急需大哥们帮忙

Question

要求都不清楚，而且这种事应该自己做才对

Answer 1

请帮我加上数组和文件。谢谢
import java.io.*;
import javax.swing.*;
   public class Tutor3_8{
   public static void main(String args[])
     {
        readMyFile();
                     
          }
   public static void readMyFile(){
      String record = null;
      int recCount = 0;
      try{
          FileReader fr = new FileReader("chen.txt");
          BufferedReader br = new BufferedReader(fr);
          record = new String();
          while((record = br.readLine())!=null){
                recCount++;
                System.out.println(recCount+":"+record);
          }
            br.close();
            fr.close();
          }catch(IOException e){
             System.out.println("Uh oh,got an IOException error!");
                  }
               }
           
     String username,
            password;               
     username = JOptionPane.showInputDialog("Enter username by user");
     password = JOptionPane.showInputDialog("Enter password by user");
        if((compareTo password = 0 && 123456 = 0)&&(compareTo username = 0 && 陈达旺 = 0)){
            for(int i;i<3;i++){
              JOptionPane.showMessageDialog(null,"Password isn't right!try again");
                  }
          }
           while(ture){
                   switch{
                          case draw;
                               doDraw;
                               break;
                          case deposit;
                               doDeposit;
                               break;
                          case query;
                               doQuery;
                               break;
                          case quit;
                               break;
                    }
              }
       }
                     public static void doDraw(String user){
                          String Drawer;
                                 Drawer = JOptionPane.showInputDialog("Enter username");
                          Int draw = Integer.parseInt(Drawer);
                    public static void  deposit(String user){
                          String Depositor;
                                 Depositor = JOption.showInputDialog("Enter username");
                          Int deposit = Integer.parseInt(Depositor);
                    public static void doQuery(String user){
                          String Queryor;
                                 Queryor = JOption.showIntputDialog("Enter username");
                          Int query = Integer.parseInt(Queryor);
                 }
            }
        }
    } 
           
                                       

Answer 2

该程序是写了银行的操作。我的程序缺少了数组请帮忙吧！！！真的很急啊！！！！！！很急啊

Answer 3

缺少什么数组，是程序有问题吗

Answer 4

把大概情况说一下，数组是做何用