49 lines
1.5 KiB
Java
49 lines
1.5 KiB
Java
// strings/ReceiptBuilder.java
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// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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import java.util.*;
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public class ReceiptBuilder {
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private double total = 0;
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private Formatter f =
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new Formatter(new StringBuilder());
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public ReceiptBuilder() {
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f.format(
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"%-15s %5s %10s%n", "Item", "Qty", "Price");
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f.format(
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"%-15s %5s %10s%n", "----", "---", "-----");
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}
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public void add(String name, int qty, double price) {
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f.format("%-15.15s %5d %10.2f%n", name, qty, price);
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total += price * qty;
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}
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public String build() {
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f.format("%-15s %5s %10.2f%n", "Tax", "",
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total * 0.06);
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f.format("%-15s %5s %10s%n", "", "", "-----");
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f.format("%-15s %5s %10.2f%n", "Total", "",
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total * 1.06);
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return f.toString();
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}
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public static void main(String[] args) {
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ReceiptBuilder receiptBuilder =
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new ReceiptBuilder();
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receiptBuilder.add("Jack's Magic Beans", 4, 4.25);
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receiptBuilder.add("Princess Peas", 3, 5.1);
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receiptBuilder.add(
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"Three Bears Porridge", 1, 14.29);
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System.out.println(receiptBuilder.build());
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}
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}
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/* Output:
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Item Qty Price
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---- --- -----
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Jack's Magic Be 4 4.25
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Princess Peas 3 5.10
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Three Bears Por 1 14.29
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Tax 2.80
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-----
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Total 49.39
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*/
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