使用HashSet集合存储Student类对象：使用迭代器及Lambda表达式对其遍历，根据指定学号删除学生对象Java代码实现

以下是Java代码实现：

import java.util.HashSet;
import java.util.Iterator;

public class Student {
    private String id;
    private String name;

    public Student(String id, String name) {
        this.id = id;
        this.name = name;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public static void main(String[] args) {
        HashSet<Student> students = new HashSet<>();
        students.add(new Student("001", "Tom"));
        students.add(new Student("002", "Jerry"));
        students.add(new Student("003", "Lucy"));
        students.add(new Student("004", "Amy"));

        // 使用迭代器遍历
        Iterator<Student> iterator = students.iterator();
        while (iterator.hasNext()) {
            Student student = iterator.next();
            System.out.println(student.getId() + " " + student.getName());
        }

        // 使用Lambda表达式遍历
        students.forEach(student -> System.out.println(student.getId() + " " + student.getName()));

        // 根据指定学号删除学生对象
        String idToRemove = "002";
        students.removeIf(student -> student.getId().equals(idToRemove));
    }
}

其中，使用迭代器遍历的代码为：

Iterator<Student> iterator = students.iterator();
while (iterator.hasNext()) {
    Student student = iterator.next();
    System.out.println(student.getId() + " " + student.getName());
}

使用Lambda表达式遍历的代码为：

students.forEach(student -> System.out.println(student.getId() + " " + student.getName()));

根据指定学号删除学生对象的代码为：

String idToRemove = "002";
students.removeIf(student -> student.getId().equals(idToRemove));