public static Scanner scanner = new Scanner(System.in);
public static Bank newBank = new Bank("BMCE");

public static void addNewCostumer(){
System.out.println("Choose a branch :");
String branchChoosed = scanner.nextLine();
Branches branches = newBank.queryBranch(branchChoosed);
if(branches == null){
    System.out.println("There are a problem, or you are entered a wrong name of branch");

}
else{
    System.out.println("Enter the name costumer :");
    String nameOfCostumer = scanner.nextLine();
    System.out.println("Enter the transaction number :");
    double transactions = scanner.nextDouble();
    scanner.nextLine();
    if(newBank.addNewCostumer(branches,nameOfCostumer,transactions)){
        System.out.println("The costumer was created in branch name :"+branches.getNameOfBranch());


    }else{

        System.out.println("Sorry you dindn't create a costumer in "+branches.getNameOfBranch()+" Try again please :)");

    }

}

private String name;
private ArrayList<Branches> branchesArrayList = new ArrayList<>();

public boolean addNewCostumer(Branches nameOfExistingBranch,String nameOfNewCostumer,double newTransaction){
int position = findBranch(nameOfExistingBranch);


if(position<0){
    System.out.println("There is not branch with this name");
    return false;
}
else{
    if(this.branchesArrayList.get(position).findCostumer(nameOfNewCostumer)>=0){
        System.out.println("You have already an existing costumer with that name");
        return false;
    }
    else{

        this.branchesArrayList.get(position).addNewCostumer(nameOfNewCostumer,newTransaction);
        return true;

    }

}

}

public int findBranch(Branches branches){
int position = this.branchesArrayList.indexOf(branches);
if(position>=0){

    return position;

}
else
    return -1;
}