How to read all the files in a folder through Java?

解決方案

public void listFilesForFolder(final File folder) {

for (final File fileEntry : folder.listFiles()) {

if (fileEntry.isDirectory()) {

listFilesForFolder(fileEntry);

} else {

System.out.println(fileEntry.getName());

}

}

}

final File folder = new File("/home/you/Desktop");

listFilesForFolder(folder);

Files.walk API is available from Java 8.

try (Stream paths = Files.walk(Paths.get("/home/you/Desktop"))) {

paths

.filter(Files::isRegularFile)

.forEach(System.out::println);

}

The example uses try-with-resources pattern recommended in API guide. It ensures that no matter circumstances the stream will be closed.

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