JAVA-23392 Adding some more example for differences between Scanner n… (#14491)

* JAVA-23392 Adding some more example for differences between Scanner next() vs nextLine()

* Update NextVsNextLineUnitTest.java

---------

Co-authored-by: timis1 <noreplay@yahoo.com>
Co-authored-by: Dhawal Kapil <dhawalkapil@gmail.com>

core-java-modules/core-java-scanner/src/test/java/com/baeldung/scanner/NextVsNextLineUnitTest.java

@@ -17,6 +17,24 @@ class NextVsNextLineUnitTest {
         }
     }
 
+    @Test
+    void givenInput_whenUsingNextMethodWithMultipleWhiteSpaces_thenReturnToken() {
+        String input = "Hello        world";
+        try (Scanner scanner = new Scanner(input)) {
+            assertEquals("Hello", scanner.next());
+            assertEquals("world", scanner.next());
+        }
+    }
+
+    @Test
+    void givenInput_whenUsingNextMethodWithTabAndNewLine_thenReturnToken() {
+        String input = "Hello    \t\n world";
+        try (Scanner scanner = new Scanner(input)) {
+            assertEquals("Hello", scanner.next());
+            assertEquals("world", scanner.next());
+        }
+    }
+
     @Test
     void givenInput_whenUsingNextMethodWithCustomDelimiter_thenReturnToken() {
         String input = "Hello :world";
@@ -37,6 +55,24 @@ class NextVsNextLineUnitTest {
         }
     }
 
+    @Test
+    void givenInput_whenUsingNextLineMethodWithCR_thenReturnEntireLine() {
+        String input = "Hello world\rWelcome to baeldung.com";
+        try (Scanner scanner = new Scanner(input)) {
+            assertEquals("Hello world", scanner.nextLine());
+            assertEquals("Welcome to baeldung.com", scanner.nextLine());
+        }
+    }
+
+    @Test
+    void givenInput_whenUsingNextLineMethodWithCRLF_thenReturnEntireLine() {
+        String input = "Hello world\r\nWelcome to baeldung.com";
+        try (Scanner scanner = new Scanner(input)) {
+            assertEquals("Hello world", scanner.nextLine());
+            assertEquals("Welcome to baeldung.com", scanner.nextLine());
+        }
+    }
+
     @Test
     void givenInput_whenUsingNextLineWithCustomDelimiter_thenIgnoreDelimiter() {
         String input = "Hello:world\nWelcome:to baeldung.com";