Java Simple Bank Account Class And Simple Functionality

	package bankmanagment;
	import java.util.*;
	/**
	*
	* @author Shohan
	* Bank Account Class
	* // Main ClassName -- "Main"
	*/
	class Account{
	String name,acc_type;
	int Acc_num,Acc_Balance;
	Account(){
	}
	Account(String n,int acc_num,int b,String a_t){
	name=n;
	Acc_num=acc_num;
	Acc_Balance=b;
	acc_type=a_t;
	}
	} // end class
	class create_account extends Account{
	create_account(String n,int acc_num,int b,String a_t){ // pass name and account type
	name=n;
	Acc_num=acc_num;
	Acc_Balance=b;
	acc_type=a_t;
	}
	create_account(){
	super();
	}
	void insert(String n,int acc_num,String a_t){ // input user name, account number and type
	name=n;
	acc_type=a_t;
	Acc_num=acc_num; // generate random number
	Acc_Balance=0;
	}
	void display_details(){
	System.out.println("Depositor Name :" +name);
	System.out.println("Account Number : "+Acc_num);
	System.out.println("Account Balance : "+Acc_Balance);
	System.out.println("Account Type : "+acc_type);
	}
	void deposite(int acc_num,int money){
	Acc_Balance=money;
	}
	int withdraw(int withd){
	Acc_Balance=Acc_Balance-withd;
	return Acc_Balance;
	}
	} // end class
	public class Main {
	public static void main(String args[]){
	String user_name=null,type;
	type = null;
	int balance=0,tmp=0;
	int withd=0,cb=0;
	// to generate Random Account Number
	int aNumber = 0;
	aNumber = (int)((Math.random() * 9000)+1000);
	create_account user = new create_account("user",0,0,"savings"); // initilaize -- name,acc_number,Balance,Type
	Scanner in = new Scanner(System.in);
	Scanner strng=new Scanner(System.in);
	int userChoice;
	boolean quit = false;
	do {
	System.out.println("1. Create Account");
	System.out.println("2. Deposit money");
	System.out.println("3. Withdraw money");
	System.out.println("4. Check balance");
	System.out.println("5. Display Account Details");
	System.out.println("0. to quit: \n");
	System.out.print("Enter Your Choice : ");
	userChoice = in.nextInt();
	switch (userChoice) {
	case 1:
	System.out.print("Enter your Name : ");
	user_name=strng.nextLine();
	System.out.print("Enter Accout Type : ");
	type=in.next();
	user.insert(user_name, aNumber, type); // inserted
	System.out.println("\n\tYour Account Details\n\tDont Forget Account Number\n");
	System.out.println("**************************");
	user.display_details();
	break;
	case 2: // deposite
	System.out.print("Enter your account Number : ");
	tmp=in.nextInt();
	if(tmp==user.Acc_num){
	System.out.print("Enter Amount Of Money : ");
	balance=in.nextInt();
	user.Acc_Balance=balance;
	System.out.println("\t Successfully Deposited.");
	}
	else
	System.out.println("Wrong Accoount Number.");
	break;
	case 3: // withdraw money
	System.out.print("Enter your account Number : ");
	tmp=in.nextInt();
	if(tmp==user.Acc_num){
	if(user.Acc_Balance==0)
	System.out.print("Your Account is Empty.");
	else{
	System.out.print("Enter Amout Of Money : ");
	withd=in.nextInt();
	if(withd>user.Acc_Balance){
	System.out.print("Enter Valid Amout of Money : ");
	withd=in.nextInt();
	}
	else
	cb= user.withdraw(withd);
	System.out.println("Your Current Balance : "+cb);
	}
	}
	else
	System.out.println("Wrong Accoount Number.");
	break;
	case 4: // check balance
	System.out.print("Enter your Account Number : ");
	tmp=in.nextInt();
	if(tmp==user.Acc_num){
	System.out.println("Your Current Balance : "+user.Acc_Balance);
	}
	else
	System.out.println("Wrong Accoount Number.");
	break;
	case 5: // display all info
	System.out.print("Enter your Account Number :");
	tmp=in.nextInt();
	if(tmp==user.Acc_num){
	user.display_details();
	}else
	System.out.println("Wrong Accoount Number.");
	break;
	case 0:
	quit = true;
	break;
	default:
	System.out.println("Wrong Choice.");
	break;
	}
	System.out.println("\n");
	} while (!quit);
	System.out.println("Thanks !");
	} // end main function
	} // end mian class

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