September 2016
Intermediate to advanced
378 pages
7h 29m
German
Content preview from Nebenläufige Programmierung mit JavaBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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2 Das Thread-Konzept von Java
Die Unterstützung der Thread-Programmierung ist ein zentraler Bestandteil der Java-Sprachdefinition. Man erkennt dies sowohl an der Klasse Thread, die im Paket java.lang zu finden ist, als auch an Schlüsselwörtern, wie z.B. synchronized und volatile. Durch diese wichtige Sprachverankerung können portable Multithreaded-Anwendungen implementiert werden1.
Da es mit Java sehr einfach ist, Threads zu erzeugen und zu starten, werden sie auch gerne eingesetzt und mitunter ohne wirklichen Nutzen. Insbesondere möchte man ja die Ressourcen eines Multicore-Rechners ausschöpfen. Dabei machen sich viele Entwickler wenig Gedanken darüber, dass man mit dem Einsatz von Threads den Programmfluss aufspaltet, asynchrone Programmfäden ...
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