形参个数可变的方法

 1 public class Answer {
 2     public static void main(String[] args) {
 3         Teacher teacher1 = new Teacher("111","男","222",20,"9999");
 4         Teacher teacher2 = new Teacher("123","女","222",21,"8888");
 5         new Teacher().print1(teacher1);
 6         new Teacher().print2(teacher1,teacher2);
 7         new Teacher().print3(teacher1,teacher2);
 8     }
 9 
10 }
11 class Teacher{
12     private String name;
13     private String sex;
14     private String value;
15     private int age;
16     private String sala;
17     
18     public Teacher() {
19     }
20     public Teacher(String name, String sex, int age) {
21         super();
22         this.name = name;
23         this.sex = sex;
24         this.age = age;
25     }
26     public Teacher(String name, String sex, String value, int age, String sala) {
27         super();
28         this.name = name;
29         this.sex = sex;
30         this.value = value;
31         this.age = age;
32         this.sala = sala;
33     }
34     public void print1(Teacher teacher) {
35         System.out.println(teacher.name );
36         System.out.println(teacher.age );
37         System.out.println(teacher.sala );
38     }
39     public void print2(Teacher...teacher) {
40         int sum = 0;
41         for(int i = 0;i<teacher.length ;i++) {
42             sum += Integer.parseInt(teacher[i].value );
43         }
44         System.out.println(sum/teacher.length );
45     }
46     public void print3(Teacher...teacher) {
47         int sum = 0;
48         for(int i = 0;i<teacher.length ;i++) {
49             sum += teacher[i].age;
50         }
51         System.out.println(sum/teacher.length );
52     }
53 }