/**
 * @program JavaBooks
 * @description: HashMap测试
 * @author: mf
 * @create: 2020/05/11 11:22
 */

package hashmap.test;

import java.util.HashMap;

public class Test {
    public static void main(String[] args) {
        HashMap<String, String> map = new HashMap<>();
        map.put("1", "2");
    }
}