Java 模糊的图像而不是纯色？

我使用BuffereImage作为我的背景，但是当我用下面的代码复制它使它变大时，为什么我的图像代码会产生模糊的边缘而不是纯色

public final class State_Play extends State_Template {
    private BufferedImage background;
    private int[] pixelelements;
    private int width,height;

    State_Play(){
        init();
    }

    public void init(){
        width=8; //Configuration.appwidth,
        height=6; //Configuration.appheight
        background=new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); 
        pixelelements=((DataBufferInt) background.getRaster().getDataBuffer()).getData();
        maketuringarray();
    }

    public void maketuringarray(){      
       int singlecolor=new Random().nextInt();
       pixelelements[new Random().nextInt(width*height)]=singlecolor | 0xFF000000;  
    }

    @Override
    public void update() {
       maketuringarray(); 
    }

    @Override
    public void render(Graphics g) {
        g.drawImage(background, 0, 0, Configuration.appwidth, Configuration.appheight, null);  
    }

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代替纯色？

最可能的问题是平台上的插值默认设置为立方或双立方。这将使放大变得模糊

public final class State_Play extends State_Template {
    private BufferedImage background;
    private int[] pixelelements;
    private int width,height;

    State_Play(){
        init();
    }

    public void init(){
        width=8; //Configuration.appwidth,
        height=6; //Configuration.appheight
        background=new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); 
        pixelelements=((DataBufferInt) background.getRaster().getDataBuffer()).getData();
        maketuringarray();
    }

    public void maketuringarray(){      
       int singlecolor=new Random().nextInt();
       pixelelements[new Random().nextInt(width*height)]=singlecolor | 0xFF000000;  
    }

    @Override
    public void update() {
       maketuringarray(); 
    }

    @Override
    public void render(Graphics g) {
        g.drawImage(background, 0, 0, Configuration.appwidth, Configuration.appheight, null);  
    }

显式将其设置为“最近邻”，以获得所需的“块状像素”效果（如果我理解正确）：

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请发布一个“最小的、完整的、可验证的示例”-因为这就是放大的作用？？我的答案是否有问题？