From 02f497bf751fd154618abd75e5cf4942b6c28cee Mon Sep 17 00:00:00 2001
From: Bahaa El-Din Helmy <bahaavampire@yahoo.com>
Date: Wed, 31 May 2023 21:09:25 +0300
Subject: [PATCH] Update article "Difference Between \z and \Z in a Regular
 Expression in Java" (#14151)

This commit for "Update article "Difference Between \z and \Z in a Regular Expression in Java""
---
 .../z_regexp/ZRegularExpressionUnitTest.java  | 62 ++++++++++++++++---
 1 file changed, 55 insertions(+), 7 deletions(-)

diff --git a/core-java-modules/core-java-regex-2/src/test/java/com/baeldung/regex/z_regexp/ZRegularExpressionUnitTest.java b/core-java-modules/core-java-regex-2/src/test/java/com/baeldung/regex/z_regexp/ZRegularExpressionUnitTest.java
index 90bbbb6540..a24682fc1a 100644
--- a/core-java-modules/core-java-regex-2/src/test/java/com/baeldung/regex/z_regexp/ZRegularExpressionUnitTest.java
+++ b/core-java-modules/core-java-regex-2/src/test/java/com/baeldung/regex/z_regexp/ZRegularExpressionUnitTest.java
@@ -3,33 +3,81 @@ package com.baeldung.regex.z_regexp;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
+import java.util.regex.Pattern;
 public class ZRegularExpressionUnitTest {
     @Test
     public void givenCreditCardNumber_thenReturnIfMatched() {
         String creditCardNumber = "1234567890123456";
+        String creditCardNumber2 = "1234567890123456\n";
         String pattern = "\\d{16}\\z";
-        Assertions.assertTrue(creditCardNumber.matches(pattern));
+        Assertions.assertTrue(Pattern.compile(pattern).matcher(creditCardNumber).find());
+        Assertions.assertFalse(Pattern.compile(pattern).matcher(creditCardNumber2).find());
+    }
+
+    @Test
+    public void givenCreditCardNumber_thenReturnIfNotMatched() {
+        String creditCardNumber = "1234567890123456\n";
+        String pattern = "\\d{16}\\z";
+        Assertions.assertFalse(Pattern.compile(pattern).matcher(creditCardNumber).find());
     }
 
     @Test
     public void givenLogOutput_thenReturnIfMatched() {
         String logLine = "2022-05-01 14:30:00,123 INFO Some log message";
         String pattern = ".*message\\z";
-        Assertions.assertTrue(logLine.matches(pattern));
+        Assertions.assertTrue(Pattern.compile(pattern).matcher(logLine).find());
     }
 
+    @Test
+    public void givenLogOutput_thenReturnIfNotMatched() {
+        String logLine = "2022-05-01 14:30:00,123 INFO Some log message\n";
+        String pattern = ".*message\\z";
+        Assertions.assertFalse(Pattern.compile(pattern).matcher(logLine).find());
+    }
     @Test
     public void givenEmailMessage_thenReturnIfMatched() {
         String myMessage = "Hello HR, I hope i can write to Baeldung\n";
-        String pattern = ".*Baeldung\\s*\\Z";
-        Assertions.assertTrue(myMessage.matches(pattern));
+        String myMessage2 = "Hello HR, I hope\n i can write to Baeldung";
+        String pattern = ".*Baeldung\\Z";
+        String pattern2 = ".*hope\\Z";
+        Assertions.assertTrue(Pattern.compile(pattern).matcher(myMessage).find());
+        Assertions.assertFalse(Pattern.compile(pattern2).matcher(myMessage2).find());
+    }
+
+    @Test
+    public void givenEmailMessage_thenReturnIfNotMatched() {
+        String myMessage = "Hello HR, I hope\n i can write to Baeldung";
+        String pattern = ".*hope\\Z";
+        Assertions.assertFalse(Pattern.compile(pattern).matcher(myMessage).find());
     }
 
     @Test
     public void givenFileExtension_thenReturnIfMatched() {
-        String fileName = "image.jpeg";
+        String fileName = "image.jpeg\n";
+        String fileName2 = "image2.jpeg\n.png";
         String pattern = ".*\\.jpeg\\Z";
-        Assertions.assertTrue(fileName.matches(pattern));
+        Assertions.assertTrue(Pattern.compile(pattern).matcher(fileName).find());
+        Assertions.assertFalse(Pattern.compile(pattern).matcher(fileName2).find());
     }
 
-}
+    @Test
+    public void givenFileExtension_thenReturnIfNotMatched() {
+        String fileName = "image2.jpeg\n.png";
+        String pattern = ".*\\.jpeg\\Z";
+        Assertions.assertFalse(Pattern.compile(pattern).matcher(fileName).find());
+    }
+    @Test
+    public void givenURL_thenReturnIfMatched() {
+        String url = "https://www.example.com/api/endpoint\n";
+        String pattern = ".*/endpoint$";
+        Assertions.assertTrue(Pattern.compile(pattern).matcher(url).find());
+    }
+
+    @Test
+    public void givenSentence_thenReturnIfMatched() {
+        String sentence = "Hello, how are you?";
+        String pattern = ".*[.?!]$";
+        Assertions.assertTrue(Pattern.compile(pattern).matcher(sentence).find());
+    }
+
+}
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