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Java How to Program, Early Objects, 11th Edition
book

Java How to Program, Early Objects, 11th Edition

by Paul J. Deitel, Harvey Deitel
June 2017
Beginner
1296 pages
69h 23m
English
Pearson
Content preview from Java How to Program, Early Objects, 11th Edition

... corresponding Long value is the number of occurrences of that word. The pipeline performs the following tasks:

  • Line 18 calls Files method lines (added in Java SE 8) which returns a Stream<String> that reads lines of text from a file and returns each line as a String. Class Files (package java.nio.file) is one of many classes throughout the Java APIs which provide methods that return Streams.

  • Line 19 uses Stream method flatMap to break each line of text into its separate words. Method flatMap receives a Function that maps an object into a stream of elements. In this case, the object is a String containing words and the result is a Stream<String> for the individual words. The lambda in line 19 passes the String representing a line of text to ...

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Publisher Resources

ISBN: 9780134751962