网格停止在10 x 50而不是50 x 50

Question

我试图使用绘图面板生成一个50x50的网格，但由于某种原因，它停在了50x10。我正在使用Intellij，如果这是相关的。

protected void paintComponent(Graphics g){
    super.paintComponent(g);

    int theChangingX = 0;
    int theChangingY = 0;

    for (int row = 0; row <= 2500 + 1; row++){
        g.setColor(Color.red);
        g.drawRect(theChangingX,theChangingY, pixelsize, pixelsize );
        theChangingX+=10;
        for (int col = 0; col<=2500 + 1; col++ ){
            if (theChangingX ==2500){
                theChangingY+=10;
                theChangingX =-10;
            }
        }
    }
}

Answer 1

我认为你把代码弄得太复杂了，我会这样做的：

 protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    g.setColor(Color.red);
    for (int col = 0; col < 50; col++) {
        for (int row = 0; row < 50; row++) {
            g.drawRect(row * cellSize, col * cellSize, cellSize, cellSize);
        }
    }
}

Answer 2

尝尝这个

protected void paintComponent(Graphics g){
    super.paintComponent(g);

    int theChangingX = 0;
    int theChangingY = 0;

    for (int row = 0; row < 50; row++){
        g.setColor(Color.red);
        theChangingX = row*10;

        for (int col = 0; col < 50 ;col++ ){
            theChangingY = col*10;
            g.drawRect(theChangingX,theChangingY, pixelsize, pixelsize );
        }
    }
}