37 lines
862 B
Java
37 lines
862 B
Java
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// threads/CollectionToStream.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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import onjava.*;
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import java.util.*;
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import java.util.stream.*;
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public class CollectionToStream {
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public static void main(String[] args) {
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List<String> strings =
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Stream.generate(new Rand.String(5))
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.limit(10)
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.collect(Collectors.toList());
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strings.forEach(System.out::println);
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// Convert to a Stream for many more options:
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String result = strings.stream()
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.map(String::toUpperCase)
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.map(s -> s.substring(2))
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.reduce(":", (s1, s2) -> s1 + s2);
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System.out.println(result);
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}
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}
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/* Output:
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btpen
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pccux
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szgvg
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meinn
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eeloz
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tdvew
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cippc
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ygpoa
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lkljl
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bynxt
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:PENCUXGVGINNLOZVEWPPCPOALJLNXT
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*/
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