请问一下这个程序要怎么改啊，现在这个代码有异常。。。

Question

public class Employee { private String name; private int age; private int wage; public Employee(){} public Employee(String name,int age,int wage){  this.name=name;  this.age=age;  this.wage=wage; } public String getName(){  return name; } public int getAge(){  return age; } public int getWage(){  return wage; } public String toString(){  return name+","+age+","+wage; }}public class EmployeeList { private ArrayList<Employee>arr; public EmployeeList(){  arr=new ArrayList<Employee>(); } public void getEmployees(InputStream stream){  DataInputStream in=new DataInputStream(stream);  char ch;  String name="";  try {    while((ch=in.readChar())!=','&&ch!=-1)     name+=ch;    arr.add(new Employee(name,in.readInt(),in.readInt()));    //System.out.println(arr);    name="";  } catch (IOException e) {   e.printStackTrace();   }  } public ArrayList getArr(){  return arr; }}public class TestApp { public static void main(String []args)throws IOException{  EmployeeList employeelist=new EmployeeList();  FileInputStream fin=new FileInputStream("d:\\0001\\student.txt");  employeelist.getEmployees(fin);  System.out.println(employeelist.getArr()); } }

Answer 1

可以把错误贴上来，方便分析