摘要：
1 import java.util.*; 2 class TreeMapTest 3 { 4 public static void main(String[] args) 5 { 6 TreeMap<Student,String> tm=new TreeMap<Student,String>(new mycompare()); //new TreeMap<Student,String>(); 不带参数的构造函数，Student中 已经写了compareTo 方法比较 7 tm.put(new Student("lisi01",25),& 阅读全文
摘要：
1 import java.util.*; 2 class HashMapTest //无序 3 { 4 public static void main(String [] args) 5 { 6 HashMap<Student,String> hs=new HashMap<Student,String>(); 7 hs.put(new Student("lisi01",21),"beijing"); 8 hs.put(new Student("lisi02",22),"tianjing") 阅读全文