从哈希表中删除元素

您可以删除哈希表的元素，您可以使用 HashTable 类的 remove() 方法。

对于此方法，您需要传递键或键值对以删除所需的元素。

hashTable.remove("Ram");
or
hashTable.remove("Ram", 94.6);

示例

import java.util.Hashtable;

public class RemovingElements {
   public static void main(String args[]) {
      Hashtable hashTable = new Hashtable();
      hashTable.put("Ram", 94.6);
      hashTable.put("Rahim", 92);
      hashTable.put("Robert", 85);
      hashTable.put("Roja", 93);
      hashTable.put("Raja", 75);

      System.out.println("Contents of the hash table :"+hashTable); 
      hashTable.remove("Ram");
      System.out.println("Contents of the hash table after deleting the specified elements :"+hashTable); 
   }
}

输出

Contents of the hash table :{Rahim = 92, Roja = 93, Raja = 75, Ram = 94.6, Robert = 85}
Contents of the hash table after deleting the specified elements :{Rahim = 92, Roja = 93, Raja = 75, Robert = 85}