- import java.io.*;
- import java.util.*;
- //定义学生类
- class Student implements Comparable<Student>
- {
- private String name ;
- private int ma,cn,en;
- private int sum;
- Student (String name,int ma,int cn,int en )
- {
- this.name=name;
- this.ma=ma;
- this.cn=cn;
- this.en=en;
- sum=ma+cn+en;
- }
- public int compareTo(Student s )
- {
- int num = new Integer(this.sum).compareTo( new Integer (s.sum));
- if(num==0)
- return this.name.compareTo(s.name);
- return num;
- }
- public String getName()
- {
- return name;
- }
- public int getSum()
- {
- return sum;
- }
- public int hashCode()
- {
- return this.name.hashCode()+sum*78;
- }
- public boolean equals (Object obj )
- {
- if(!(obj instanceof Student))
- throw new ClassCastException("类型不匹配");
- Student s = (Student ) obj;
- return this.name.equals(s.name) && this.sum == s.sum ;
- }
- public String toString ()
- {
- return "Student ["+this.name+","+this.ma+","+this.cn+","+this.en+"]";
- }
- }
- class StudentInfoTool
- {
- public static Set<Student> getStudents () throws Exception
- {
- BufferedReader bufr =new BufferedReader ( new InputStreamReader (System.in));
- String line = null;
- Set<Student> stus = new TreeSet<Student> ();
- while((line = bufr.readLine())!=null)
- {
- if("over ".equals(line))
- break;
- String [] info =line.split(",");
- Student stu = new Student (info[0],Integer.parseInt(info[1]),Integer.parseInt(info[2]),Integer.parseInt(info[3]));
- stus.add(stu);
- }
- bufr.close();
- return stus;
- }
- public static void writeToFile(Set<Student> stus) throws Exception
- {
-
- BufferedWriter bufw = new BufferedWriter ( new FileWriter ("stuentinfo.txt"));
- for(Student stu : stus )
- {
- bufw.write(stu.toString ());
- bufw.write(stu.getSum());
- bufw.newLine();
- bufw.flush();
- }
- bufw.close();
- }
- }
- class StudentInfoTest
- {
- public static void main(String[] args) throws Exception
- {
- Set <Student> set= StudentInfoTool.getStudents ();
- StudentInfoTool.writeToFile(set);
- }
- }
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