package notebook;
import java.util.LinkedHashMap;

public class notebook {
    public static void main(String[] args) {
        LinkedHashMap<Integer,String> notebook=new LinkedHashMap<Integer,String>();
        //存储记录
        notebook.put(1, "Happy");
        notebook.put(2, "New");
        notebook.put(3, "Year");
        notebook.put(4, "Everyone");
        //获取存储记录的数量
        int num=notebook.size();
        System.out.println("存储记录的数量为："+num);
        //查看某一条记录
        System.out.println("第1条记录为："+notebook.get(1));
        //列出所有记录
        for(int i=0;i<num;i++)
        {
            System.out.println(notebook.get(i));
        }
        //删除某一条记录
        notebook.remove(2);
        //列出所有记录
        for(int i=0;i<num;i++)
        {
            System.out.println(notebook.get(i));
}