帮我看看这段代码...!
package   marks;
import   java.io.*;

public   class   persons   {
public   static   void   main(String[]   args)
{
try
{
String   head   =   "Name,ID,DS,DB ";
byte[]   c   =   new   byte[40];
c   =   head.getBytes();
System.out.println(c);

FileOutputStream   fo   =   new   FileOutputStream( "c:\\student.txt ");
byte   []   name   =   new   byte[40];
byte   []   id   =   new   byte[4];
byte   []   ds   =   new   byte[3];
byte   []   db   =   new   byte[3];
System.in.read(name);
System.in.read(id);
System.in.read(ds);
System.in.read(db);

String   sName   =   new   String(name);
String   sId   =   new   String(id);
String   sDs   =   new   String(ds);
String   sDb   =   new   String(db);

String   record   =   "\n "+sName+ ", "+sId+ ", "+sDs+ ", "+sDb;
c   =   record.getBytes();
fo.write(c);
fo.close();
}
catch(FileNotFoundException   fe)
{
System.out.println( "File   Not   Found ");
}
catch(IOException   ie)
{
System.out.println( "IO   Exception ");
}
}
}


执行程序没有错.但是我输入数据以后,输入的信息没有保存到文本文件里面,
请高手帮我看看哪里有问题,

------解决方案--------------------
import java.io.*;

public class Demo {
public static void main(String[] args) {
try {
String head = "Name,ID,DS,DB ";
byte[] c = new byte[40];
c = head.getBytes();
System.out.println(c);

BufferedWriter fo = new BufferedWriter(new FileWriter( "d:\\student.txt "));
String[] info = new String[4];
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
for (int i = 0; i < info.length; i++) {
info[i] = reader.readLine();
}
String record = " ";
for(String s : info) {
record += s;
}
fo.write(record);
fo.close();
} catch (FileNotFoundException fe) {
System.out.println( "File Not Found ");
} catch (IOException ie) {
System.out.println( "IO Exception ");
}
}
}