Screen Tearing - GameWindow.java

GameWindow.java

import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JScrollPane;

public class GameWindow extends JFrame {

    private JScrollPane viewer;
    private GameCanvas canvas;
    public static final Dimension SIZE = new Dimension(800, 600);
    
    public GameWindow() {
        super();
        canvas = new GameCanvas();
        viewer = new JScrollPane(canvas);
        viewer.setPreferredSize(SIZE);
        viewer.remove(viewer.getHorizontalScrollBar());
        viewer.remove(viewer.getVerticalScrollBar());
        viewer.setWheelScrollingEnabled(false);
        getContentPane().add(viewer);
        
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setResizable(false);
        setPreferredSize(SIZE);
        setVisible(true);
        canvas.initBufferStrat();
    }

    public void render() {
        canvas.render();
    }

}