In this program about ATM Machine works .The following steps are:
Step1: Get user wish task by the form of number as input from the user.
Step2:According to the input process is started.
Step3: Get another information from user.
Step4: Finally done the user given process.
Step5: If user want to be process again ,It also possible. Otherwise it stop a process.
Explanation:
In this program first perform static block for , To show “Welcome” & “Cardless Transaction”. Then it shows Some list to perform , by the user wish it performs. There are “Showing Available Balance” , “Withdraw” , “Deposit” , “Balance Enquiry” and “Pin Generation” . It asking some information such as “Pin number” , “OTP” like that . After finishing user given task , it gives option to perform any other task .If user want to perform task “Press 6” and otherwise “Press 7” to exit.
package patterns1;
import java.util.Scanner;
public class ATM_Machine {
static
{
System.out.println("Welcome");
System.out.println("Insert Your Card");
System.out.println("Cardless Transaction");
System.out.println("Do you want Cardless Transaction press 5");
}
public static void main(String[] args) {
int balance = 100000, withdraw, deposit;
//create scanner class object to get choice of user
Scanner sc = new Scanner(System.in);
while(true)
{
System.out.println("Available is "+balance);
System.out.println("Press 1 for Withdraw");
System.out.println("Press 2 for Deposit");
System.out.println("Press 3 for Balance enquiry");
System.out.println("Press 4 for Pin generation");
System.out.print("Press the what do you want to perform:");
//get choice from user
int choice = sc.nextInt();
int num1;
int num2;
int withdraw1;
switch(choice)
{
case 1:
System.out.print("Enter money to be withdrawn:");
withdraw = sc.nextInt();
System.out.println("Enter your 4 digit Pin:");
int Pin_Number = sc.nextInt();
if(balance >= withdraw)
{
//remove the withdrawl amount from the total balance
balance = balance - withdraw;
System.out.println("Please Enter your Account if Savings Account enter 1 or Current Account enter 2 ");
int account_type = sc.nextInt();
if(account_type==1) {
System.out.println(" Processing please wait ");
System.out.println("Please collect your money");
}
else {
System.out.println(" Processing please wait ");
System.out.println("Please collect your money");
}
}
else
{
//show custom error message
System.out.println("Insufficient Balance");
}
System.out.println("");
break;
case 2:
System.out.print("Enter money to be deposited:");
deposit = sc.nextInt();
System.out.println("Enter your 4 digit Pin:");
Pin_Number = sc.nextInt();
balance = balance + deposit;
System.out.println("Your Money has been successfully depsited");
System.out.println("");
break;
case 3:
System.out.println("Enter your 4 digit Pin:");
Pin_Number = sc.nextInt();
//displaying the total balance of the user
System.out.println("Balance : "+balance);
System.out.println("");
break;
case 4:
System.out.println("Enter your old pin number : ");
num1 = sc.nextInt();
System.out.println("Enter your new pin number : ");
num2=sc.nextInt();
System.out.println("Enter your confirm new pin number : ");
int num3 = sc.nextInt();
if(num2==num3) {
System.out.println("Enter your OTP number : ");
}
else {
System.out.println("Please check confirm pin number ");
}
sc.nextLine();
int num4 = sc.nextInt();
if(num4>=4) {
System.out.println(" Processing please wait ");
System.out.println(" Your Pin is Successfully Generated ");
}
else {
System.out.println(" Sorry Try Again Later ");
}
break;
case 5:
System.out.println("Enter your Account_number");
sc.nextLine();
String no=sc.next();
int length=no.length();
if((length==18)||(length==16)||(length==15)||(length==14)||(length==13)||(length==12)||(length==11)||(length==10)||(length==8))
{
System.out.println("processing please wait");
}
System.out.println("Enter your OTP Number");
String OTP_Number = sc.next();
int length1=OTP_Number.length();
if((length1==4)||(length1==6)) {
System.out.println("processing please wait");
System.out.println("your money has been Sussefully deposited");
}
else {
System.out.println("Check your OTP");
}
System.out.println("");
break;
}
System.out.println("Do you want to continue your Transaction ,Yes means press 6 or No means press 7 ");
int yes = sc.nextInt();
if(yes==6) {
continue;
}
System.out.println("Thankyou For Your Transaction!!");
break;
}
}
}
Output:
Welcome
Insert Your Card
Cardless Transaction
Do you want Cardless Transaction press 5
Available is 100000
Press 1 for Withdraw
Press 2 for Deposit
Press 3 for Balance enquiry
Press 4 for Pin generation
Press the what do you want to perform:1
Enter money to be withdrawn:4000
Enter your 4 digit Pin:
5678
Please Enter your Account if Savings Account enter 1 or Current Account enter 2
1
Processing please wait
Please collect your money
Do you want to continue your Transaction ,Yes means press 6 or No means press 7
6
Available is 96000
Press 1 for Withdraw
Press 2 for Deposit
Press 3 for Balance enquiry
Press 4 for Pin generation
Press the what do you want to perform:2
Enter money to be deposited:7900
Enter your 4 digit Pin:
5678
Your Money has been successfully depsited
Do you want to continue your Transaction ,Yes means press 6 or No means press 7
6
Available is 103900
Press 1 for Withdraw
Press 2 for Deposit
Press 3 for Balance enquiry
Press 4 for Pin generation
Press the what do you want to perform:3
Enter your 4 digit Pin:
5678
Balance : 103900
Do you want to continue your Transaction ,Yes means press 6 or No means press 7
6
Available is 103900
Press 1 for Withdraw
Press 2 for Deposit
Press 3 for Balance enquiry
Press 4 for Pin generation
Press the what do you want to perform:4
Enter your old pin number :
5678
Enter your new pin number :
8903
Enter your confirm new pin number :
8903
Enter your OTP number :
5637
Processing please wait
Your Pin is Successfully Generated
Do you want to continue your Transaction ,Yes means press 6 or No means press 7
6
Available is 103900
Press 1 for Withdraw
Press 2 for Deposit
Press 3 for Balance enquiry
Press 4 for Pin generation
Press the what do you want to perform:5
Enter your Account_number
3456789012
processing please wait
Enter your OTP Number
6789
processing please wait
your money has been Sussefully deposited
Do you want to continue your Transaction ,Yes means press 6 or No means press 7
7
Thankyou For Your Transaction!!
sankaa 
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