aufgabe 3

praktikum-5/aufgabe3/Client.java

@@ -0,0 +1,38 @@
+package aufgabe3;
+
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.util.Scanner;
+import java.io.OutputStreamWriter;
+import java.io.IOException;
+
+public class Client {
+    private int port;
+
+    public Client(int port) {
+        this.port = port;
+    }
+
+    public void send(String msg) throws IOException {
+        var socket = new Socket("localhost", port);
+        var out = socket.getOutputStream();
+        var writer = new OutputStreamWriter(out);
+        writer.write(msg);
+        writer.flush();
+        writer.close();
+    }
+
+    public static void main(String[] args) {
+        try {
+            int port = 4711;
+            var client = new Client(port);
+            var reader = new Scanner(System.in);
+            while (true) {
+                var msg = reader.nextLine();
+                client.send(msg);
+            }
+        } catch (Exception e) {
+            System.out.println(e);
+        }
+    }
+}

praktikum-5/aufgabe3/Server.java

@@ -0,0 +1,42 @@
+package aufgabe3;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+public class Server {
+    private ServerSocket socket;
+
+    public Server(ServerSocket socket) {
+        this.socket = socket;
+    }
+
+    public String receive() throws IOException {
+        var client = socket.accept();
+        var in = client.getInputStream();
+        var reader = new InputStreamReader(in);
+        var result = "";
+        var curr = reader.read();
+        while (curr != -1) {
+            result += (char)curr;
+            curr = reader.read();
+        }
+        return result;
+    }
+
+    public static void main(String[] args) {
+        try {
+            int port = 4711;
+            var socket = new ServerSocket(port);
+            var server = new Server(socket);
+            System.out.println("Listening on port " + port);
+            while (true) {
+                var msg = server.receive();
+                System.out.println("Received message: " + msg);
+            }
+        } catch (Exception e) {
+            System.out.println(e);
+        }
+    }
+}