实例 Java 创建一个存储字符串的键和整数的值的 HashMap

// Import the HashMap class

import java.util.HashMap;

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public class Main {

  public static void main(String[] args) {

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    // Create a HashMap object called people

    HashMap<String, Integer> people = new HashMap<String, Integer>();

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    // Add keys and values (Name, Age)

    people.put("John", 32);

    people.put("Steve", 30);

    people.put("Angie", 33);

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    for (String i : people.keySet()) {

      System.out.println("Name: " + i + " Age: " + people.get(i));

    }

  }

}

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