package test; class Person{ private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } } class Student extends Person{ private String school; public void setSchool(String school) { this.school = school; } public String getSchool() { return school; } } public class Test { public static void main(String args[]){ Student student = new Student(); student.setName("aike"); student.setSchool("清华"); System.out.println(student.getName()); System.out.println(student.getSchool()); } }
default是默认的,不用写。public class ,class(不写默认default)