// files/Find.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// {ExcludeFromGradle}
import java.nio.file.*;

public class Find {
 public static void
 main(String[] args) throws Exception {
 Path test = Paths.get("test");
 Directories.refreshTestDir();
 Directories.populateTestDir();
 // Creating a *directory*, not a file:
 Files.createDirectory(test.resolve("dir.tmp"));

 PathMatcher matcher = FileSystems.getDefault()
 .getPathMatcher("glob:**/*.{tmp,txt}");
 Files.walk(test)
 .filter(matcher::matches)
 .forEach(System.out::println);
 System.out.println("***************");

 PathMatcher matcher2 = FileSystems.getDefault()
 .getPathMatcher("glob:*.tmp");
 Files.walk(test)
 .map(Path::getFileName)
 .filter(matcher2::matches)
 .forEach(System.out::println);
 System.out.println("***************");

 Files.walk(test) // Only look for files
 .filter(Files::isRegularFile)
 .map(Path::getFileName)
 .filter(matcher2::matches)
 .forEach(System.out::println);
 }
}
/* Output:
test\bag\foo\bar\baz5208762845883213974円.tmp
test\bag\foo\bar\baz\File.txt
test\bar\baz\bag\foo7918367201207778677円.tmp
test\bar\baz\bag\foo\File.txt
test\baz\bag\foo\bar8016595521026696632円.tmp
test\baz\bag\foo\bar\File.txt
test\dir.tmp
test\foo\bar\baz\bag5832319279813617280円.tmp
test\foo\bar\baz\bag\File.txt
***************
5208762845883213974.tmp
7918367201207778677.tmp
8016595521026696632.tmp
dir.tmp
5832319279813617280.tmp
***************
5208762845883213974.tmp
7918367201207778677.tmp
8016595521026696632.tmp
5832319279813617280.tmp
*/