【java】TreeSet

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 1 package com.tn.treeSet; 2  3 public class Student { 4     private String name; 5     private int age; 6     public Student(){} 7     public Student(String name, int age) { 8         super(); 9         this.name = name;10         this.age = age;11     }12     public String getName() {13         return name;14     }15     public void setName(String name) {16         this.name = name;17     }18     public int getAge() {19         return age;20     }21     public void setAge(int age) {22         this.age = age;23     }24     @Override25     public String toString() {26         return "Student [name=" + name + "]";27     }    28 }

Student

 1 package com.tn.treeSet; 2  3 import java.util.TreeSet; 4  5 public class TreeSetDemo { 6     public static void main(String[] args){ 7         TreeSet<Student> students=new TreeSet<>();//後一個角括弧內可以省略類型 8         Student student1=new Student("武松",30); 9         Student student2=new Student("林沖",31);10         Student student3=new Student("魯智深",29);11         students.add(student1);12         students.add(student2);13         students.add(student3);14         System.out.println(students);15     }16 }

TreeSetDemo

 運行結果：

 

【java】TreeSet