Revert "BAEL-4134"

java-numbers-3/src/main/java/com/baeldung/formatNumber/FormatNumber.java

@@ -0,0 +1,73 @@
+package com.baeldung.formatNumber;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.text.DecimalFormat;
+import java.text.NumberFormat;
+import java.util.Locale;
+
+public class FormatNumber {
+    public static double withBigDecimal(double value, int places) {
+        if (places < 0)
+            throw new IllegalArgumentException();
+
+        BigDecimal bigDecimal = new BigDecimal(value);
+        bigDecimal = bigDecimal.setScale(places, RoundingMode.HALF_UP);
+        return bigDecimal.doubleValue();
+    }
+
+    public static double withMathRound(double value, int places) {
+        double scale = Math.pow(10, places);
+        return Math.round(value * scale) / scale;
+    }
+
+    public static double withDecimalFormatPattern(double value, int places) {
+        DecimalFormat df2 = new DecimalFormat("#,###,###,##0.00");
+        DecimalFormat df3 = new DecimalFormat("#,###,###,##0.000");
+        if (places == 2)
+            return new Double(df2.format(value));
+        else if (places == 3)
+            return new Double(df3.format(value));
+        else
+            throw new IllegalArgumentException();
+    }
+
+    public static double withDecimalFormatLocal(double value) {
+        DecimalFormat df = (DecimalFormat) NumberFormat.getNumberInstance(Locale.getDefault());
+        return new Double(df.format(value));
+    }
+
+    public static String withStringFormat(double value, int places) {
+        return String.format("%." + places + "f", value);
+    }
+
+    public static String byPaddingZeros(int value, int paddingLength) {
+        return String.format("%0" + paddingLength + "d", value);
+    }
+
+    public static double withTwoDecimalPlaces(double value) {
+        DecimalFormat df = new DecimalFormat("#.00");
+        return new Double(df.format(value));
+    }
+
+    public static String withLargeIntegers(double value) {
+        DecimalFormat df = new DecimalFormat("###,###,###");
+        return df.format(value);
+    }
+
+    public static String forPercentages(double value, Locale localisation) {
+        NumberFormat nf = NumberFormat.getPercentInstance(localisation);
+        return nf.format(value);
+    }
+
+    public static String currencyWithChosenLocalisation(double value, Locale localisation) {
+        NumberFormat nf = NumberFormat.getCurrencyInstance(localisation);
+        return nf.format(value);
+    }
+
+    public static String currencyWithDefaultLocalisation(double value) {
+        NumberFormat nf = NumberFormat.getCurrencyInstance();
+        return nf.format(value);
+    }
+}
+

java-numbers-3/src/main/java/com/baeldung/integerToBinary/IntegerToBinary.java

@@ -0,0 +1,17 @@
+package com.baeldung.integerToBinary;
+
+public class IntegerToBinary {
+    public static String convertIntegerToBinary(int n) {
+        if(n == 0) {
+            return "0";
+        }
+        StringBuilder binaryNumber = new StringBuilder();
+        while (n > 0) {
+            int remainder = n % 2;
+            binaryNumber.append(remainder);
+            n /= 2;
+        }
+        binaryNumber = binaryNumber.reverse();
+        return binaryNumber.toString();
+    }
+}