标签:his public err string nts 属性 ret gets 设计原则
1.公有的类
2.提供公有的不带参数的默认的构造方法
3.属性私有
4.属性setter/getter封装
新建一个Students类(持久化类)
import java.util.Date; //学生类 public class Students { // 1.公有的类 // 2.提供公有的不带参数的默认的构造方法 // 3.属性私有 // 4.属性setter/getter封装 private int sid;// 学号 private String sname;// 姓名 private String gender;// 性别 private Date birthday;// 出生日期 private String address;// 地址 public Students() { } public Students(int sid, String sname, String gender, Date birthday, String address) { // super(); this.sid = sid; this.sname = sname; this.gender = gender; this.birthday = birthday; this.address = address; } public int getSid() { return sid; } public void setSid(int sid) { this.sid = sid; } public String getSname() { return sname; } public void setSname(String sname) { this.sname = sname; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } @Override public String toString() { return "Students [sid=" + sid + ", sname=" + sname + ", gender=" + gender + ", birthday=" + birthday + ", address=" + address + "]"; } }
标签:his public err string nts 属性 ret gets 设计原则
原文地址:https://www.cnblogs.com/songsongblue/p/9523071.html