/*

* @由于个人水平有限, 难免有些错误, 还请指点:

* @Author: cpu_code

* @Date: 2020-09-17 13:33:48

* @LastEditTime: 2020-09-17 13:37:05

* @FilePath: \java\aggregation\aggregation16.JAVA

* @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)

* @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)

* @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)

* @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)

*/

package aggregation;

import java.util.HashMap;

public class aggregation16 {

public static void main(String[] args) {

HashMap<String, String> map = new HashMap<String, String>();

map.put("cpucode", "1");

map.put("cpu", "2");

map.put("hello", "3");

System.out.println(map);

System.out.println(map.remove("hello"));

System.out.println(map);

System.out.println(map.get("cpucode"));

System.out.println(map.get("cpu"));

}

}

/*

{cpucode=1, cpu=2, hello=3}

3

{cpucode=1, cpu=2}

1

2

*/