  
private static void dealLine(User x, Map<String, Integer> map)   
\{  
String name = x.getName();  
Integer value = (Integer) map.get(name);  
if(value == null)  
\{  
value = 0;  
\}  
map.put(name, value + 1);  
\}  
  
  
public static void dealLine(String line,Map<String, Integer> map)  
\{  
if(!"".equals(line.trim()))  
\{  
String\[\] results =line.split(",");  
if(results.length == 3)  
\{  
String name = results\[1\];  
Integer value =(Integer)map.get(name);  
if(value ==null)  
\{  
value = 0;  
\}   
map.put(name, value + 1);  
\}    
  
\}  
\}  
\}  
class User implements Comparable<User>  
\{  
public String name;  
public Integer value;  
public User(String name,Integer value)  
\{  
this.name = name;  
this.value = value;  
\}  
public String getName()  
\{  
return name;  
\}  
public Integer getAge()  
\{  
return value;  
\}  
@Override  
public String toString()   
\{  
return "name = " + name + "   value = " + value;  
\}  
@Override  
public boolean equals(Object obj)   
\{  
if(this == obj)  
\{  
return true;  
\}  
if(obj instanceof User)  
\{  
User user = (User) obj;  
if((this.name.equals(user.name)) && (this.value == user.value))  
\{  
return true;  
\}  
\}  
return false;  
\}  
  
  
public int compareTo(User user)   
\{  
int num = 0;  
int i = this.name.compareTo(user.name);  
if(i>0)  
\{  
num = 1;   
\}  
else if(i<0)  
\{  
num = -1;  
\}  
else  
\{  
num = this.value>user.value?1:(this.value==user.value?0:-1);  
\}  
return num;  
\}  
\}