Head First设计模式随书代码

package java.applet; import java.awt.*; import java.awt.image.ColorModel; import java.net.URL; import java.net.MalformedURLException; import java.util.Hashtable; import java.util.Locale; public class Applet extends Panel { transient private AppletStub stub; public final void setStub(AppletStub stub) { this.stub = (AppletStub)stub; } public boolean isActive() { if (stub != null) { return stub.isActive(); } else { // If stub field not filled in, applet never active return false; } } public URL getDocumentBase() { return stub.getDocumentBase(); } public URL getCodeBase() { return stub.getCodeBase(); } public String getParameter(String name) { return stub.getParameter(name); } public AppletContext getAppletContext() { return stub.getAppletContext(); } public void resize(int width, int height) { Dimension d = size(); if ((d.width != width) || (d.height != height)) { super.resize(width, height); if (stub != null) { stub.appletResize(width, height); } } } public void resize(Dimension d) { resize(d.width, d.height); } public void showStatus(String msg) { getAppletContext().showStatus(msg); } public Image getImage(URL url) { return getAppletContext().getImage(url); } public Image getImage(URL url, String name) { try { return getImage(new URL(url, name)); } catch (MalformedURLException e) { return null; } } public AudioClip getAudioClip(URL url) { return getAppletContext().getAudioClip(url); } public AudioClip getAudioClip(URL url, String name) { try { return getAudioClip(new URL(url, name)); } catch (MalformedURLException e) { return null; } } public String getAppletInfo() { return null; } public Locale getLocale() { Locale locale = super.getLocale(); if (locale == null) { return Locale.getDefault(); } return locale; } public String[][] getParameterInfo() { return null; public void play(URL url) { AudioClip clip = getAudioClip(url); if (clip != null) { clip.play(); } } public void play(URL url, String name) { AudioClip clip = getAudioClip(url, name); if (clip != null) { clip.play(); } } public void init() { } public void start() { } public void stop() { } public void destroy() { } }