public class Customer {
    private String first_name;
    private String last_name;
    private String email_add;
    private  String home_add;
    private String telephone;
    
    
   public Customer(String first_name, String last_name, String email_add, String home_add, String telephone){
        
        
        this.first_name = first_name;
        this.last_name = last_name;
        this.email_add = email_add;
        this.home_add = home_add;
        this.telephone = telephone;
    }

    
    public String getfirst_name(){
        return first_name;
    }
    
     public String getlast_name(){
         return last_name;
     }
     
     public String getemail_add(){
         return email_add;
     }
     
     public String gethome_add(){
         return home_add;
     }
     
     public String gettelephone(){
         return telephone;
     }
     
     public void setfirst_name(String first_name){
         this.first_name=first_name;
     }
     
     public void setlast_name(String last_name){
         this.last_name=last_name;
     }
     
     public void setemail_add(String email_add){
         this.email_add=email_add;
     }
     
     public void settelephone(String telephone){
         this.telephone=telephone;
     }
     
    @Override
     public String toString(){
         return "Customer details"+ " First name of the customer :" + this.first_name+","+ "Last name of the customer:" + this.last_name+","+
                 "Home addres of the customer: "+ this.home_add+","+ "Email address of the customer: "+this.email_add+
                 ","+ "The customer telephone contact: "+ this.telephone;
     }
}

public static void main(String[]args){
        Scanner keyin = new Scanner(System.in);
        
        
        char type;
        boolean quit;
        boolean isContains;
        String first_name;
        String last_name;
        String acctnum;
        double bal=0;
        float interestRate;
        String email_add;
        String telephone;
        
        Customer customer = new Customer();  the error is right here it is saying to constructor in the customer class when there is already a constructor in the customer class and another error is constructor Customer in class Customer cannot be applied to given types;
        customer.getfirst_name();
        customer.getlast_name();
        customer.gethome_add();
        customer.getemail_add();
        customer.gettelephone();
        
       
        
        System.out.println("\n "+ "Please select one of the following opeitons");
        System.out.println("| o-To Open Account  |");
        System.out.println("| d-To Make a deposit");
        System.out.println("| w-To Make a Withdrawal");
        System.out.println("| i-To Pay Interest");
        System.out.println("| t-To View the Transation");
        System.out.println("| q-To quit");
        type = keyin.next().trim().toUpperCase().toLowerCase().charAt(0);
        
        while (true){
           
            if(type  == 'o'){
             System.out.println("Please enter the trasaction type /(D to deposit, W to withdraw, Q to quit)");
              type = keyin.next().toUpperCase().toLowerCase().charAt(0);// tell the user to use either the upper case or lower case
              
                
                switch (type) {
                    case 's':
                        System.out.println("Enter the account holder first name");
                        first_name = keyin.next();
                        System.out.println("Please enter a saving account number");
                        acctnum = keyin.next();
                        System.out.println("Please enter a starting balance $"+bal);
                        bal = keyin.nextDouble();
                        System.out.println("Please enter your current interest rate");
                        interestRate = keyin.nextFloat();
                        break;
                    case 'c':
                        System.out.println("Please enter a chequing account number:");
                        acctnum=keyin.next();
                        System.out.println("Enter a starting balance:");
                        bal=keyin.nextDouble();
                        break;
                    case 'd':
                        System.out.println("Please enter the account number you wish to make a deposit to");
                        acctnum = keyin.next();
                       
                       
                        
                        break;
                    default:
                        break;
                        
                     
                }
            }
        }
        
    } 
          
          
  }