(Java) SFTP Get/Set File Permission

Demonstrates how to set the permissions of a file on the SFTP server

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkSFtp sftp = new CkSFtp();

    // Connect to the SSH/SFTP server.  
    String hostname = "sftp.example.com";
    int port = 22;
    boolean success = sftp.Connect(hostname,port);
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.  This example uses password authenication.
    success = sftp.AuthenticatePw("myLogin","myPassword");
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    // After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp();
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    // Get the file permissions for the "hamlet.xml" file on the server.
    // The hamlet.xml file is located in the qa_data directory found under the HOME directory of the SSH user account.
    // We are passing the remote file path (we are not passing a file handle returned by a previous call to OpenFile).
    boolean isHandle = false;
    boolean followLinks = true;
    int permVal = sftp.GetFilePermissions("qa_data/hamlet.xml",followLinks,isHandle);
    if (permVal < 0) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    // Note: Filesystem permissions on Linux/Unix/MacOSX are typically written in octal (POSIX file permissions).  For example 0644 is octal.
    // To convert to decimal: octal 644 = 6*8^2 + 4*8 + 4 = 420 (decimal)
    // 
    // The server may return a permissions value (in octal) such as 100644.
    // The "100" indicates the file type, such as regular file or directory. 

    // Show the decimal value of the permissions
    System.out.println("decimal permissions value: " + permVal);

    // To set the file permissions, pass the integer value.
    // Let's change the permissions to 0664, which is 6*8^2 + 6*8 + 4 = 436 (decimal)
    success = sftp.SetPermissions("qa_data/hamlet.xml",isHandle,436);
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    System.out.println("Success.");
  }
}