priceSurvey

import java.util.Scanner;

/**
 * Main class for Price Survey logic testing
 */

public class priceSurvey {

    public static void main(String[] args) {

        String price;
        Scanner input = new Scanner(System.in);

        System.out.println("Please enter the price: ");
        price = input.nextLine();

        if(price.startsWith("0")) {
            //input 0 as a null placeholder
            System.out.println("0");

        } else if(price.contains(".") && price.length() > 3  && price.endsWith("9")){
            System.out.println(price);

        } else if(price.contains(".") && price.length() > 2) {
            //ensure trailing 9
            price = new StringBuffer(price).insert(price.length(), "9").toString();

            System.out.print(price);

        } else if(price.length() > 3){
            //add decimal point and ensure trailing 9
            price = price.substring(0, 1) + "." + price.substring(1);
            price = new StringBuffer(price).insert(price.length() - 1, "9").toString();
            price = price.substring(0, price.length() - 1);

            System.out.print(price);

        } else if(price.length() > 2){
            //add decimal point and ensure trailing 9
            price = price.substring(0, 1) + "." + price.substring(1);
            price = new StringBuffer(price).insert(price.length(), "9").toString();

            System.out.print(price);

        } else if (price.length() < 3 ) {
            System.out.println("Invalid entry");
        }


    }

}