package J20250723; import java.util.Objects; /** * @author WanJl * @version 1.0 * @title Student * @description * @create 2025/7/23 */ public class Student implements Comparable{ private Integer id; private String name; public Student() { } public Student(Integer id, String name) { this.id = id; this.name = name; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; Student student = (Student) o; return Objects.equals(id, student.id) && Objects.equals(name, student.name); } @Override public int hashCode() { return Objects.hash(id, name); } @Override public String toString() { return "Student{" + "id=" + id + ", name='" + name + '\'' + '}'; } @Override public int compareTo(Student o) { int r=this.id-o.id; r=r==0?this.name.compareTo(o.getName()):r; return r; } }