I'm not a programmer and this is an assignment question. I wrote the program and its working fine but can't print the output in this specific format. Here down is my assignment:

• How to calculate discount

• How to display customer table

  This is the code till now

        //pgm to find discount and amt
    import java.util.*;
    public class assg1
    {
        public void main()
        {
            int d,dis,t;
            Scanner sc=new Scanner(System.in);
            System.out.print("Enter the no. of customers: ");
            int x=sc.nextInt();
            {
                int i;
                for(i=1;;i  )
                {
                    System.out.print("Enter your name: ");
                    String a=sc.next();
                    System.out.println("Ticket charge: ");
                    int n=sc.nextInt();
                    if(n<25001)
                    d=2;
                    else if(n>=25001||n<=35000)
                    d=10;
                    else if(n>=35001||n<=55000)
                    d=12;
                    else if(n>=55001||n<=70000)
                    d=16;
                    else
                    d=18;
                    dis=d*n/100;
                    t=n-dis;
                    if(i==x)
                    break;
                }
            }
        }
    }

I did till this but dont know what to do in the part after t = n - dis. I tried using \t but the order of the output turns out differently everytime. If anyone has suggestions please let me know.

CodePudding user response：

The tricky bit is printing this so the title line and the entry are aligned. You can use System.out.printf with enough padding. One way to do it:

System.out.printf("%-5s %-20s %-15s %-15s %-15s%n", "Sl.No", "Name", "Ticket Charges", "Discount", "Net Amount");
System.out.printf("%-5d %-20s %-15d %-15d %-15d%n", i, a, n, d, t);

Explanation:

• "%-20s" prints a string with at least 20 characters. If the string is shorter, it is padded with spaces to the right.
• "%-20d" same, but for an integer.

This will print entries like the following:

Sl.No Name                 Ticket Charges  Discount        Net Amount     
1     Prasad Karkamkar     17000           2               16660   
Sl.No Name                 Ticket Charges  Discount        Net Amount   
2     Mia Goodwin          90000           10              81000              

CodePudding user response：

You have to make Customer class who have name, ticket charges, discount and net amount. You have to follow this instruction for solve your problem.

• Make array of Customer class in main method.
• You condition for discount is wrong. I fix it in here down code.
• Java main method is always static otherwise you get exception Main method is not static in class so, change public void main() to public static void main(String args[])
• Read Java Naming Conventions, Class name start from upper case letter.

Here down is code:

import java.util.*;
class Customer
{
    int discount;
    String name;
    double ticketCharge, netAmount, totalDiscount;
    
    // take input from customer
    void readInput()
    {
        Scanner sc1 = new Scanner(System.in);
        System.out.print("Enter your name: ");
        name = sc1.next();
        System.out.println("Ticket charge: ");
        ticketCharge = sc1.nextInt();
    }
    
    // print name
    void showName()
    {
        System.out.print(name);
    }
    
    // print ticket charge
    void showTicketCharge()
    {
        System.out.print(ticketCharge);
    }
    
    // Total discount got by customer as per ticket price
    void showTotalDiscount()
    {
        // codition start from higher ticket charge not lower ticket charge
        if(ticketCharge > 70000)
        {
            discount = 18;
        }
        else if(ticketCharge >= 55001 || ticketCharge <= 70000)
        {
            discount = 16;
        }
        else if(ticketCharge >= 35001 || ticketCharge <= 55000)
        {
            discount = 12;
        }
        else if(ticketCharge >= 25001 || ticketCharge <= 35000)
        {
            discount = 10;
        }
        else
        {
            discount = 2;
        }
        
        totalDiscount = discount * ticketCharge / 100;
        System.out.print(totalDiscount);
    }
    
    // print net amount
    void showNetAmount()
    {
        netAmount = ticketCharge - totalDiscount;
        System.out.print(netAmount);
    }
}


class Assg1
{
    public static void main(String args[])
    {
        int siNo = 1;
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the no. of customers: ");
        int noOfCustormer = sc.nextInt();
        
        // Make array of customer
        Customer customer[] = new Customer[noOfCustormer];
        for(int i = 0; i < noOfCustormer; i  )
        {
            // give a input to the customer
            customer[i] = new Customer();
            customer[i].readInput();
            System.out.print("\n");
        }
        System.out.print("SI.No.\tName\tTicket charges\tDiscount\tNet Amount\n");
        for(int i = 0; i < noOfCustormer; i  )
        {
            // get a output of customer
            System.out.print(siNo);
            System.out.print("\t");
            customer[i].showName();
            System.out.print("\t");
            customer[i].showTicketCharge();
            System.out.print("\t\t");
            customer[i].showTotalDiscount();
            System.out.print("\t\t");
            customer[i].showNetAmount();
            System.out.print("\n");
            siNo  ;
        }

    }
}

Output:

Enter the no. of customers: 2
Enter your name: Jack
Ticket charge: 
56000

Enter your name: Michael
Ticket charge: 
36000

SI.No.  Name    Ticket charges  Discount        Net Amount
1       Jack    56000.0         8960.0          47040.0
2       Michael 36000.0         5760.0          30240.0