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| package TreeSet_package1; | |
| public class Student implements Comparable<Student> { | |
| private String name; | |
| private int age; | |
| public Student(String name, int age) { | |
| this.name = name; | |
| this.age = age; | |
| } | |
| public Student() { | |
| } | |
| public String getName() { | |
| return name; | |
| } | |
| public void setName(String name) { | |
| this.name = name; | |
| } | |
| public int getAge() { | |
| return age; | |
| } | |
| public void setAge(int age) { | |
| this.age = age; | |
| } | |
| public String toString() { | |
| return "Student{" + | |
| "name='" + name + '\'' + | |
| ", age=" + age + | |
| '}'; | |
| } | |
| //this:表示当前要添加的元素 | |
| //o:表示已经在红黑树存在的元素 | |
| //返回值: | |
| //负数:表示当前要添加的元素是小的,存左边 | |
| //正数:表示当前要添加的元素是大的,存右边 | |
| //0:表示当前要添加的元素已经存在,舍弃 | |
| public int compareTo(Student o) { | |
| //指定排序的规则 | |
| //只看年龄,我想要按照年龄的升序进行排序 | |
| int result = this.getAge() - o.getAge(); | |
| return result; | |
| } | |
| } | |