fix methods from wrong Java version, fix types

Author: Katsute

pom.xml

@@ -130,9 +130,9 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
-    <name>OneMTA</name>
+    <name>SimpleHttpServer</name>
     <description>A simple and efficient HTTP server for Java</description>
-    <url>https://github.com/KatsuteDev/simplehttpser</url>
+    <url>https://github.com/KatsuteDev/simplehttpserver</url>
 
     <licenses>
         <license>

src/main/java/dev/katsute/simplehttpserver/handler/file/DirectoryEntry.java

@@ -48,12 +48,14 @@ public class DirectoryEntry {
 
         if(loadingOption != FileLoadingOption.LIVE){
             if(!isWalkthrough){
-                final File[] listFiles = Objects.requireNonNullElse(directory.listFiles(File::isFile), new File[0]);
-                for(final File file : listFiles)
-                    addFile(file);
+                final File[] listFiles = directory.listFiles(File::isFile);
+                if(listFiles != null)
+                    for(final File file : listFiles)
+                        addFile(file);
             }else{
                 try{
-                    Files.walkFileTree(directoryPath, new SimpleFileVisitor<>() {
+                    //noinspection Convert2Diamond
+                    Files.walkFileTree(directoryPath, new SimpleFileVisitor<Path>() { // won't compile unless we explicitly set type
                         @Override
                         public final FileVisitResult visitFile(final Path path, final BasicFileAttributes attrs){
                             addDirectoryFile(path.toFile());
@@ -107,9 +109,11 @@ public final File getFile(final String path){
         final String fileName = targetFile.getParentFile() == null ? targetFile.getPath() : targetFile.getName();
 
         // for each file in parent directory, run adapter to find file that matches adapted name
-        for(final File file : Objects.requireNonNullElse(parentFile.listFiles(), new File[0]))
-            if(fileName.equals(adapter.getName(file)))
-                return file;
+        final File[] parentFiles = parentFile.listFiles();
+        if(parentFiles != null)
+            for(final File file : parentFiles)
+                if(fileName.equals(adapter.getName(file)))
+                    return file;
         return null;
     }