统计Java数组的对象中属性的出现次数

import java.util.HashMap;

public class ArrayPropertyCounter {
    public static void main(String[] args) {
        // 示例数组
        Person[] array = new Person[5];
        array[0] = new Person("Alice");
        array[1] = new Person("Bob");
        array[2] = new Person("Alice");
        array[3] = new Person("Charlie");
        array[4] = new Person("Alice");

        // 统计属性出现次数
        HashMap<String, Integer> countMap = new HashMap<>();
        for (Person person : array) {
            String property = person.getProperty(); // 获取对象的属性
            if (countMap.containsKey(property)) {
                countMap.put(property, countMap.get(property) + 1);
            } else {
                countMap.put(property, 1);
            }
        }

        // 输出结果
        for (String property : countMap.keySet()) {
            int count = countMap.get(property);
            System.out.println("属性 " + property + " 出现次数：" + count);
        }
    }

    static class Person {
        private String property;

        public Person(String property) {
            this.property = property;
        }

        public String getProperty() {
            return property;
        }
    }
}