Initial data commit

Task/Currency/Java/currency.java

@@ -0,0 +1,39 @@
+import java.math.*;
+import java.util.*;
+
+public class Currency {
+    final static String taxrate = "7.65";
+
+    enum MenuItem {
+
+        Hamburger("5.50"), Milkshake("2.86");
+
+        private MenuItem(String p) {
+            price = new BigDecimal(p);
+        }
+
+        public final BigDecimal price;
+    }
+
+    public static void main(String[] args) {
+        Locale.setDefault(Locale.ENGLISH);
+
+        MathContext mc = MathContext.DECIMAL128;
+
+        Map<MenuItem, BigDecimal> order = new HashMap<>();
+        order.put(MenuItem.Hamburger, new BigDecimal("4000000000000000"));
+        order.put(MenuItem.Milkshake, new BigDecimal("2"));
+
+        BigDecimal subtotal = BigDecimal.ZERO;
+        for (MenuItem it : order.keySet())
+            subtotal = subtotal.add(it.price.multiply(order.get(it), mc));
+
+        BigDecimal tax = new BigDecimal(taxrate, mc);
+        tax = tax.divide(new BigDecimal("100"), mc);
+        tax = subtotal.multiply(tax, mc);
+
+        System.out.printf("Subtotal: %20.2f%n", subtotal);
+        System.out.printf("     Tax: %20.2f%n", tax);
+        System.out.printf("   Total: %20.2f%n", subtotal.add(tax));
+    }
+}