September 2021
Intermediate to advanced
424 pages
9h 18m
German
Content preview from Einfach Java
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4Arrays
In diesem Kapitel lernen wir Arrays im Detail kennen. Sie bilden die Grundlage für viele andere Datenstrukturen. Arrays werden dazu verwendet, mehrere Dinge gleichen Typs zu speichern, etwa eine Menge von Namen oder Personen. Etwas unpraktisch wäre es, müsste man jeweils eine eigene Variable für jedes Element definieren.
4.1Schnelleinstieg
4.1.1Gebräuchliche Aktionen
Definition eines Arrays
Genau wie andere Variablen besitzen Arrays zunächst einmal einen Typ, allerdings gefolgt von eckigen Klammern und dem gewünschten Namen (Bezeichner). Eine Deklaration eines Arrays von Strings mit Vornamen sieht folgendermaßen aus:
String[] firstnames
Nun müssen wir das Ganze aber noch mit Leben bzw. Werten füllen. Dazu können wir eine Initialisierung ...
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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.