Simulating ATM machines inserting input data into a database

ATM Abstract class

 Public Abstract classATM {Private Doublebalance; PrivateString Idcard; PrivateString password;  PublicString Getidcard () {returnIdcard; }     Public voidSetidcard (String idcard) { This. Idcard =Idcard; }     PublicString GetPassword () {returnpassword; }     Public voidSetPassword (String password) { This. Password =password; }     Public DoubleGetBalance () {returnbalance; }     Public voidSetbalance (Doublebalance) {         This. Balance =balance; }     Public voidbalance () {} Public BooleanCunkuan (Doublecun) {        if(Cun >0) {Balance+=Cun; System.out.println ("Deposit Success!" "); return true; }        Else{System.out.println ("The number of deposits you have entered is incorrect and will exit the service!" "); return false; }    }     Public BooleanQukuan (Doublequ) {        if(Qu <=balance) {Balance-=Qu; System.out.println ("Successful withdrawals!" "); return true; }        Else{System.out.println ("Withdrawals fail and will exit the service!" "); return false; }    }    //add an abstract method of opening an account     Public Abstract voidKaihu ();}

ATM subclass, and implement its method of opening an account

Importjava.sql.Connection;ImportJava.sql.DriverManager;Importjava.sql.SQLException;Importjava.sql.Statement;ImportJava.util.Scanner; Public classChildatmextendsATM {//add an abstract class of account opening method and implement the method@Override Public voidKaihu () {System.out.println ("*********************"); System.out.println ("Your choice is the account opening function"); System.out.println ("Please enter your name:"); CHILDATM CS=NewChildatm (); Cs.setbalance (300); Scanner SC=NewScanner (system.in); String name=Sc.nextline ();  for(inti=1;i>0;i++) {System.out.println ("Please enter your ID number"); Scanner SC1=NewScanner (system.in); String Idcard=Sc1.nextline (); if(Idcard.length () ==18)            {   //determine the number of password entries                 for(i=0;i<3;i++) {System.out.println ("Please enter your password"); String Password=Sc.nextline (); intinput =integer.parseint (password); if(Input >=100000 && input <1000000) {System.out.println ("Successful account Opening");                        Cs.setidcard (Idcard);                        Cs.setpassword (password);  Break; }                    Else{System.out.println ("Please enter a 6-digit password"); } System.out.println ("The password you entered is incorrect, please re-enter" + "your number of entries and" + (2-i)); }                 Break; }            Else{System.out.println ("The ID number is not correct, please continue to enter"); }        }                    intAccount = (int) ((Math.random () *10) *100000); System.out.println ("Your account number is:" +Account ); //Accessing the database//1. Load driver, load the drive class provided by the database                Try{class.forname ("Oracle.jdbc.driver.OracleDriver"); //2. Get the connection to the database: through the management of the database//URL: The address of the database//User: Username//Password: passwordConnection conn=drivermanager.getconnection ("Jdbc:oracle:thin:@127.0.0.1:1521:orcl", "test0816", "laoer123"); System.out.println ("Database connection succeeded"); //manipulating Databases//3. Obtain a statement of the operational databaseStatement st =conn.createstatement (); //4.DML Add Data//Perform an update operation//The return value represents the number of bars returned by the operation value Record//storing input data in a database                                    inti = st.executeupdate ("INSERT into account (a_id,a_name,a_password,a_idcard,a_balance)" + "Values" (' "+account+" ', ' "+ Name+ "', '" +cs.getpassword () + "', '" +cs.getidcard () + "', '" +cs.getbalance () + ")"); System.out.println ("Operation data succeeded, return value =" +i); //turn off freeing resourcesSt.close ();                    Conn.close (); }                                 Catch(ClassNotFoundException |SQLException e)                {E.printstacktrace (); }            }}

ATM Test class

Importjava.sql.Connection;ImportJava.sql.DriverManager;Importjava.sql.SQLException;Importjava.sql.Statement;ImportJava.util.Scanner;ImportUnionPay. CHILDATM; Public classTestbank { Public Static voidMain (string[] args) {System.out.println ("Bank self-service terminal system"); System.out.println ("********************"); System.out.println ("0---------------Account Opening"); System.out.println ("1---------------Query"); System.out.println ("2---------------Deposit"); System.out.println ("3---------------Withdrawals"); System.out.println ("4---------------Exit"); CHILDATM CA=NewChildatm ();  for(inti=1;i>0;i++) {System.out.println ("Please enter the features you want to select"); Scanner SC=NewScanner (system.in); intnum=Sc.nextint (); Switch(num) { Case0: Ca.kaihu ();  Break;
}
}
}
}

Simulating ATM machines inserting input data into a database