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}