Array & Object

HashMap

注意指定內容型態 <內容型態>

import java.util.HashMap;
import java.util.ArrayList;

public class Test
{

  public static void main(String[] args)
  {
    ArrayList<HashMap> ResList = new ArrayList<HashMap>();
    HashMap<String, String> map = new HashMap<String, String>();

    map.put("A", "111");
    map.put("B", "222");
    map.put("C", "333");
    map.put("D", "444");
    map.put("E", "555");
    map.put("F", "666");
    map.put("G", "777");
    map.put("H", "888");
    map.put("I", "999");
    ResList.add(map);
    ResList.add(map);
    ResList.add(map);
    ResList.add(map);


    if((200-ResList.size()) > 0){
        System.out.print("size:");
        System.out.print(200-ResList.size());
    }
  }
}