用JAVA创建一个学生类，包含姓名，年龄，学号，班级，入学年，要能实现：在数组列表中添加一个学生对象； 从列表中删除一个学生对象； 利用学号对名单进行优势排序；

好的，这是一个关于Java编程的问题。对于学生类的要求，你可以这样实现：

public class Student implements Comparable<Student> {
    private String name;
    private int age;
    private String id;
    private String className;
    private int admissionYear;

    public Student(String name, int age, String id, String className, int admissionYear){
        this.name = name;
        this.age = age;
        this.id = id;
        this.className = className;
        this.admissionYear = admissionYear;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getId() {
        return id;
    }

    public String getClassName() {
        return className;
    }

    public int getAdmissionYear() {
        return admissionYear;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public void setId(String id) {
        this.id = id;
    }

    public void setClassName(String className) {
        this.className = className;
    }

    public void setAdmissionYear(int admissionYear) {
        this.admissionYear = admissionYear;
    }

    @Override
    public int compareTo(Student o) {
        return this.id.compareTo(o.id);
    }
}

至于在数组列表中添加、删除学生对象，以及利用学号排序，可以使用Java自带的ArrayList和Collections工具类来完成：

import java.util.ArrayList;
import java.util.Collections;

public class StudentManager {
    private ArrayList<Student> studentList;

    public StudentManager(){
        studentList = new ArrayList<>();
    }

    public void addStudent(Student student){
        studentList.add(student);
    }

    public void removeStudent(Student student){
        studentList.remove(student);
    }

    public void sortById(){
        Collections.sort(studentList);
    }

    // 其他操作...
}

希望这能对你有所帮助！