public class Student implements Comparable 
{
private String userid;
private String username;
private int mScore;
private int eScore;
private int cScore;
private int total;
public Student(String userid, String username, int mscore, int escore,
int cscore) {
super();
this.userid = userid;
this.username = username;
mScore = mscore;
eScore = escore;
cScore = cscore;
}
/** *//**
* @return the userid
*/
public String getUserid() {
return userid;
}
/** *//**
* @param userid the userid to set
*/
public void setUserid(String userid) {
this.userid = userid;
}
/** *//**
* @return the username
*/
public String getUsername() {
return username;
}
/** *//**
* @param username the username to set
*/
public void setUsername(String username) {
this.username = username;
}
/** *//**
* @return the mScore
*/
public int getMScore() {
return mScore;
}
/** *//**
* @param score the mScore to set
*/
public void setMScore(int score) {
mScore = score;
}
/** *//**
* @return the eScore
*/
public int getEScore() {
return eScore;
}
/** *//**
* @param score the eScore to set
*/
public void setEScore(int score) {
eScore = score;
}
/** *//**
* @return the cScore
*/
public int getCScore() {
return cScore;
}
/** *//**
* @param score the cScore to set
*/
public void setCScore(int score) {
cScore = score;
}
public Student() {
super();
// TODO Auto-generated constructor stub
}
public int compareTo(Object obj) {
if(this.getTotal()>((Student)obj).getTotal()){
return 0;
}else{
return 1;
}
}
/** *//**
* @return the total
*/
public int getTotal() {
return total;
}
/** *//**
* @param total the total to set
*/
public void setTotal(int total) {
this.total = total;
}
/**//* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(this.getUserid()+" ");
sb.append(this.getUsername()+"");
sb.append(this.getMScore()+" ");
sb.append(this.getEScore()+" ");
sb.append(this.getCScore()+" ");
sb.append(this.getTotal());
return sb.toString();
}
}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class ReadFileUtil {
public static List<Student> ReaderFileUtil(String filepathstring) {
BufferedReader in=null;
List<Student> students = new ArrayList<Student>();
try {
in = new BufferedReader(new FileReader(filepathstring));
String line = null;
while ((line = in.readLine()) != null) {
String[] information = new String[5];
information = line.split(",");
Student temp = new Student();
temp.setUserid(information[0]);
temp.setUsername(information[1]);
temp.setMScore(Integer.parseInt(information[2]));
temp.setEScore(Integer.parseInt(information[3]));
temp.setCScore(Integer.parseInt(information[4]));
students.add(temp);
}
} catch (Exception e) {
e.printStackTrace();
} finally{
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return students;
}
public static List<Student> getTotals(List<?> list){
int total=0;
List<Student> exchangeStudent=new ArrayList<Student>();
//注意這個地方的list是傳過來的參數！！！
Iterator<?> iter=list.iterator();
while(iter.hasNext()){
Student stu=(Student)iter.next();
total=stu.getCScore()+stu.getEScore()+stu.getMScore();
stu.setTotal(total);
exchangeStudent.add(stu);
}
return exchangeStudent;
}
public static void writeFileProperty(List<Student> list,String filepathstring){
BufferedWriter out = null;
try {
out = new BufferedWriter(new FileWriter(filepathstring));
//這個地方傳的是一個list
Iterator it=list.iterator();
while(it.hasNext()){
Student stu=(Student) it.next();
out.write(stu.getUserid()+","+stu.getUsername()+","+stu.getTotal()+";");//把你想寫入到文件里的內容寫到文件里去
out.newLine();//文件中的換行
}
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
public class ReaderFileProperty {
/** *//**
* @param args
*/
public static void main(String[] args) {
BufferedReader in = null;
Collection students = new ArrayList();
try {
in = new BufferedReader(new FileReader("input.txt"));
String line = null;
while ((line = in.readLine()) != null) {
String[] information = new String[5];
information = line.split(",");
Student temp = new Student();
temp.setUserid(information[0]);
temp.setUsername(information[1]);
temp.setMScore(Integer.parseInt(information[2]));
temp.setEScore(Integer.parseInt(information[3]));
temp.setCScore(Integer.parseInt(information[4]));
temp.setTotal(temp.getCScore()+temp.getEScore()+temp.getMScore());
students.add(temp);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
Iterator it = students.iterator();
for(Student student: (Collection<Student>)students){
// System.out.println(student);
System.out.println(student.getUsername());
}
}
}
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
public class TestFile {
/** *//**
* @param args
*/
public static void main(String[] args) {
String filepath="input.txt";
String filepath2="f:\\some.txt";
List list=com.yuer.txt.ReadFileUtil.ReaderFileUtil(filepath);
List resultList=com.yuer.txt.ReadFileUtil.getTotals(list);
Iterator iter=resultList.iterator();
while(iter.hasNext()){
// System.out.println(iter.next());
Student stu=(Student) iter.next();
System.out.println("我的姓名："+stu.getUsername()+";"+",我的語文成績："+stu.getCScore()+",我的英語成績："+stu.getEScore()+",我的數學成績："+stu.getMScore()+",我的總分是："+stu.getTotal());
}
Collections.sort(resultList);
Iterator it=resultList.iterator();
while(it.hasNext()){
Student stu=(Student) it.next();
System.out.println("我的姓名："+stu.getUsername()+";"+",我的語文成績："+stu.getCScore()+",我的英語成績："+stu.getEScore()+",我的數學成績："+stu.getMScore()+",我的總分是："+stu.getTotal());
}
com.yuer.txt.ReadFileUtil.writeFileProperty(resultList, "f:\\output.txt");
}
}
posted on 2009-03-10 17:43
Johnhe 閱讀(143)
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