MediaTracker m_track = new MediaTracker(this); 指applet
Image img = 把你的图片先弄成Image然后
m_track.addImage(img, 0);
ImageIcon anotherPic=new ImageIcon(img);
jButton1.setIcon(anotherPic);这样试试
Image img = 把你的图片先弄成Image然后
m_track.addImage(img, 0);
ImageIcon anotherPic=new ImageIcon(img);
jButton1.setIcon(anotherPic);这样试试
双缓冲容器类代码如下:
/*
* @(#)DoubleBufferPanel.java 1.2 97/01/14 Jeff Dinkins
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
*
*/
import java.awt.*;
import java.applet.*;public class DoubleBufferPanel extends Panel {
Image offscreen; /**
* null out the offscreen buffer as part of invalidation
*/
public void invalidate() {
super.invalidate();
offscreen = null;
} /**
* override update to *not* erase the background before painting
*/
public void update(Graphics g) {
paint(g);
} /**
* paint children into an offscreen buffer, then blast entire image
* at once.
*/
public void paint(Graphics g) {
if(offscreen == null) {
offscreen = createImage(getSize().width, getSize().height);
} Graphics og = offscreen.getGraphics();
og.setClip(0,0,getSize().width, getSize().height);
super.paint(og);
g.drawImage(offscreen, 0, 0, null);
og.dispose();
}}