Downloading & listView initialization problems

Controller.java

@@ -0,0 +1,118 @@
+import javafx.application.Platform;
+import javafx.fxml.Initializable;
+import javafx.scene.control.Button;
+import javafx.scene.control.ListView;
+import javafx.scene.control.TextField;
+import lombok.Builder;
+
+import java.io.*;
+import java.net.Socket;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.List;
+import java.util.ResourceBundle;
+import java.util.stream.Collectors;
+
+public class Controller implements Initializable {
+
+    private String clientPath = "client/clientFiles";
+    private String serverPath = "server/sentFiles/";
+
+    public ListView<String> listView;
+    public ListView<String> listViewCloud;
+    public Button sendIn;
+    public Button sendOut;
+    public TextField input;
+    private DataInputStream in;
+    private DataOutputStream out;
+    private byte[] buffer = new byte[256];
+    int count;
+
+    public void sendOn(javafx.event.ActionEvent actionEvent) throws IOException {
+        String fileName = listView.getSelectionModel().getSelectedItem();
+        out.writeUTF(fileName);
+
+        long len = Files.size(Paths.get(clientPath, fileName));
+        out.writeLong(len);
+
+        try (FileInputStream fileInputStream = new FileInputStream(clientPath + "/" + fileName)) {
+            int read;
+            while (true) {
+                read = fileInputStream.read(buffer);
+                if (read == -1) {
+                    break;
+                }
+
+                out.write(buffer, 0, read);
+            }
+        }
+        out.flush();
+    }
+
+//Здесь попытался реализовать функцию скачивания файла с облака
+    public void sendOut(javafx.event.ActionEvent actionEvent) throws IOException {
+//        count++;
+
+        String fileName = listViewCloud.getSelectionModel().getSelectedItem();
+        out.writeUTF(fileName);
+
+        long len = Files.size(Paths.get(serverPath, fileName));
+        out.writeLong(len);
+
+        try (FileInputStream fin = new FileInputStream(serverPath + fileName)) {
+            int read;
+            while (true) {
+                read = fin.read(buffer);
+                if (read == -1) {
+                    break;
+                }
+
+                out.write(buffer, 0, read);
+            }
+        }
+        out.flush();
+    }
+
+    private void init() throws IOException {
+        Socket socket = new Socket("localhost", 8899);
+        in = new DataInputStream(socket.getInputStream());
+        out = new DataOutputStream(socket.getOutputStream());
+    }
+
+    public void initialize(URL location, ResourceBundle resources) {
+//        count++;
+//        String serverDirPath = serverPath + "/user" + count;
+
+        try {
+            List<String> clientFiles = Files.list(Paths.get(clientPath))
+                    .map(path -> path.getFileName().toString())
+                    .collect(Collectors.toList());
+
+            listView.getItems().addAll(clientFiles);
+
+            init();
+
+            //закончились идеи как реализовать инициализацию listView не по общей директории, а именно по пользовательской
+            List<String> serverFiles = Files.list(Paths.get(serverPath))
+                    .map(path -> path.getFileName().toString())
+                    .collect(Collectors.toList());
+
+            listViewCloud.getItems().addAll(serverFiles);
+
+            ReadHandler handler = new ReadHandler(in,
+                    message -> Platform.runLater(
+                            () -> input.setText(message)
+                    )
+            );
+            Thread readThread = new Thread(handler);
+            readThread.setDaemon(true);
+            readThread.start();
+
+            } catch (IOException e) {
+
+                System.out.println("socket error server");
+            }
+        }
+    }
+