student.java

用java编写的简单的成绩管理系统。对于初学者很有帮助

public class Student
{String name,sex,speciality;
int age,no;
public Student(String name,String sex,String speciality,int age,int no)
{this.name=name;
this.sex=sex;
this.speciality=speciality;
this.age=age;
this.no=no;
}
public Student(Student s)
{this(s.name,s.sex,s.speciality,s.age,s.no);
}

public void set(String name,String sex,String speciality,int age,int no)
{this.name=name;

this.sex=sex;

this.speciality=speciality;
if(age>14 & age<50)
this.age=age;

if(no>=20060000 && no <=20069999);
this.no=no;


}

 public String toString() 
 {return this.name+","+this.sex+","+this.speciality+","+this.age+","+this.no;
 }
 public void print() 
 {System.out.println();
 }

public void set(Student s)
{set(s.name,s.sex,s.speciality,s.age,s.no);

}
public String getname()
{return this.name;

}
public String getsex()
{return this.sex;
}
public String getspeciality()
{return this.speciality;
}
public int getage()
{return this.age;
}
public int getno()
{return this.no;
}
public static void main(String args[])
{
Student s1=new Student("王明","男","计算机专业",20,20062200);
s1.print();
System.out.println(s1);
    
Student s2=new Student(s1);
s2.set("王云","女","计算机专业",18,20061000);

s2.print();
System.out.println(s2);
Student s3=new Student(s2);
s3.set("刘芸芸","女","计算机专业",19,20063960);
s3.print();
System.out.println(s3);
    }

}