ATM shows up in an object-oriented way

This is the functional implementation section.

Import Java.util.Scanner;

ATM machine
public class Atmmachine {
User Information
Private UserInfo user;
Cash
private int cash;
Maximum cash capacity
public final int max_cash = 200000;
Access limit
public final int get_set_max = 2000;

Public Atmmachine () {
Pre-loading user information
This.user = new UserInfo ("J124", "123456", 500);
This.cash = 100000;
}

Run
public void Run () {
This.welcome ();
Boolean flag = This.login ();
if (flag) {
System.out.println ("Welcome, user" + this.user.getUsername () + "! ");
while (true) {
int choice = This.choicemenu ();
Switch (choice) {
Case 1:
This.query ();
Break
Case 2:
This.storemoney ();
Break
Case 3:
This.getmoney ();
Break
Case 4:
This.changepwd ();
Break
Case 5:
This.exit ();
Break
Default
System.out.println ("Sorry, no this option!") ");
Break
}
}
} else {
System.out.println ("Your account is frozen! Please go to the counter to handle! ");
}
}

Show Welcome
private void Welcome () {
System.out.println ("******************************");
System.out.println ("********* Huan * * * * * * recorded *********");
System.out.println ("******************************");
System.out.println ("********* Love to Save Bank atm*********");
System.out.println ("******************************");
System.out.println ("*****************version1.0***");
}

Login
Private Boolean login () {

for (int i = 0; i < 3; i++) {
Scanner scan = new Scanner (system.in);
System.out.println ("Please enter your account number:");
String InputName = Scan.next ();
System.out.println ("Please enter your password:");
String inputpwd = Scan.next ();
if (Inputname.equals (This.user.getUsername ())
&& inputpwd.equals (This.user.getPassword ())) {
return true;
} else {
SYSTEM.OUT.PRINTLN ("Wrong input! You also have "+ (2-i) +" Second Chance ");
}
}
return false;
}

Select Menu
private int Choicemenu () {
int choice = 0;
Scanner scan = new Scanner (system.in);
SYSTEM.OUT.PRINTLN ("Please select the action you want to perform:");
System.out.println ("1, Enquiry, 2, deposit, 3, withdrawal, 4, change of password; 5, exit");
Choice = Scan.nextint ();
return choice;
}

Check balance
private void query () {
Directly displays the account property value in the User object
System.out.println ("Your account's current balance is:" +this.user.getaccount ());

}

Saving
Private double Storemoney () {
1. Receiving user input
2, judgment--cannot be 0, cannot be negative, must be 100 multiples, cannot exceed the access limit, cannot exceed the cash capacity--gives the hint
3, judging through-plus cash, plus balance
Double sum=0; Sum of money and balance deposited by the user
while (true) {
Scanner s=new Scanner (system.in);
System.out.println ("Please enter the amount of money stored:");
int Cun=s.nextint ();
if (cun%100!=0) {
System.out.println ("The deposited money must be a multiple of 100, please re-enter:"); continue;
}
else if (cun<=0) {
SYSTEM.OUT.PRINTLN ("You entered the money in error, please re-enter"); continue;
}
else if (cun>this. Get_set_max) {
System.out.println ("Only a maximum of 2000 yuan can be deposited in a single time, please re-enter"); continue;
}
else{
System.out.println ("Deposit success, your balance is" + (Cun+this.user.getaccount ()));
Sum=cun+this.user.getaccount ();
return sum;
} (there is a problem here, no savings after the balance changes)
}
}
Withdrawal
private void Getmoney () {
while (true) {
Scanner s=new Scanner (system.in);
System.out.println ("Please enter the amount of money to be taken:");
int Qu=s.nextint ();
if (This.user.getAccount ()-qu<0) {
System.out.println ("Your account balance is insufficient, please re-enter"); continue;
}
else if (qu%100!=0) {
SYSTEM.OUT.PRINTLN ("You entered the wrong, must be a multiple of 100"); continue;
}
else if (qu>this. Get_set_max) {
System.out.println ("One-time withdrawal of up to 2000 yuan, please re-enter"); continue;
}
else{
System.out.println ("Withdrawal success, withdrawals" +qu+ "Yuan");
System.out.println ("Current balance of account" + (This.user.getAccount ()-qu));
}
} (This is also the problem above, there is no change in balance after the money is taken)
}
Change Password
private void Changepwd () {
while (true) {
Scanner s=new Scanner (system.in);
System.out.println ("Please enter the original password");
String Psw=s.next ();
if (Psw.equals (This.user.getPassword ())) {
Scanner w=new Scanner (system.in);
System.out.println ("Please enter the original password again");
String Psw1=w.next ();
if (Psw1.equals (This.user.getPassword ())) {
System.out.println ("Please enter a new password");
Scanner x=new Scanner (system.in);
String Xin=x.next ();
System.out.print ("Successful password modification");
}
else{
SYSTEM.OUT.PRINTLN ("Password inconsistent, please re-enter");
}
}

else{
System.out.print ("The password you entered is inconsistent with the original password, please re-enter");
}
}
}

Exit
private void exit () {
SYSTEM.OUT.PRINTLN ("Thank you for your use!") Please accept your card! ");
System.exit (0);
}

}

ATM shows up in an object-oriented way