diff --git a/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java b/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java
index 58638946c4..d3c672a160 100644
--- a/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java
+++ b/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java
@@ -1,32 +1,50 @@
 package com.ossez.toolkits.codebank;
 
+import java.util.Properties;
+import java.util.concurrent.ExecutorService;
+
+import com.google.gdata.data.docs.Size;
 import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.CommandLineParser;
+import org.apache.commons.cli.GnuParser;
 import org.apache.commons.cli.Options;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.Properties;
-
 /**
  * Main Test Class
  *
  * @author YuCheng Hu
  */
-public class Main {
+
+interface TestInterface1 {
+    // default method
+    default void show() {
+        System.out.println("Default TestInterface - 1 ");
+    }
+}
+
+interface TestInterface2 {
+    // Default method
+    default void show() {
+        System.out.println("Default TestInterface - 2");
+    }
+}
+
+
+public class Main implements TestInterface1, TestInterface2 {
     private static final Logger logger = LoggerFactory.getLogger(Main.class);
 
-    private static Options options = new Options();
-    private static Properties properties = new Properties();
-
-    private static CommandLine cl = null;
-
-    private static boolean dryRun = false;
-    private static int limit = 0;
-    private static boolean force = false;
-
 
     public static void main(String[] args) {
-
+        new Main().show();
 
     }
+
+    @Override
+    public void show() {
+        TestInterface1.super.show();
+        TestInterface2.super.show();
+    }
 }
diff --git a/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/EmptyQuickTest.java b/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/EmptyQuickTest.java
index 20faca97c4..35d09fd9fb 100644
--- a/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/EmptyQuickTest.java
+++ b/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/EmptyQuickTest.java
@@ -4,6 +4,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.collections.CollectionUtils;
 import org.apache.commons.lang3.RegExUtils;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.math.NumberUtils;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -37,80 +38,17 @@ public class EmptyQuickTest {
 
     @Test
     public void testMain() {
-        Integer[] nums = {2, 7, 11, 15};
+        List<String> testList = new ArrayList<>();
 
-        Integer target = 9;
 
-        String s1 = "Question, what kind of bear is best?";
-        String s2 = "That's a ridiculous question!";
-        String s3 = "False.";
-        String s4 = "Black bear is the best bear.";
+        testList.add(String.valueOf(1L));
+        testList.add("iSharkFly");
+        testList.add(String.valueOf(2));
+        testList.forEach(e -> log.debug("{}", e));
 
-        List<String> inputStr = new ArrayList<>();
-        inputStr.add(RegExUtils.replaceAll(s1, "[^a-zA-Z\\s]", "").toLowerCase());
-        inputStr.add(RegExUtils.replaceAll(s2, "[^a-zA-Z\\s]", "").toLowerCase());
-        inputStr.add(RegExUtils.replaceAll(s3, "[^a-zA-Z\\s]", "").toLowerCase());
-        inputStr.add(RegExUtils.replaceAll(s4, "[^a-zA-Z\\s]", "").toLowerCase());
 
-        HashMap<String, List<String>> wordsMap = new HashMap<>();
-
-        for (int i = 0; i < inputStr.size(); i++) {
-            String words = inputStr.get(i);
-            List<String> wordsList = List.of(StringUtils.split(inputStr.get(i)));
-            for (int j = 0; j < wordsList.size(); j++) {
-                String word = wordsList.get(j);
-                List<String> inStr = new ArrayList<>();
-                if (wordsMap.get(word) != null) {
-                    inStr = wordsMap.get(word);
-                }
-                inStr.add("" + (i + 1));
-                wordsMap.put(word, inStr);
-
-            }
-        }
-
-        TreeMap<Integer, List<String>> countMap = new TreeMap<>(Collections.reverseOrder());
-        for (Map.Entry<String, List<String>> stringListEntry : wordsMap.entrySet()) {
-            Integer wordCount = stringListEntry.getValue().size();
-            List<String> wordsList = new ArrayList<>();
-            if (countMap.get(wordCount) != null) {
-                wordsList = countMap.get(wordCount);
-
-            }
-            wordsList.add(stringListEntry.getKey());
-            countMap.put(wordCount, wordsList);
-        }
-
-        for (Map.Entry<Integer, List<String>> integerListEntry : countMap.entrySet()) {
-            List<String> outputList = integerListEntry.getValue();
-            for (int i = 0; i < outputList.size(); i++) {
-                List<String> sList = wordsMap.get(outputList.get(i));
-                log.debug("{}[{}:{}]", outputList.get(i), integerListEntry.getKey(), sList.stream().distinct().collect(Collectors.toList()));
-            }
-
-        }
-
-    }
-
-    private Boolean hasVowels(String str) {
-
-        str = StringUtils.trimToEmpty(str);
-        str = StringUtils.lowerCase(str);
-        str = StringUtils.remove(str, " ");
-
-        if (StringUtils.contains(str, VOWEL_A)) {
-            return Boolean.TRUE;
-        } else if (StringUtils.contains(str, VOWEL_E)) {
-            return Boolean.TRUE;
-        } else if (StringUtils.contains(str, VOWEL_I)) {
-            return Boolean.TRUE;
-        } else if (StringUtils.contains(str, VOWEL_O)) {
-            return Boolean.TRUE;
-        } else if (StringUtils.contains(str, VOWEL_U)) {
-            return Boolean.TRUE;
-        }
-
-        return Boolean.FALSE;
+        String index0 = (String) testList.get(0);
+        String index1 = (String) testList.get(1);
     }
 
 }