Initial commit

Uebung22Threads.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
+

src/de/itstall/Main.java

+package de.itstall;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+
+	public static void main(String[] args) {
+		List<Thread> threadList = new ArrayList<>();
+		int ausfuehrungen = 25;
+
+		try {
+			Thread.sleep(20000);
+		} catch (InterruptedException ignored) {
+		}
+
+        System.out.println("Starte Messung");
+		long start = System.currentTimeMillis();
+
+		for (int i = 0; i < ausfuehrungen; i++) {
+			Thread th = new Thread(new Summierer(i));
+			th.start();
+			threadList.add(th);
+		}
+
+		for (Thread thread : threadList) {
+			try {
+				thread.join();
+			} catch (InterruptedException ignored) {
+			}
+		}
+
+		long dauer = System.currentTimeMillis() - start;
+
+		System.out.println("Dauer der Abfertigung: " + dauer + " Milisekunden");
+	}
+}

src/de/itstall/Summierer.java

+package de.itstall;
+
+public class Summierer implements Runnable {
+	public int threadNumber;
+
+	public Summierer(int threadNumber) {
+		this.threadNumber = threadNumber;
+	}
+
+	@Override
+	public void run() {
+		int i = 0;
+
+		while(i < Integer.MAX_VALUE) {
+			i++;
+			if((i % 250000000 == 0)) {
+				System.out.println("Zwischenergebnis " + this.threadNumber + ": " + i);
+			}
+		}
+		System.out.println("Thread " + this.threadNumber +  ": " + i);
+	}
+
+}