建立一个人类（Person）和学生类（Student）功能要求： A、Person中包含4个保护型的

privateStringname;
privateStringaddress;
privatecharsex;
privateintage;
publicPerson(){
}
publicPerson(Stringname,Stringaddress,charsex,intage){
super();
this.name=name;
this.address=address;
this.sex=sex;
this.age=age;
}
publicStringtoString(){
return"姓名："+this.name+"，地址："+this.address+"，性别："+this.sex
+"，年龄："+this.age;
}
//setter、getter略
}
classStudentextendsPerson{
privatedoublemath;
privatedoubleenglish;
publicStudent(){
}
publicStudent(Stringname,Stringaddress,charsex,intage,doublemath,
doubleenglish){
super(name,address,sex,age);
this.math=math;
this.english=english;
}
publicStringtoString(){
returnsuper.toString()+"，数学成绩："+this.math+"，英语成绩："+this.english;
}
//setter、getter略
}
publicclassTestDemo{
publicstaticvoidmain(Stringargs[]){
Studentstu=newStudent("张三","北京西城区甲11号德外大街德胜科技园美江大厦A座-6层",'
男',25,90.0,99.0);
System.out.println(stu);
}
}