Java I/O How to - List the Directory Contents recursively

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Question

We would like to know how to list the Directory Contents recursively.

Answer

//w ww. ja va2 s.co  m
import java.io.File;
import java.util.Arrays;

public class Main {
  static int indentLevel = -1;

  static void listPath(File path) {
    File files[]; 
    indentLevel++; 

    files = path.listFiles();

    Arrays.sort(files);
    for (int i = 0, n = files.length; i < n; i++) {
      for (int indent = 0; indent < indentLevel; indent++) {
        System.out.print("  ");
      }
      System.out.println(files[i].toString());
      if (files[i].isDirectory()) {

        listPath(files[i]);
      }
    }
    indentLevel--; 
  }

  public static void main(String args[]) {
    listPath(new File("c:\\"));
  }
}

The code above generates the following result.

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