Add chapters 18-20 for the java book

1 files changed, 29 insertions, 0 deletions

diff --git a/Java-Kompendium/kap20/1/src/main/java/Server.java b/Java-Kompendium/kap20/1/src/main/java/Server.java
new file mode 100644
index 0000000..1474b9c
--- /dev/null
+++ b/Java-Kompendium/kap20/1/src/main/java/Server.java
@@ -0,0 +1,29 @@
+import java.io.*;
+import java.net.Socket;
+import java.net.ServerSocket;
+
+public class Server extends Thread {
+    @Override
+    public void run() {
+        try {
+            ServerSocket serverSocket = new ServerSocket(2000);
+            Socket client = serverSocket.accept();
+            InputStreamReader isr = new InputStreamReader(client.getInputStream());
+            BufferedReader br = new BufferedReader(isr);
+
+            String nachricht1 = br.readLine();
+            String nachricht2 = br.readLine();
+
+            int wert1 = Integer.parseInt(nachricht1);
+            int wert2 = Integer.parseInt(nachricht2);
+            int ergebnis = wert1 * wert2;
+
+            OutputStreamWriter osw = new OutputStreamWriter(client.getOutputStream());
+            PrintWriter pw = new PrintWriter(osw);
+            pw.print(ergebnis + "\n");
+            pw.flush();
+        } catch (IOException e) {
+            System.out.println(e);
+        }
+    }
+}