Java中HashMap使用范例代码，hashmap范例,import java.

Java中HashMap使用范例代码，hashmap范例,import java.

import java.util.HashMap;public class prices {   public static void main(String[] args) {      HashMap<String,Integer> prices = new HashMap<String,Integer>();      prices.put("walmart", 88);      prices.put("target", 100);      prices.put("kmart", 77);      prices.put("lowes", 90);      System.out.println("walmart's price: " + prices.get("walmart"));      System.out.println("Number of prices: " + prices.size());      if (prices.containsKey("target")) {         prices.remove("target");         System.out.println("Record successfully removed.");      }      System.out.println("number of prices: " + prices.size());   }}