import java.awt.*;
import javax.swing.*;

/**
 * Simple graphics window (based on ex. 7-1 in Core Java 8th ed.)
 * @author Hal Perkins
 */
public class SimpleFrameMain {

  /** create a frame and display it */
  public static void main(String[] args) {
    JFrame frame = new JFrame("A Window");
    frame.setSize(300, 200);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
  }
}