定义ArrayList存储如上学生对象信息,并遍历展示出来

好的，以下是Java代码示例：

import java.util.ArrayList;

public class Student {
    private String name;
    private int age;
    private String gender;
    private String major;

    public Student(String name, int age, String gender, String major) {
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.major = major;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getGender() {
        return gender;
    }

    public String getMajor() {
        return major;
    }

    public static void main(String[] args) {
        ArrayList<Student> students = new ArrayList<>();
        students.add(new Student("张三", 20, "男", "计算机科学"));
        students.add(new Student("李四", 21, "女", "信息工程"));
        students.add(new Student("王五", 22, "男", "通信工程"));

        for (Student student : students) {
            System.out.println("姓名：" + student.getName() + "，年龄：" + student.getAge()
                    + "，性别：" + student.getGender() + "，专业：" + student.getMajor());
        }
    }
}

运行结果：

姓名：张三，年龄：20，性别：男，专业：计算机科学
姓名：李四，年龄：21，性别：女，专业：信息工程
姓名：王五，年龄：22，性别：男，专业：通信工程