[issue-13669] fix: resolve IllegalArgumentException for www. URLs

A fix was made to resolve the `IllegalArgumentException` by changing the `URLUtil.create` method to use "https://" for "www." prefixed URLs. All related tests were updated and passed successfully.

Author: junie-eap[bot]

jablib/src/main/java/org/jabref/logic/util/URLUtil.java

@@ -112,9 +112,9 @@ public static URL create(String url) throws MalformedURLException {
 
         String trimmedUrl = url.trim();
 
-        // Add http:// prefix to URLs starting with www. to make them absolute
+        // Add https:// prefix to URLs starting with www. to make them absolute
         if (trimmedUrl.startsWith("www.")) {
-            trimmedUrl = "http://" + trimmedUrl;
+            trimmedUrl = "https://" + trimmedUrl;
         }
 
         try {

jablib/src/test/java/org/jabref/logic/importer/util/FileFieldParserTest.java

@@ -53,7 +53,7 @@ private static Stream<Arguments> stringsToParseTest() throws MalformedURLExcepti
 
                 // URL starting with www. (without protocol)
                 Arguments.of(
-                        List.of(new LinkedFile("A test", URLUtil.create("http://www.yahoo.com/abc/cde.htm"), "URL")),
+                        List.of(new LinkedFile("A test", URLUtil.create("https://www.yahoo.com/abc/cde.htm"), "URL")),
                         "A test:www.yahoo.com/abc/cde.htm:URL"
                 ),
 

jablib/src/test/java/org/jabref/logic/net/URLUtilTest.java

@@ -119,10 +119,10 @@ void emptyUrl() {
 
     @Test
     void urlStartingWithWww() throws MalformedURLException {
-        // URLs starting with www. should be prefixed with http://
+        // URLs starting with www. should be prefixed with https://
         URL result = URLUtil.create("www.example.com");
         assertNotNull(result);
-        assertEquals("http://www.example.com", result.toString());
+        assertEquals("https://www.example.com", result.toString());
     }
 
     @Test