student1.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 student1 extends Student
{String Cname1,Cname2;
 double grade1,grade2;
 public student1(String name,String sex,String speciality,int age,int no,String Cname1,String Cname2,double grade1,double grade2)
{super(name,sex,speciality,age,no);
this.Cname1=Cname1;
this.Cname2=Cname2;
this.grade1=grade1;
this.grade2=grade2;
}
public student1(String name,String sex,String speciality,int age,int no)
{this(name,sex,speciality,age,no,"未知","未知",0,0);
}

public student1(student1 s1)
{this(s1.name,s1.sex,s1.speciality,s1.age,s1.no,s1.Cname1,s1.Cname2,s1.grade1,s1.grade2);
}
public void setCname1(String Cname1)
{this.Cname1=Cname1;
}
public void setCname2(String Cname2)
{this.Cname2=Cname2;
}
public void setgrade1(double grade1)
{if(grade1>=0 && grade1<=100)
this.grade1=grade1;
else
this.grade1=0;
}
public void setgrade2(double grade2)
{if(grade2>=0 && grade2<=100)
this.grade2=grade2;
else
this.grade2=0;
}
public void set(String name,String sex,String speciality,int age,int no,String Cname1,String Cname2,double grade1,double grade2)
{super.set(name,sex,speciality,age,no);
this.setCname1(Cname1);
this.setCname2(Cname2);
this.setgrade1(grade1);
this.setgrade2(grade2);
}
public String getCname1()
{return this.Cname1;
}
public String getCname2()
{return this.Cname2;
}
public double getgrade1()
{return this.grade1;
}
public double getgrade2()
{return this.grade2;
}
public String toString()
{return super.toString()+","+Cname1+","+Cname2+","+grade1+","+grade2;
}
public void print()
{System.out.println();
}

	public static void main(String args[])
{
	

student1 s1=new student1("刘芸芸","女","计算机专业",19,20063960,"操作系统","数据库原理",90,96);

s1.print();

System.out.println(s1);

student1 s2=new student1("刘明","男","计算机专业",20,20062345,"操作系统","数据库原理",85,80);
s2.print();

System.out.println(s2);

}
}