diff --git a/AlgebraicDataflowArchitectureModel/src/code/ast/NumberUtil.java b/AlgebraicDataflowArchitectureModel/src/code/ast/NumberUtil.java
index dd076e8..c637f00 100644
--- a/AlgebraicDataflowArchitectureModel/src/code/ast/NumberUtil.java
+++ b/AlgebraicDataflowArchitectureModel/src/code/ast/NumberUtil.java
@@ -15,8 +15,8 @@
 	 * @param token The string to be evaluated as a hexadecimal number.
 	 * @return {@code true} if the given string represents a valid hexadecimal number,
 	 * {@code false} otherwise.
-	 * @apiNote This method returns {@code true} if the given token is a valid hexadecimal number representaion in <b>Java source code</b>.
-	 * So make sure that the specification of this method is determined by Java language specification. Hexadecimal Floating-Point is not supported yet.
+	 * @apiNote This method returns {@code true} if the given token is a valid hexadecimal number representation in <b>Java source code</b>.
+	 * Therefore, the validation rules strictly adhere to the Java language specification. Hexadecimal floating-point is not supported yet.
 	 */
 	public static boolean isHexNumber(String token) {
 		if (token == null) {
@@ -37,29 +37,29 @@
 		lexer.advance(); // 0
 		lexer.advance(); // x
 		
-		// Checks for cases like 0x or 0x_ (Invalid underscore position)
+		// Check for cases like 0x or 0x_ (Invalid underscore position)
 		if (lexer.peek() == '\0' || lexer.peek() == '_') {
 			return false;
 		}
 		
-		char prev = 'x'; // Prior character is 'x'
+		char prev = 'x'; // Initialize the previous character as 'x'
 		boolean hasDigit = false;
 		
 		while (lexer.peek() != '\0') {
 			char c = lexer.advance();
 			
 			if (c == 'l') {
-				// Suffix for long literal must be the last character in the literal.
+				// The suffix for a long literal must be the last character in the literal.
 				if (lexer.peek() != '\0') {
 					return false;
 				}
 				
-				// Suffix must NOT be located right after an underscore
+				// The suffix must NOT be placed immediately after an underscore
 				if (prev == '_') {
 					return false;
 				}
 				
-				// Finish checking the format
+				// Valid suffix found; finish checking
 				break;
 			}
 			
@@ -78,7 +78,7 @@
 			prev = c;
 		}
 		
-		// Checks for cases like 0xFFFFF_ (Invalid underscore position)
+		// Check for cases like 0xFFFFF_ (Invalid trailing underscore)
 		if (prev == '_') {
 			return false;
 		}