Search for files recursively

   
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.util.Collection;
import java.util.Iterator;

public class Main {
  public static void main(String[] args) throws Exception {
    File root = new File("c:\\");

    String[] extensions = { "xml", "java", "dat" };
    boolean recursive = true;

    Collection files = FileUtils.listFiles(root, extensions, recursive);

    for (Iterator iterator = files.iterator(); iterator.hasNext();) {
      File file = (File) iterator.next();
      System.out.println("File = " + file.getAbsolutePath());
    }
  }
}

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Search for files recursively : Files « File Input Output « Java

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