Java I/O und NIO

--- LegacyFileCopy.java
+++ PathFileService.java
@@ -1,29 +1,30 @@
-package at.aydin.lab.io.legacy;
+package at.aydin.lab.io.modern;
 
-// Design Pattern: Adapter – kapselt streambasiertes Kopieren hinter einer kleinen Datei-API.
 import java.io.*;
+import java.nio.file.*;
+import java.util.*;
+import java.util.zip.*;
 
-public final class LegacyFileCopy {
-    public long copy(File source, File target) throws IOException {
-        InputStream in = null;
-        OutputStream out = null;
-        long bytes = 0;
-        try {
-            in = new FileInputStream(source);
-            out = new FileOutputStream(target);
-            byte[] buffer = new byte[4096];
-            int read;
-            while ((read = in.read(buffer)) >= 0) {
-                out.write(buffer, 0, read);
-                bytes += read;
-            }
-            return bytes;
-        } finally {
-            if (in != null) try {
-                in.close();
-            } catch (IOException ignored) {
-            }
-            if (out != null) out.close();
+// Design Pattern: Adapter
+// Zweck: Fachliche Dateioperationen werden hinter der modernen Path-/Files-API gebündelt.
+public final class PathFileService {
+    public long copy(Path source, Path target) throws IOException {
+        Files.copy(source, target, StandardCopyOption.REPLACE_EXISTING);
+        return Files.size(target);
+    }
+
+    public List<Path> find(Path root, String suffix) throws IOException {
+        try (var paths = Files.walk(root)) {
+            return paths.filter(Files::isRegularFile).filter(p -> p.getFileName().toString().endsWith(suffix)).sorted()
+                    .toList();
+        }
+    }
+
+    public void zip(Path source, Path zip) throws IOException {
+        try (ZipOutputStream out = new ZipOutputStream(Files.newOutputStream(zip))) {
+            out.putNextEntry(new ZipEntry(source.getFileName().toString()));
+            Files.copy(source, out);
+            out.closeEntry();
         }
     }
 }