将画布拉伸到JFrame的大小

Question

我的任务是使用128*128 px对游戏进行编程。所以我开始准备Game Java Framework，一切都很好：我有一个JFrame，里面是Canvas，我可以画画。但我无法正确设置尺寸。我必须使用128*128 px，但如果框架大小相同，那么它太小了，所以我需要扩展它。

但是如果我向上缩放框架的大小，则画布太小并且不再填充它。如果我只是给它与Frame相同的大小，那么我将不再使用128*128 px。那么我怎样才能将正常情况画到我的小画布上并随后进行扩展呢？

package de.gaminggears.communitygame;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferStrategy;

import de.gaminggears.communitygame.display.Display;

public class Game implements Runnable{

private Display display;
public int width, height;
public String title;

private boolean running = false;
private Thread thread;

private BufferStrategy bs;
private Graphics g;


public Game(String title,int width, int height){
    this.height = height;
    this.width = width;
    this.title = title;

}

private void init(){
    display = new Display(title, width, height);
}

private void tick(){

}

private void render(){
    bs = display.getCanvas().getBufferStrategy();
    if(bs == null){
        display.getCanvas().createBufferStrategy(3);
        return;
    }
    g = bs.getDrawGraphics();
    Graphics2D g2d = (Graphics2D) g;
    //Clear Screen
    g2d.clearRect(0, 0, width, height);
    //Draw Here!

    g2d.setColor(Color.RED);
    g2d.fillRect(10, 50, 50, 70);
    g2d.fillRect(0, 0, 10, 10);

    //End Drawing

    g2d.scale(5, 5);
    bs.show();
    g.dispose();
}

public void run(){

    init();

    while(running){
        tick();
        render();
    }
    stop();
}


public synchronized void start(){
    if(running)
        return;
    running = true;
    thread = new Thread(this);
    thread.start();
}

public synchronized void stop(){
    if(!running)
        return;
    running = false;
    try {
        thread.join();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

}