Setting the Screen Size, Refresh Rate, or Number of Colors : GraphicsEnvironment « 2D Graphics « Java Tutorial

1. Java Tutorial
2. 2D Graphics
3. GraphicsEnvironment

import java.awt.DisplayMode;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;

public class Main {
  public static void main(String[] argv) throws Exception {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gs = ge.getDefaultScreenDevice();

    boolean canChg = gs.isDisplayChangeSupported();
    if (canChg) {
      DisplayMode displayMode = gs.getDisplayMode();
      int screenWidth = 640;
      int screenHeight = 480;
      int bitDepth = 8;
      displayMode = new DisplayMode(screenWidth, screenHeight, bitDepth, displayMode
          .getRefreshRate());
      try {
        gs.setDisplayMode(displayMode);
      } catch (Throwable e) {
        gs.setFullScreenWindow(null);
      }
    }
  }
}