Java中的封装

class UniversityStudent{
private String id;//学号
private String name;//姓名
private int age;//年龄
private String professional;//专业
private String academy;//学院
public UniversityStudent(String id,String name,int age,String professiongal,String academy){
super();
this.id=id;
this.name=name;
this.age=age;
this.professional=professional;
this.academy=scademy;}
public String getId(){
return id;
}
public void setId(String id){
this.id=id;}
public String getName(){
this.name=name;
}
public int getAge(){
return age;
}
public void setAge(int age){
this.age=age;
}
public String getProfessional(){
return professional;
}
public void setProfessional(String professional){
this.professional=professional;
}
public String getAcademy(){
return academy;
}
public void setAcadamy(String academy){
this.academy=academy;
}
public void study(String semester){
System.out.println("姓名:"+name);
System.out.println("所在学期："+semester);
Ststem.out.println("学习学院和专业："+academy+"“+professional+”专业”);
}}
public class Demo4_11{
public static void main(String[]args){
UniversityStudent stu1=new UniversityStudent("2018103001",“张三”，20，“软件工程”，“计算机学院”);
stu1.study("第一学期");
System.out.println("================");
UniversityStudent stu2=new UniversityStudent("2018208005","李四"，19，“工商管理”，“工商学院”);
stu2.study("第三学期");
System.out.println("================");
}}