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我在Swing畫一個棋盤。我創建了瓷磚（jpanel），然後嘗試將組件添加到電路板（另一個jpanel）。每次添加一個貼圖時，我都嘗試設置一種顏色，無論是黑色還是白色。董事會有GridLayout。電路板確實添加了64個瓷磚，但只有一個瓷磚獲得了一種顏色，其餘的都獲得了默認顏色。我嘗試將瓷磚（jpanel）更改爲按鈕（JButton）（以查看是否將組件添加到板上），並且該程序確實爲板添加了64個按鈕。所以我猜測在佈局和添加組件方面沒有問題，而是需要更新顏色？JPanel裏面的着色JPanel元素
那麼當我將它們添加到更大的Jpanel（Board）時，如何更改這些較小的jpanel（tile）的顏色？
程序如下（不介意的配色方案，我其實不願意棋盤）：
class Tile extends JPanel{
private final int width = 50;
private final int height = 50;
Color tileColor;
int xPos, yPos;
public Tile(int xPos, int yPos, Color tileColor){
this.xPos = xPos;
this.yPos = yPos;
this.tileColor = tileColor;
}
public Dimension getPreferredSize(){
return new Dimension(width, height);
}
protected void paintComponent(Graphics g){
super.paintComponent(g);
g.setColor(tileColor);
g.fillRect(xPos, yPos, getWidth(), getHeight());
}
}
class Board extends JPanel{
private final int width = 400;
private final int height = 400;
private int numTiles = 8;
private final Color black = Color.BLACK;
private final Color white = Color.WHITE;
private final int hGap = 2;
private final int vGap = 2;
public Board(){
setLayout(new GridLayout(numTiles, numTiles,hGap, vGap));
setBackground(Color.CYAN);
Color tileColor;
int yPos = 0;
for(int i = 0; i < numTiles; i++){
int xPos = 0;
for(int j = 0; j < numTiles; j++){
if(j % 2 == 0)
tileColor = black;
else
tileColor = white;
add(new Tile(xPos, yPos, tileColor));
xPos += 50;
}
yPos += 50;
}
}
public Dimension getPreferredSize(){
return new Dimension(width,height);
}
}