递归方法 ，构造器

递归方法

class Student{

     private String name;

     privateintage;

     private String school;

     private String major;

     public Student(String n, inta)

     {

         name = n;

         age = a;

     }

     Student(String n, inta, String s)

     {

         name = n;

         age = a;

         school = s;

     }

     Student(String n, inta, String s, String m)

     {

         name = n;

         age = a;

         school = s;

         major = m;

     }

     public String getName() {

         returnname;

     }

     publicvoid setName(String name) {

         this.name = name;

     }

     publicint getAge() {

         returnage;

     }

     publicvoid setAge(intage) {

         this.age = age;

     }

     public String getSchool() {

         returnschool;

     }

     publicvoid setSchool(String school) {

         this.school = school;

     }

     public String getMajor() {

         returnmajor;

     }

     publicvoid setMajor(String major) {

         this.major = major;

     }

}

publicclass Test {

     publicstaticvoid main(String[] args) {

     Student A = new Student("wjb",19);

     Student B = new Student("wjb",19,"std");

     Student C = new Student("wjb",19,"std","软件工程");

     System.out.println(A.getName()+"\t"+A.getAge());

     System.out.println(B.getName()+"\t"+B.getAge()+"\t"+B.getSchool());

     System.out.println(C.getName()+"\t"+C.getAge()+"\t"+C.getSchool()+"\t"+C.getMajor());

     }

}