diff --git a/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/utils/HeaderFooterDetection.java b/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/utils/HeaderFooterDetection.java
index 4668195..f11f250 100644
--- a/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/utils/HeaderFooterDetection.java
+++ b/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/utils/HeaderFooterDetection.java
@@ -58,7 +58,7 @@ public class HeaderFooterDetection {
 
 
     private boolean detectHeadersOrFootersByPageAssociation(String testString, List<List<AbstractPageBlock>> candidates, int window, double[] weights) {
-        
+
         double highestScore = 0.0;
 
         for (int i = 0; i < candidates.size(); i++) {
@@ -80,7 +80,7 @@ public class HeaderFooterDetection {
                 }
             }
 
-            // Compare the testString against each candidates in the window
+            // Compare the testString against each candidate in the window
             for (int j = 0; j < maxLen; j++) {
                 double score = 0.0;
                 try {
@@ -103,18 +103,18 @@ public class HeaderFooterDetection {
     }
 
 
-    private double compare(String a, String b) {
+    private double compare(String candidate1, String candidate2) {
 
         int count = 0;
-        a = a.replaceAll("\\d", "@");
-        b = b.replaceAll("\\d", "@");
+        candidate1 = candidate1.replaceAll("\\d", "@");
+        candidate2 = candidate2.replaceAll("\\d", "@");
 
-        for (int i = 0; i < Math.min(a.length(), b.length()); i++) {
-            if (a.charAt(i) == b.charAt(i)) {
+        for (int i = 0; i < Math.min(candidate1.length(), candidate2.length()); i++) {
+            if (candidate1.charAt(i) == candidate2.charAt(i)) {
                 count++;
             }
         }
-        return (double) count / Math.max(a.length(), b.length());
+        return (double) count / Math.max(candidate1.length(), candidate2.length());
     }
 
 
@@ -139,7 +139,7 @@ public class HeaderFooterDetection {
 
         for (int i = start; i <= end; i++) {
             if (i != currentPageIndex) {
-                nearestPages.add(pagesCache.computeIfAbsent(i, idx -> allPages.get(idx)));
+                nearestPages.add(pagesCache.computeIfAbsent(i, allPages::get));
             }
         }