我想知道爲什麼setBackground()方法實際上並沒有使背景變黑。我覺得這與實現JApplet的類而不是Applet有關,但我無法弄清楚具體細節。這真的讓我煩惱。任何幫助表示讚賞!JApplet setBackground不工作
import javax.swing.*;
import java.awt.*;
public class Rocket extends JApplet
{
private final int APPLET_WIDTH = 200;
private final int APPLET_HEIGHT = 200;
private int[] xRocket = {100, 120, 120, 130, 130, 70, 70, 80, 80};
private int[] yRocket = {15, 40, 115, 125, 150, 150, 125, 115, 40};
private int[] xWindow = {95, 105, 110, 90};
private int[] yWindow = {45, 45, 70, 70};
private int[] xFlame = {70, 70, 75, 80, 90, 100, 110, 115, 120, 130, 130};
private int[] yFlame = {155, 170, 165, 190, 170, 175, 160, 185, 160, 175, 155};
public void init()
{
setBackground (Color.black);
setSize (APPLET_WIDTH, APPLET_HEIGHT);
}
public void paint (Graphics page)
{
page.setColor (Color.cyan);
page.fillPolygon (xRocket, yRocket, xRocket.length);
page.setColor (Color.gray);
page.fillPolygon (xWindow, yWindow, xWindow.length);
page.setColor (Color.red);
page.drawPolyline (xFlame, yFlame, xFlame.length);
}
}
'private final int APPLET_WIDTH = 200;'一個applet的大小在加載它的HTML中設置。不要試圖強制代碼中的大小。 –