Spark graphx moved to a new project due to a incompatibility of scala compiler

java-numbers/src/main/java/com/baeldung/numberofdigits/NumberOfDigitsDriver.java

@@ -0,0 +1,35 @@
+package com.baeldung.numberofdigits;
+
+import org.apache.log4j.Logger;
+
+public class NumberOfDigitsDriver {
+    private static NumberOfDigits numberOfDigits;
+
+    private static Logger LOG = Logger.getLogger(NumberOfDigitsDriver.class);
+
+    static {
+        numberOfDigits = new NumberOfDigits();
+    }
+
+    public static void main(String[] args) {
+        LOG.info("Testing all methods...");
+
+        long length = numberOfDigits.stringBasedSolution(602);
+        LOG.info("String Based Solution : " + length);
+
+        length = numberOfDigits.logarithmicApproach(602);
+        LOG.info("Logarithmic Approach : " + length);
+
+        length = numberOfDigits.repeatedMultiplication(602);
+        LOG.info("Repeated Multiplication : " + length);
+
+        length = numberOfDigits.shiftOperators(602);
+        LOG.info("Shift Operators : " + length);
+
+        length = numberOfDigits.dividingWithPowersOf2(602);
+        LOG.info("Dividing with Powers of 2 : " + length);
+
+        length = numberOfDigits.divideAndConquer(602);
+        LOG.info("Divide And Conquer : " + length);
+    }
+}