Java HashMap 哈希表

package com.ssm.cts.test;

import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Stack;
import java.util.Vector;

public class ClassTest {
    // 测试
  public static void main(String[] args) {
    
    Map<String, String> map = new HashMap<String, String>();
    map.put("jiang", "9001");
    map.put("zhi", "9002");
    map.put("hao", "9003");

    Iterator<String> iterator = map.keySet().iterator();
    while (iterator.hasNext()) {
      Object key = iterator.next();
      System.out.println(key +":" + map.get(key));
    }
  }
}