Java by API/java.awt/FileDialog

FileDialog: getFile()

import java.awt.Button;
import java.awt.FileDialog;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class MainClass extends Frame {
  FileDialog fc;
  MainClass() {
    super("MainClass");
    setSize(200, 200);
    fc = new FileDialog(this, "Choose a file", FileDialog.LOAD);
    fc.setDirectory("C:\\");
    Button b;
    add(b = new Button("Browse...")); // Create and add a Button
    b.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        fc.setVisible(true);
        String fn = fc.getFile();
        if (fn == null)
          System.out.println("You cancelled the choice");
        else
          System.out.println("You chose " + fn);
      }
    });
  }
  public static void main(String[] a) {
    new MainClass().setVisible(true);
  }
}

FileDialog: setDirectory(String dir)

import java.awt.Button;
import java.awt.FileDialog;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class MainClass extends Frame {
  FileDialog fc;
  MainClass() {
    super("MainClass");
    setSize(200, 200);
    fc = new FileDialog(this, "Choose a file", FileDialog.LOAD);
    fc.setDirectory("C:\\");
    Button b;
    add(b = new Button("Browse...")); // Create and add a Button
    b.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        fc.setVisible(true);
        String fn = fc.getFile();
        if (fn == null)
          System.out.println("You cancelled the choice");
        else
          System.out.println("You chose " + fn);
      }
    });
  }
  public static void main(String[] a) {
    new MainClass().setVisible(true);
  }
}

new FileDialog(Frame parent, String title, int mode)

import java.awt.Button;
import java.awt.FileDialog;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class MainClass extends Frame {
  FileDialog fc;
  MainClass() {
    super("MainClass");
    setSize(200, 200);
    fc = new FileDialog(this, "Choose a file", FileDialog.LOAD);
    fc.setDirectory("C:\\");
    Button b;
    add(b = new Button("Browse...")); // Create and add a Button
    b.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        fc.setVisible(true);
        String fn = fc.getFile();
        if (fn == null)
          System.out.println("You cancelled the choice");
        else
          System.out.println("You chose " + fn);
      }
    });
  }
  public static void main(String[] a) {
    new MainClass().setVisible(true);
  }
}