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标题:
大侠帮忙给看一下 实在是 看不出来 哪里有问题
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作者:
学习代码
时间:
2014-4-9 18:39
标题:
大侠帮忙给看一下 实在是 看不出来 哪里有问题
/*
有五个学生,每个学生有三门课的成绩,
从键盘输入以上数据(包括姓名,三门课的成绩),
输入的格式,如;zhangsan,30,40,60,计算出总成绩,
并把学生的信息和计算出的总分数高低顺序存放在磁盘文件“stud.txt”中
*/
import java.io.*;
import java.util.*;
class Student implements Comparable<Student>
{
private String name;
private int zongfen;
private int en,end,end1;
Student(String name,int en,int end ,int end1)
{
this.name= name;
this.en = en;
this.end = end;
this.end1 = end1;
zongfen = en + end +end1;
}
public int compareTo(Student s)
{
int num = new Integer(this.zongfen).compareTo(new Integer(s.zongfen));
if(num==0)
return this.name.compareTo(s.name);
return num;
}
public int hashCode()
{
return 60;
}
public boolean equals(Object obj )
{
if(!(obj instanceof Student))
throw new RuntimeException("类型不匹配");
Student s= (Student)obj;
return this.name.equals(s.name) && this.zongfen==s.zongfen;
}
public String getName()
{
return this.name;
}
public int getFen()
{
return zongfen;
}
}
class StudentTool
{
public static Set<Student> show()throws IOException
{
BufferedReader br =
new BufferedReader(new InputStreamReader(System.in));
Set<Student> set= new TreeSet<Student>();
String len= null;
while((len = br.readLine())!=null)
{
if("over".equals(len))
break;
String[] arr = len.split(",");
Student s= new Student(arr[0],Integer.parseInt(arr[1])
,Integer.parseInt(arr[2])
,Integer.parseInt(arr[3]));
set.add(s);
}
br.close();
return set;
}
public static void run(Set<Student> set)throws IOException
{
BufferedWriter bw = new BufferedWriter(new FileWriter("stu.txt"));
for(Student se : set)
{
bw.write(se.getName());
bw.write(se.getFen());
bw.newLine();
bw.flush();
}
bw.close();
}
}
class IOTestDemo
{
public static void main(String[] args) throws IOException
{
Set<Student> set= StudentTool.show();
StudentTool.run(set);
}
}
复制代码
作者:
yanzhendong
时间:
2014-4-9 18:57
75行要写完整路径名:BufferedWriter bw = new BufferedWriter(new FileWriter("D:\\stu.txt"));79行要类型转换 bw.write(Integer.toString(se.getFen()));
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