yeet

WS23_24/Anwendungsentwicklung/src/Klausur_ueb/ThreadTraining.java

@@ -1,6 +1,10 @@
 package Klausur_ueb;
 
-import java.util.concurrent.atomic.AtomicInteger;
+
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 public class ThreadTraining {
     public static void main(String[] args) {
@@ -38,7 +42,7 @@ class MyThread2 extends Thread {
                 wait(100);
             } catch (InterruptedException e) {
                 throw new RuntimeException(e);
-            } catch (Exception e) {
+            } catch (Exception ignored) {
 
             }
 
@@ -57,4 +61,45 @@ class CoolNumber {
         return tmp;
 
     }
+}
+
+class ExecuteTask {
+    public static void main(String[] arg) {
+        ExecutorService executor = Executors.newFixedThreadPool(3);
+        int sumWartezeit = 1000;
+        java.util.Random zufall = new java.util.Random();
+        for (int i = 0; i < 10; i++) {
+            String name = "" + i;
+            int wartezeit = zufall.nextInt(1000);
+            sumWartezeit = sumWartezeit + wartezeit;
+            Runnable task = new Task(name, wartezeit);
+            System.out.println("Task " + name + " mit Wartezeit " + wartezeit + " wird an den Threadpool uebergeben.");
+            executor.execute(task);
+        }
+        try {
+            Thread.sleep(sumWartezeit);
+            executor.shutdown();
+            executor.awaitTermination(sumWartezeit, TimeUnit.MILLISECONDS);
+        } catch (InterruptedException e) {
+        }
+    }
+}
+
+class Task implements Runnable {
+    private String name;
+    private int wartezeit;
+
+    public Task(String name, int wartezeit) {
+        this.name = name;
+        this.wartezeit = wartezeit;
+    }
+
+    public void run() {
+        System.out.println("Task " + name + " beginnt um " + System.currentTimeMillis() + ".");
+        try {
+            Thread.sleep(wartezeit);
+        } catch (InterruptedException e) {
+        }
+        System.out.println("Task " + name + " ist fertig um " + System.currentTimeMillis() + " .");
+    }
 }