TreeMap 代码找错 - 黑马程序员技术交流社区

//treeMap,姓名小到大，年龄大到小
package cn.itcast.practice;
import java.util.Comparator;
import java.util.Set;
import java.util.TreeMap;
public class TreeMapDemo {
public static void main(String[] args) {
Person p1=new Person("001",23);
Person p2=new Person("001",24);
Person p3=new Person("002",25);
Person p4=new Person("003",26);
Person p5=new Person("004",23);
Person p6=new Person("005",25);
TreeMap<Person,String> treeMap = new TreeMap<Person,String>(new Comparator<Person>(){
@Override
public int compare(Person p1, Person p2) {
//姓名小到大，年龄大到小
int num=p1.getName().compareTo(p1.getName());
int num1=(num==0)? (p2.getAge()-p1.getAge()):num;
return num1;
}});
treeMap.put(p1, "admin");
treeMap.put(p2, "system");
treeMap.put(p3, "scott");
treeMap.put(p4, "scott");
treeMap.put(p5, "scott");
treeMap.put(p6, "system");
System.out.println(treeMap.size());
Set<Person> keys=treeMap.keySet();
for (Person key : keys) {
System.out.println(key.getName()+"---"+key.getAge()+"---"+treeMap.get(key));
}
}
}

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