题解 | #map简单应用#

import java.util.*;

public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); String name = scanner.next(); Map<Integer, String> map = new HashMap<Integer, String>(); map.put(1, "Amy"); map.put(2, "Joe"); map.put(3, "Tom"); map.put(4, "Susan");

    //write your code here......
    Set<Map.Entry<Integer,String>> entrys = map.entrySet();
    for(Map.Entry<Integer,String> entry:entrys){
        System.out.println(entry.getKey()+":"+entry.getValue());
    }
    map.put(5, name);
    map.remove(4);
    map.replace(3,"Tommy");
    System.out.println();
    
    for(Map.Entry<Integer,String> entry:map.entrySet()){
        System.out.println(entry.getKey()+":"+entry.getValue());
    }
}

}