September 2018
Intermediate to advanced
410 pages
12h 43m
German
Content preview from Effective Java, 3rd EditionBecome 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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3Methoden, die allen Objektengemeinsam sind
Auch wenn Object eine konkrete Klasse ist, dient sie primär der Erweiterung. Alle ihre nicht-finalen Methoden (equals, hashCode, toString, clone und finalize) haben explizite allgemeine Verträge, da sie dafür ausgelegt sind, überschrieben zu werden. Es obliegt der jeweiligen Klasse, die diese Methoden überschreibt, deren jeweilige Verträge einzuhalten. Macht sie dies nicht, funktionieren andere Klassen, die von diesen Verträgen abhängen (wie HashMap und HashSet), nicht mehr richtig mit dieser Klasse zusammen.
In diesem Kapitel erfahren Sie, wann und wie Sie die nicht-finalen Object-Methoden überschreiben. Auf die finalize-Methode verzichten wir in diesem Kapitel, da diese bereits in Thema 8 besprochen ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.