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BAEL-4755: Add Files.list example (#10356)

This commit is contained in:
kwoyke 2020-12-30 12:39:45 +01:00 committed by GitHub
parent fc7470b82a
commit 078169109d
2 changed files with 18 additions and 2 deletions
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13
core-java-modules/core-java-io-2/src/main/java/com/baeldung/listfiles/ListFiles.java
View File

@ -24,9 +24,20 @@ public class ListFiles {
.collect(Collectors.toSet());
}
public Set<String> listFilesUsingFilesList(String dir) throws IOException {
try (Stream<Path> stream = Files.list(Paths.get(dir))) {
return stream
.filter(file -> !Files.isDirectory(file))
.map(Path::getFileName)
.map(Path::toString)
.collect(Collectors.toSet());
}
}
public Set<String> listFilesUsingFileWalk(String dir, int depth) throws IOException {
try (Stream<Path> stream = Files.walk(Paths.get(dir), depth)) {
return stream.filter(file -> !Files.isDirectory(file))
return stream
.filter(file -> !Files.isDirectory(file))
.map(Path::getFileName)
.map(Path::toString)
.collect(Collectors.toSet());

7
core-java-modules/core-java-io-2/src/test/java/com/baeldung/listfiles/ListFilesUnitTest.java
View File

@ -25,10 +25,15 @@ public class ListFilesUnitTest {
};
@Test
public void givenDir_whenUsingJAVAIO_thenListAllFiles() throws IOException {
public void givenDir_whenUsingJAVAIO_thenListAllFiles() {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingJavaIO(DIRECTORY));
}
@Test
public void givenDir_whenUsingFilesList_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFilesList(DIRECTORY));
}
@Test
public void givenDir_whenWalkingTree_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFileWalk(DIRECTORY,DEPTH));