package student;

public class Student 
{
    String SNum;
    String SName;
   float EMark,MMark,CMark,SumMark;
    
    
    public Student()
    {
        this("","",0.0f,0.0f,0.0f);
    }
    public Student(String  nu,String na,float en,float ma,float co) 
    {
        SNum=nu;
        SName=na;
        EMark=en;
        MMark=ma;
        CMark=co;
        SumMark=en+ma+co;
    }
    public String getSNum()
    {
        return SNum;
    }
    public String getSName()
    {
        return SName;
    }
    public float getEMark()
    {
        return EMark;
    }
    public float getMMark()
    {
        return  MMark;
    }
    public float getCMark()
    {
        return CMark;
    }

    public float getSumMark(){
	  return SumMark;
  }
    public void setSNum(String newSNum)
    {
        SNum=newSNum;
        
    }
     public void setSName(String newSName)
    {
        SName=newSName;
   
    }
    public void setEMark(float newEMark)
    {
        EMark=newEMark;
        //sum();
    }
    public void setMMark(float newMMark)
    {
        MMark=newMMark;
        //sum();
    }
    public void setCMark(float newCMark)
    {
        CMark=newCMark;
        //sum();
    }
    public float sum(){
        SumMark=EMark+MMark+CMark;
        return SumMark;
    }
   
   
    public String toString()
    {
        return("學號:"+SNum+"姓名"+SName+"英語成績:"+EMark+
                "數學成績:"+MMark+"計算機成績:"+CMark+"總成績:"+SumMark
                );
        }
    public boolean equals(Object x)
    {
            Student b=(Student) x;
            if(this.getSNum().equals(b.getSNum())){return true;}
            else {return false;}
            
        } 
    public int compare(Object x)
  {   
	  Student b=(Student) x;
	  if (this.sum()==b.sum()) {return 0;}
	   else if (this.sum()>b.sum()) {return 1;}
	     else  {return -1;}
	}
    public float testScore()
	{
	   return sum()/3;
        }


}//學生類結束