使用java编程语言的数组列表

如何使用java编程语言创建数组列表，在每个记录中包含多个信息 比如

---

您要做的是面向对象编程和类的典型案例。例如：

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Main
{

    public enum Gender
    {
        male, female
    }

    public static class Person
    {
        public String name;
        public Integer age;
        public Gender gender;

        public Person(String name, Integer age, Gender gender)
        {
            this.name = name;
            this.age = age;
            this.gender = gender;
        }

        public String toString()
        {
            return name + "("+ age + " " + gender + ")";
        }
    }

    public static void main(String[] args)
    {
        // example with array
        Person stefan = new Person("Stefan", 45, Gender.male);
        Person maria = new Person("Maria", 43, Gender.female);
        Person[] array={stefan, maria};
        System.out.println("array=" + Arrays.asList(array));

        // example with ArrayList
        List<Person> arrayList = new ArrayList<Person>();
        arrayList.add(new Person("Robert", 40, Gender.male));
        arrayList.add(new Person("Lisa", 41, Gender.female));
        System.out.println("arrayList="+arrayList);

        // access individual attributes
        Person first = arrayList.get(0);
        System.out.println("first name="   + first.name);
        System.out.println("first age="    + first.age);
        System.out.println("first gender=" + first.gender);
    }
}

---

---请阅读：---您不需要使用

ArrayList

。如果是所有字符串，则可以使用

Map

或实际的类。或者等待记录在Java中实际成为一个对象：）

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Main
{

    public enum Gender
    {
        male, female
    }

    public static class Person
    {
        public String name;
        public Integer age;
        public Gender gender;

        public Person(String name, Integer age, Gender gender)
        {
            this.name = name;
            this.age = age;
            this.gender = gender;
        }

        public String toString()
        {
            return name + "("+ age + " " + gender + ")";
        }
    }

    public static void main(String[] args)
    {
        // example with array
        Person stefan = new Person("Stefan", 45, Gender.male);
        Person maria = new Person("Maria", 43, Gender.female);
        Person[] array={stefan, maria};
        System.out.println("array=" + Arrays.asList(array));

        // example with ArrayList
        List<Person> arrayList = new ArrayList<Person>();
        arrayList.add(new Person("Robert", 40, Gender.male));
        arrayList.add(new Person("Lisa", 41, Gender.female));
        System.out.println("arrayList="+arrayList);

        // access individual attributes
        Person first = arrayList.get(0);
        System.out.println("first name="   + first.name);
        System.out.println("first age="    + first.age);
        System.out.println("first gender=" + first.gender);
    }
}

array=[Stefan(45 male), Maria(43 female)]
arrayList=[Robert(40 male), Lisa(41 female)]
first name=Robert
first age=40
first gender=male