cleanup, turn into record classes

src/main/java/io/github/lumijiez/core/http/HttpFileItem.java

@@ -4,28 +4,7 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 
-public class HttpFileItem {
-    private final String fileName;
-    private final String contentType;
-    private final byte[] content;
-
-    public HttpFileItem(String fileName, String contentType, byte[] content) {
-        this.fileName = fileName;
-        this.contentType = contentType;
-        this.content = content;
-    }
-
-    public String getFileName() {
-        return fileName;
-    }
-
-    public String getContentType() {
-        return contentType;
-    }
-
-    public byte[] getContent() {
-        return content;
-    }
+public record HttpFileItem(String fileName, String contentType, byte[] content) {
 
     public void saveTo(File destination) throws IOException {
         try (FileOutputStream fos = new FileOutputStream(destination)) {

src/main/java/io/github/lumijiez/core/http/HttpRequest.java

@@ -74,7 +74,7 @@ public class HttpRequest {
         this.path = URLDecoder.decode(this.path, StandardCharsets.UTF_8);
     }
 
-    private void parseQueryString(String queryString) throws IOException {
+    private void parseQueryString(String queryString) {
         String[] pairs = queryString.split("&");
         for (String pair : pairs) {
             int idx = pair.indexOf("=");
@@ -82,7 +82,7 @@ public class HttpRequest {
                 String key = URLDecoder.decode(pair.substring(0, idx), StandardCharsets.UTF_8);
                 String value = URLDecoder.decode(pair.substring(idx + 1), StandardCharsets.UTF_8);
 
-                queryParams.computeIfAbsent(key, k -> new ArrayList<>()).add(value);
+                queryParams.computeIfAbsent(key, _ -> new ArrayList<>()).add(value);
                 Logger.debug("HTTP", "Query param: " + key + " = " + value);
             }
         }
@@ -150,6 +150,7 @@ public class HttpRequest {
         }
     }
 
+    @SuppressWarnings("StatementWithEmptyBody")
     private void parseChunkedBody(BufferedReader in) throws IOException {
         StringBuilder content = new StringBuilder();
         while (true) {
@@ -248,7 +249,7 @@ public class HttpRequest {
 
     public String getQueryParam(String name) {
         List<String> values = queryParams.get(name);
-        return values != null && !values.isEmpty() ? values.get(0) : null;
+        return values != null && !values.isEmpty() ? values.getFirst() : null;
     }
 
     public List<String> getQueryParams(String name) {

src/main/java/io/github/lumijiez/core/http/HttpRequestBody.java

@@ -5,17 +5,10 @@ import com.fasterxml.jackson.dataformat.xml.XmlMapper;
 
 import java.io.IOException;
 
-public class HttpRequestBody {
-    private final String rawContent;
-    private final HttpContentType contentType;
+public record HttpRequestBody(String rawContent, HttpContentType contentType) {
     private static final ObjectMapper jsonMapper = new ObjectMapper();
     private static final XmlMapper xmlMapper = new XmlMapper();
 
-    public HttpRequestBody(String rawContent, HttpContentType contentType) {
-        this.rawContent = rawContent;
-        this.contentType = contentType;
-    }
-
     public <T> T parseAs(Class<T> clazz) throws IOException {
         return switch (contentType) {
             case APPLICATION_JSON -> jsonMapper.readValue(rawContent, clazz);
@@ -23,12 +16,4 @@ public class HttpRequestBody {
             default -> throw new IOException("Unsupported content type for parsing: " + contentType);
         };
     }
-
-    public String getRawContent() {
-        return rawContent;
-    }
-
-    public HttpContentType getContentType() {
-        return contentType;
-    }
 }

src/main/java/io/github/lumijiez/example/Main.java

@@ -45,9 +45,9 @@ public class Main {
 
             HttpFileItem uploadedFile = multipartData.getFile("file");
             if (uploadedFile != null) {
-                String fileName = uploadedFile.getFileName();
-                String contentType = uploadedFile.getContentType();
-                byte[] fileContent = uploadedFile.getContent();
+                String fileName = uploadedFile.fileName();
+                String contentType = uploadedFile.contentType();
+                byte[] fileContent = uploadedFile.content();
 
                 File uploadDir = new File("uploads");
                 if (!uploadDir.exists()) {