OnJava8-Examples/files/DirectoryDemo.java

// files/DirectoryDemo.java
// <20>2016 MindView LLC: see Copyright.txt
// Sample use of Directory utilities.
import java.io.*;
import onjava.*;

public class DirectoryDemo {
  public static void main(String[] args) {
    // All directories:
    PPrint.pprint(Directory.walk(".").dirs);
    // All files beginning with 'T'
    for(File file : Directory.local(".", "T.*"))
      System.out.println(file);
    System.out.println("----------------------");
    // All Java files beginning with 'T':
    for(File file : Directory.walk(".", "T.*\\.java"))
      System.out.println(file);
    System.out.println("======================");
    // Class files containing "Z" or "z":
    for(File file : Directory.walk(".",".*[Zz].*\\.class"))
      System.out.println(file);
  }
}
/* Output:
[.\xfiles]
.\TestEOF.class
.\TestEOF.java
.\TransferTo.class
.\TransferTo.java
----------------------
.\TestEOF.java
.\TransferTo.java
.\xfiles\ThawAlien.java
======================
.\FreezeAlien.class
.\GZIPcompress.class
.\ZipCompress.class
*/