在Java中从HashMap移除价值
使用该remove()方法从HashMap中删除值。
首先，创建一个HashMap并添加元素-
HashMap hm = new HashMap();
hm.put("Wallet", new Integer(700));
hm.put("Belt", new Integer(600));
hm.put("Backpack", new Integer(1200));现在，删除一个值，比如用键“Wallet”-
Object ob = hm.remove("Wallet");以下是从HashMap中删除值的示例-
示例
import java.util.*;
public class Demo {
public static void main(String args[]) {
//创建哈希映射
HashMap hm = new HashMap();
hm.put("Wallet", new Integer(700));
hm.put("Belt", new Integer(600));
hm.put("Backpack", new Integer(1200));
System.out.println("Map = "+hm);
Object ob = hm.remove("Wallet");
System.out.println("Map after removing an element= "+hm);
}
}输出结果
Map = {Backpack=1200, Belt=600, Wallet=700}
Map after removing an element= {Backpack=1200, Belt=600}热门推荐
10 朋友新年祝福语大全 简短
11 新年祝福语简短大方兔年
12 搬新家礼物祝福语简短
13 同学见面花束祝福语简短
14 五一假期祝福语幽默简短
15 离职欢送敬酒祝福语简短
16 对学弟的祝福语简短
17 考老师辞职祝福语简短
18 祝福语驱散霉运的话简短