MathUtil, NumberUtil, StartupUtil Quick fixes (#141)

* Quick fixes

* testing

* Rollback UtilityClass, SuppressWarnings for consistency,

* Rollback StartupUtil for consistency

* NumberUtil - don't use UtilityClass for now

* MathUtil - don't use UtilityClass for now

Co-authored-by: James <jcahill773@gmail.com>

Author: aakatz3

build.gradle

@@ -11,7 +11,7 @@ plugins {
 
 allprojects {
     group = "com.dumbdogdiner"
-    version = "3.0.2"
+    version = "3.0.3"
 
     // java plugin is applied in subprojects
     apply plugin: "jacoco"

bukkit/src/main/java/com/dumbdogdiner/stickyapi/bukkit/util/SoundUtil.java

@@ -38,8 +38,7 @@ private static Boolean validate(CommandSender sender) {
      * @param pitch  The pitch of the sound
      * @param delay  T
      */
-    public static void queueSound(@NotNull Player player, @NotNull Sound sound, @NotNull float volume,
-            @NotNull float pitch, @NotNull Long delay) {
+    public static void queueSound(@NotNull Player player, @NotNull Sound sound, float volume, float pitch, long delay) {
         StickyAPI.getPool().submit(() -> {
             try {
                 Thread.sleep(delay);
@@ -100,7 +99,7 @@ public static void sendSuccess(@NotNull Player player) {
      * @param type   {@link NotificationType} The type of sound
      * @return {@link java.lang.Boolean}
      */
-    public static Boolean send(@NotNull CommandSender sender, @NotNull NotificationType type) {
+    public static boolean send(@NotNull CommandSender sender, @NotNull NotificationType type) {
         if (!validate(sender)) {
             return false;
         }

common/src/main/java/com/dumbdogdiner/stickyapi/common/util/MathUtil.java

@@ -8,6 +8,8 @@
 import com.google.common.primitives.Ints;
 import org.jetbrains.annotations.NotNull;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.text.CharacterIterator;
 import java.text.StringCharacterIterator;
 import java.util.List;
@@ -119,10 +121,16 @@ public static <T> T randomElement(@NotNull List<T> list) {
      * @return {@link Double}
      */
     public static double round(double value, int places) {
-        long factor = (long) Math.pow(10, places);
-        value = value * factor;
-        long tmp = Math.round(value);
-        return (double) tmp / factor;
+        return new BigDecimal(value).setScale(places, RoundingMode.HALF_UP).doubleValue();
+    }
+
+    /**
+     * Rounds a double to 2 decimals
+     * @param d The double to round
+     * @return The rounded double
+     */
+    public static double round2Places(double d){
+        return round(d, 2);
     }
 
     /**

common/src/main/java/com/dumbdogdiner/stickyapi/common/util/NumberUtil.java

@@ -6,6 +6,14 @@
 
 import org.jetbrains.annotations.NotNull;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
+import java.text.NumberFormat;
+import java.util.Currency;
+import java.util.Locale;
+
 /**
  * <p>
  * Provides extra functionality for Java Number classes.
@@ -15,6 +23,11 @@ public final class NumberUtil {
     private NumberUtil() {
     }
 
+    private static final NumberFormat moneyFormat = NumberFormat.getCurrencyInstance();
+    static {
+        moneyFormat.setCurrency(Currency.getInstance(Locale.US));
+    }
+
     /**
      * <p>
      * Checks if the String contains only unicode digits. A decimal point is not a
@@ -137,4 +150,16 @@ public static int longToInt(@NotNull long lng) {
             }
         }
     }
+
+
+    /**
+     * Formats a price into US currency format
+     * @param price Price to format
+     * @return Formatted String
+     */
+    public static String formatPrice(double price) {
+        return moneyFormat.format(price);
+    }
+
+
 }

common/src/test/java/com/dumbdogdiner/stickyapi/common/util/NumberUtilTest.java

@@ -58,4 +58,15 @@ public void testIntHelperMax() {
     public void testIntHelperMin() {
         assertEquals(NumberUtil.longToInt(((long) Integer.MIN_VALUE) - 1L), Integer.MIN_VALUE);
     }
+
+    @Test
+    public void formatPrice() {
+        System.out.println(NumberUtil.formatPrice(1.00001));
+        assertEquals("$1.00", NumberUtil.formatPrice(1.0000001));
+    }
+
+    @Test
+    public void round2Places() {
+        assertEquals(6.51D, MathUtil.round2Places(6.509));
+    }
 }