import java.util.Scanner;
class Student
{
public String name;
public float chenji;
Student(String n2,float c2)
{ name=n2; chenji=c2; }
void setDate(String n2,float c2)
{name=n2;chenji=c2;}
void outputStudent()
{System.out.println(name+"同学的JAVA成绩为"+chenji);}
}class Stu extends Student
{ public String name;
public float sports,java,english;
Student(String n2,float c2,float c3,float c4)
{ name=n2; java=c2; sports=c3; english=c4; }
void setDate(String n2,float c2,float c3,float c4)
{name=n2;java=c2; sports=c3; english=c4;}
void outputStudent()
{System.out.println(name+"同学的sports成绩为" +sports + "\n同学的java成绩为" +java+ "\n同学的english成绩为" + english;);}
}
public class Example1
{
public static void main(String[]args)
{
float avger=0;
float sum=0;
Student[] game083_2=new Student[8];
System.out.println("请分别输入同学的姓名和sports成绩,java成绩,english成绩");
for(int i=0;i<game083_2.length;i++)
{
Scanner in=new Scanner(System.in);
String n1=in.nextLine();
float c1=in.nextFloat();
game083_2[i]=new Student(n1,c1,c2,c3,c4);
game083_2[i].outputStudent();
}
for (int i=0;i< game083_2.length;i++ )
{ sum=sum+game083_2[i].chenji;
}
avger=sum/ game083_2.length;
System.out.println("全班的总成绩是"+sum);
System.out.println("全班的平均成绩是"+avger);
}
}算单科成绩的弄出来了。编写多科时候出错。..如果不修改class Student
{
public String name;
public float chenji;
Student(String n2,float c2)
{ name=n2; chenji=c2; }
void setDate(String n2,float c2)
{name=n2;chenji=c2;}
void outputStudent()
{System.out.println(name+"同学的JAVA成绩为"+chenji);}
},用重写的,上面写的应该再哪里修改?谢谢
class Student
{
public String name;
public float chenji;
Student(String n2,float c2)
{ name=n2; chenji=c2; }
void setDate(String n2,float c2)
{name=n2;chenji=c2;}
void outputStudent()
{System.out.println(name+"同学的JAVA成绩为"+chenji);}
}class Stu extends Student
{ public String name;
public float sports,java,english;
Student(String n2,float c2,float c3,float c4)
{ name=n2; java=c2; sports=c3; english=c4; }
void setDate(String n2,float c2,float c3,float c4)
{name=n2;java=c2; sports=c3; english=c4;}
void outputStudent()
{System.out.println(name+"同学的sports成绩为" +sports + "\n同学的java成绩为" +java+ "\n同学的english成绩为" + english;);}
}
public class Example1
{
public static void main(String[]args)
{
float avger=0;
float sum=0;
Student[] game083_2=new Student[8];
System.out.println("请分别输入同学的姓名和sports成绩,java成绩,english成绩");
for(int i=0;i<game083_2.length;i++)
{
Scanner in=new Scanner(System.in);
String n1=in.nextLine();
float c1=in.nextFloat();
game083_2[i]=new Student(n1,c1,c2,c3,c4);
game083_2[i].outputStudent();
}
for (int i=0;i< game083_2.length;i++ )
{ sum=sum+game083_2[i].chenji;
}
avger=sum/ game083_2.length;
System.out.println("全班的总成绩是"+sum);
System.out.println("全班的平均成绩是"+avger);
}
}算单科成绩的弄出来了。编写多科时候出错。..如果不修改class Student
{
public String name;
public float chenji;
Student(String n2,float c2)
{ name=n2; chenji=c2; }
void setDate(String n2,float c2)
{name=n2;chenji=c2;}
void outputStudent()
{System.out.println(name+"同学的JAVA成绩为"+chenji);}
},用重写的,上面写的应该再哪里修改?谢谢
再加一个方法,输入各科的成绩.
{ public String name;
public float sports,java,english;
Student(String n2,float c2,float c3,float c4)
{ name=n2; java=c2; sports=c3; english=c4; }
void setDate(String n2,float c2,float c3,float c4)
{name=n2;java=c2; sports=c3; english=c4;}
void outputStudent()
{System.out.println(name+"同学的sports成绩为" +sports + "\n同学的java成绩为" +java+ "\n同学的english成绩为" + english;);}
} 这构造方法能通过 ?
{
public static void main(String[]args)
{
float avger=0;
float sum=0;
Student[] game083_2=new Student[8];
System.out.println("请分别输入同学的姓名和sports成绩,java成绩,english成绩");
for(int i=0;i <game083_2.length;i++)
{
Scanner in=new Scanner(System.in);
String n1=in.nextLine();
float c1=in.nextFloat();
game083_2[i]=new Student(n1,c1,c2,c3,c4);
game083_2[i].outputStudent();
}
for (int i=0;i < game083_2.length;i++ )
{ sum=sum+game083_2[i].chenji;
}
avger=sum/ game083_2.length;
System.out.println("全班的总成绩是"+sum);
System.out.println("全班的平均成绩是"+avger);
}
}
这是不可能的,你的student类何来得带4各参数的构造方法