Java7

import java.util.*;
import java.io.*;
public class test {
        

    public test() {
    }
    
       public static void main(String[] args) {
        // TODO code application logic here
        try{
        	Scanner sc = new Scanner(new File("C:/Users/Administrator/Desktop/11.txt"));//导入文件内容
        	while(sc.hasNextLine()){
        		String line = sc.nextLine().trim();//读取一行数据并删除空格
         		student st = new student();
         		String[] xx = line.split("\s+");//按照空格分割字符串
         		st.id = xx[0];
         		st.name = xx[1];
         		st.mat = Integer.parseInt(xx[2]);  		
         		st.english = Integer.parseInt(xx[3]);       		
         		st.computer = Integer.parseInt(xx[4]);//赋值 
         		st.display();      		
        	}

        	
        }
        catch (Exception ex){
        }
    }
}
class student{
	String id;//学号
	String name;//姓名
	int mat;//数学成绩
	int english;//英语成绩
	int computer;//计算机成绩
	student(){}
	int sum(){
		return mat+english+computer;
	}
	double average(){
		return (mat+english+computer)/3.0;
	}
	void display()
	{
		String disp = id + "t" + name + "t" + mat + "t" + english + "t" + computer + "t" + sum() + "t" + average() + "t";
		System.out.println (disp);
	}
}