June 2012
Intermediate to advanced
136 pages
2h 50m
German
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Regex-Klassen und -Interfaces
Funktionen für reguläre Ausdrücke werden im Wesentlichen von zwei Klassen, java.util.regex.Pattern und java.util.regex.Matcher, einer Exception, java.util.regex.PatternSyntaxException, und einem Interface, CharSequence, gekapselt. Darüber hinaus implementiert die String-Klasse das Interface CharSequence, um elementare Pattern-Matching-Methoden zu bieten. Pattern-Objekte sind kompilierte reguläre Ausdrücke, die auf alle CharSequence-Objekte angewandt werden können. Ein Matcher ist ein zustandsbehaftetes Objekt, das in einem String (oder jedem CharSequence implementierenden Objekt) nach einem oder mehreren Vorkommen von Pattern sucht.
Backslashes in Regex-String-Literalen müssen über Escape-Zeichen geschützt werden. ...
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