使用exe4j 制作java启动程序的 等候界面

import java.awt.Graphics; import java.awt.Image; import javax.swing.JPanel; public class JImagePane extends JPanel { private static final long serialVersionUID = -8251916094895167058L; /** * 居中 */ public static final String CENTRE = "Centre"; /** * 平铺 */ public static final String TILED = "Tiled"; /** * 拉伸 */ public static final String SCALED = "Scaled"; /** * 背景图片 */ private Image backgroundImage; /** * 背景图片显示模式 */ private String imageDisplayMode; /** * 背景图片显示模式索引（引入此属性有助于必要时扩展） */ private int modeIndex; /** * 构造一个没有背景图片的JImagePane */ public JImagePane() { this(null, CENTRE); } /** * 构造一个具有指定背景图片和指定显示模式的JImagePane * @param image 背景图片 * @param modeName 背景图片显示模式 */ public JImagePane(Image image, String modeName) { super(); setBackgroundImage(image); setImageDisplayMode(modeName); } /** * 设置背景图片 * @param image 背景图片 */ public void setBackgroundImage(Image image) { this.backgroundImage = image; this.repaint(); } /** * 获取背景图片 * @return 背景图片 */ public Image getBackgroundImage() { return backgroundImage; } /** * 设置背景图片显示模式 * @param modeName 模式名称，取值仅限于ImagePane.TILED ImagePane.SCALED ImagePane.CENTRE */ public void setImageDisplayMode(String modeName) { if(modeName != null) { modeName = modeName.trim(); //居中 if(modeName.equalsIgnoreCase(CENTRE)) { this.imageDisplayMode = CENTRE; modeIndex = 0; } //平铺 else if(modeName.equalsIgnoreCase(TILED)) { this.imageDisplayMode = TILED; modeIndex = 1; } //拉伸 else if(modeName.equalsIgnoreCase(SCALED)) { this.imageDisplayMode = SCALED; modeIndex = 2; } this.repaint(); } } /** * 获取背景图片显示模式 * @return 显示模式 */ public String getImageDisplayMode() { return imageDisplayMode; } /** * 绘制组件 * @see javax.swing.JComponent#paintComponent(Graphics) */ protected void paintComponent(Graphics g) { super.paintComponent(g); //如果设置了背景图片则显示 if(backgroundImage != null) { int width = this.getWidth(); int height = this.getHeight(); int imageWidth = backgroundImage.getWidth(this); int imageHeight = backgroundImage.getHeight(this); switch(modeIndex) { //居中 case 0: { int x = (width - imageWidth) / 2; int y = (height - imageHeight) / 2; g.drawImage(backgroundImage, x, y, this); break; } //平铺 case 1: { for(int ix = 0; ix < width; ix += imageWidth) { for(int iy = 0; iy < height; iy += imageHeight) { g.drawImage(backgroundImage, ix, iy, this); } } break; } //拉伸 case 2: { g.drawImage(backgroundImage, 0, 0, width, height, this); break; } } } } }