Неотвечает окно при использовании Canvas

package drmgc.CiViL.client;
 
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
 
import javax.swing.JFrame;
 
@SuppressWarnings("serial")
public final class CiViL extends Canvas implements Runnable {
    public final static String VERSION = "InDev";
    
    private ContentLoader loader__;
    private Sprite spriteHero__;
    
    private int heroPosX = 0;
    private int heroPosY = 0;
 
    protected void init() {
        loader__ = new ContentLoader("assets/");
        spriteHero__ = loader__.loadSprite("img/building_barrack.x2.png");
    }
    
    protected void update(long _delta) {
        if(KeyInputMan.kbArrowLeft)
            heroPosX--;
        else if(KeyInputMan.kbArrowRight)
            heroPosX++;
        
        if(KeyInputMan.kbArrowDown)
            heroPosY--;
        else if(KeyInputMan.kbArrowUp)
            heroPosY++;
    }
    
    public void draw(Graphics _gfx) {
        spriteHero__.draw(_gfx, heroPosX, heroPosY);
    }
    
    private BufferStrategy bs__;
    private Graphics gfx__;
    protected void render() {
        this.bs__ = getBufferStrategy();
        if(this.bs__ == null) {
            createBufferStrategy(2);
            requestFocus();
            return;
        }
        
        this.gfx__ = this.bs__.getDrawGraphics();
        
        this.gfx__.setColor(Color.black);
        this.gfx__.fillRect(0, 0, getWidth(), getHeight());
        
        this.draw(this.gfx__);
        
        this.gfx__.dispose();
        
        this.bs__.show();
    }
    
    private boolean running__ = true;
    
    @Override
    public void run() {
        long _lastTime_ = System.currentTimeMillis();
        long _delta_;
        
        init();
        
        while(running__) {
            _delta_ = System.currentTimeMillis() - _lastTime_;
            _lastTime_ = System.currentTimeMillis();
            render();
            update(_delta_);
        }
    }
    
    public void start() {
        running__ = true;
        new Thread(this).start();
    }
    
    public static final int WIDTH = 1024;
    public static final int HEIGHT = 576;
    public static final String TITLE = "CiViL " + VERSION;
    
    public static void main(String[] _args) {
        System.out.println("CiViL " + VERSION);
    
        CiViL _game_ = new CiViL();
        _game_.setPreferredSize(new Dimension(WIDTH, HEIGHT));
        
        JFrame _window_ = new JFrame(TITLE);
        _window_.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        _window_.setLayout(new BorderLayout());
        _window_.add(_game_, BorderLayout.CENTER);
        _window_.addKeyListener(new KeyInputMan());
        _window_.pack();
        _window_.setResizable(false);
        _window_.setLocation((EnvConfig.SCREEN.width / 2) - (WIDTH / 2),
                             (EnvConfig.SCREEN.height / 2) - (HEIGHT / 2));
        _window_.setVisible(true);
 
        _game_.start();
        
        while(true);
    }
}

package drmgc.CiViL.client;
 
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
 
public class KeyInputMan extends KeyAdapter {
    public static boolean kbArrowLeft = false;
    public static boolean kbArrowRight = false;
    public static boolean kbArrowUp = false;
    public static boolean kbArrowDown = false;
    
    @Override
    public void keyPressed(KeyEvent _event) {
        if(_event.getKeyCode() == KeyEvent.VK_LEFT)
            kbArrowLeft = true;
        if(_event.getKeyCode() == KeyEvent.VK_RIGHT)
            kbArrowRight = true;
        if(_event.getKeyCode() == KeyEvent.VK_UP)
            kbArrowUp = true;
        if(_event.getKeyCode() == KeyEvent.VK_DOWN)
            kbArrowDown = true;
        
        System.out.println("Key pressed");
    }
    @Override
    public void keyReleased(KeyEvent _event) {
        if(_event.getKeyCode() == KeyEvent.VK_LEFT)
            kbArrowLeft = false;
        if(_event.getKeyCode() == KeyEvent.VK_RIGHT)
            kbArrowRight = false;
        if(_event.getKeyCode() == KeyEvent.VK_UP)
            kbArrowUp = false;
        if(_event.getKeyCode() == KeyEvent.VK_DOWN)
            kbArrowDown = false;
        System.out.println("Key released");
    }
}