Java Applet_java_其他_其他下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/626ff1b640256a40ceb02a0b/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626ff1b640256a40ceb02a0b/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">第<span class="_ _0"> </span><span class="ff2 sc1">13<span class="_ _0"> </span></span>章<span class="ff2 sc1"> <span class="ff3 fs1">Java Applet</span></span></div><div class="t m0 x1 h4 y3 ff1 fs2 fc0 sc0 ls0 ws0">实验<span class="_ _1"> </span><span class="ff4 sc1">1 </span>播放音频</div><div class="t m0 x1 h5 y4 ff2 fs3 fc0 sc1 ls0 ws0">1<span class="ff1 sc0">．答案：</span></div><div class="t m0 x1 h6 y5 ff1 fs4 fc0 sc1 ls0 ws0">【代码<span class="_ _2"> </span><span class="ff3">1</span>】：<span class="_ _0"> </span><span class="ff3"> <span class="fs3">clip.stop();</span></span></div><div class="t m0 x1 h6 y6 ff1 fs4 fc0 sc1 ls0 ws0">【代码<span class="_ _2"> </span><span class="ff3">2</span>】：<span class="_ _0"> </span><span class="ff3"> <span class="fs3">clip.play();</span></span></div><div class="t m0 x1 h6 y7 ff1 fs4 fc0 sc1 ls0 ws0">【代码<span class="_ _2"> </span><span class="ff3">3</span>】：<span class="_ _0"> </span><span class="ff3"> <span class="fs3">clip.loop();</span></span></div><div class="t m0 x1 h6 y8 ff1 fs4 fc0 sc1 ls0 ws0">【代码<span class="_ _2"> </span><span class="ff3">4</span>】：<span class="_ _0"> </span><span class="ff3"> <span class="fs3">clip.stop();</span></span></div><div class="t m0 x1 h5 y9 ff2 fs3 fc0 sc1 ls0 ws0">2<span class="ff1 sc0">．模板代码</span><span class="fs4"> </span></div><div class="t m0 x2 h7 ya ff2 fs3 fc0 sc1 ls0 ws0">PlayAudioClip.java</div><div class="t m0 x3 h8 yb ff3 fs4 fc0 sc1 ls0 ws0">import java.applet.*;</div><div class="t m0 x3 h8 yc ff3 fs4 fc0 sc1 ls0 ws0">import java.awt.*;</div><div class="t m0 x3 h8 yd ff3 fs4 fc0 sc1 ls0 ws0">import java.awt.event.*;</div><div class="t m0 x3 h8 ye ff3 fs4 fc0 sc1 ls0 ws0">public class PlayAudioClip extends <span class="_ _3"></span>Applet implements <span class="_ _3"></span>ActionListener<span class="_ _3"></span>,Runnable,ItemListener { </div><div class="t m0 x3 h8 yf ff3 fs4 fc0 sc1 ls0 ws0"> AudioClip clip;</div><div class="t m0 x3 h8 y10 ff3 fs4 fc0 sc1 ls0 ws0"> Choice choice;</div><div class="t m0 x3 h8 y11 ff3 fs4 fc0 sc1 ls0 ws0"> T<span class="_ _3"></span>extField text;</div><div class="t m0 x3 h8 y12 ff3 fs4 fc0 sc1 ls0 ws0"> Thread thread;</div><div class="t m0 x3 h8 y13 ff3 fs4 fc0 sc1 ls0 ws0"> String item=null;</div><div class="t m0 x3 h8 y14 ff3 fs4 fc0 sc1 ls0 ws0"> Button button_play<span class="_ _3"></span>,button_loop,button_stop;</div><div class="t m0 x3 h8 y15 ff3 fs4 fc0 sc1 ls0 ws0"> public void init() { </div><div class="t m0 x3 h8 y16 ff3 fs4 fc0 sc1 ls0 ws0"> choice=new Choice();</div><div class="t m0 x3 h8 y17 ff3 fs4 fc0 sc1 ls0 ws0"> thread=new Thread(this); </div><div class="t m0 x3 h6 y18 ff3 fs4 fc0 sc1 ls0 ws0"> int N=Integer<span class="_ _3"></span>.parseInt(getParameter("<span class="ff1">总数</span>"));</div><div class="t m0 x3 h8 y19 ff3 fs4 fc0 sc1 ls0 ws0"> for(int i=1;i<=N;i++)</div><div class="t m0 x3 h8 y1a ff3 fs4 fc0 sc1 ls0 ws0"> choice.add(getParameter(String.valueOf(i))); </div><div class="t m0 x3 h6 y1b ff3 fs4 fc0 sc1 ls0 ws0"> button_play=new Button("<span class="ff1">开始播放</span>"); </div><div class="t m0 x3 h6 y1c ff3 fs4 fc0 sc1 ls0 ws0"> button_loop=new Button("<span class="ff1">循环播放</span>");</div><div class="t m0 x3 h6 y1d ff3 fs4 fc0 sc1 ls0 ws0"> button_stop=new Button("<span class="ff1">停止播放</span>"); </div><div class="t m0 x3 h8 y1e ff3 fs4 fc0 sc1 ls0 ws0"> text=new T<span class="_ _4"></span>extField(12);</div><div class="t m0 x3 h8 y1f ff3 fs4 fc0 sc1 ls0 ws0"> button_play<span class="_ _4"></span>.addActionListener(this); </div><div class="t m0 x3 h8 y20 ff3 fs4 fc0 sc1 ls0 ws0"> button_stop.addActionListener(this);</div><div class="t m0 x3 h8 y21 ff3 fs4 fc0 sc1 ls0 ws0"> button_loop.addActionListener(this); </div><div class="t m0 x3 h8 y22 ff3 fs4 fc0 sc1 ls0 ws0"> choice.addItemListener(this);</div><div class="t m0 x3 h8 y23 ff3 fs4 fc0 sc1 ls0 ws0"> add(choice);</div><div class="t m0 x3 h8 y24 ff3 fs4 fc0 sc1 ls0 ws0"> add(button_play);</div><div class="t m0 x3 h8 y25 ff3 fs4 fc0 sc1 ls0 ws0"> add(button_loop);</div><div class="t m0 x3 h8 y26 ff3 fs4 fc0 sc1 ls0 ws0"> add(button_stop); </div><div class="t m0 x3 h8 y27 ff3 fs4 fc0 sc1 ls0 ws0"> add(text); </div><div class="t m0 x3 h8 y28 ff3 fs4 fc0 sc1 ls0 ws0"> button_play<span class="_ _4"></span>.setEnabled(false);</div><div class="t m0 x3 h8 y29 ff3 fs4 fc0 sc1 ls0 ws0"> button_loop.setEnabled(false); </div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626ff1b640256a40ceb02a0b/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x3 h8 y2a ff3 fs4 fc0 sc1 ls0 ws0"> } </div><div class="t m0 x3 h8 y2b ff3 fs4 fc0 sc1 ls0 ws0"> public void itemStateChanged(ItemEvent e) { </div><div class="t m0 x3 h8 y2c ff3 fs4 fc0 sc1 ls0 ws0"> item=choice.getSelectedItem();</div><div class="t m0 x3 h8 y2d ff3 fs4 fc0 sc1 ls0 ws0"> int index=item.indexOf(":");</div><div class="t m0 x3 h8 y2e ff3 fs4 fc0 sc1 ls0 ws0"> item=item.substring(index+1).trim();</div><div class="t m0 x3 h8 y2f ff3 fs4 fc0 sc1 ls0 ws0"> if(!(thread.isAlive()))</div><div class="t m0 x3 h8 y30 ff3 fs4 fc0 sc1 ls0 ws0"> thread=new Thread(this); </div><div class="t m0 x3 h8 y31 ff3 fs4 fc0 sc1 ls0 ws0"> try { thread.start();</div><div class="t m0 x3 h8 y32 ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y33 ff3 fs4 fc0 sc1 ls0 ws0"> catch(Exception exp) {</div><div class="t m0 x3 h6 y34 ff3 fs4 fc0 sc1 ls0 ws0"> text.setT<span class="_ _4"></span>ext("<span class="ff1">正在下载音频文件</span>");</div><div class="t m0 x3 h8 y35 ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y36 ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y37 ff3 fs4 fc0 sc1 ls0 ws0"> public void stop() { </div><div class="t m0 x3 h6 y38 ff3 fs4 fc0 sc1 ls0 ws0"> <span class="ff1">【代码<span class="_ _2"> </span></span>1<span class="ff1">】</span> // clip<span class="_ _2"> </span><span class="ff1">停止播放</span></div><div class="t m0 x3 h8 y39 ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y3a ff3 fs4 fc0 sc1 ls0 ws0"> public void actionPerformed(ActionEvent e) { </div><div class="t m0 x3 h8 y3b ff3 fs4 fc0 sc1 ls0 ws0"> if(e.getSource()==button_play) { </div><div class="t m0 x3 h6 y3c ff3 fs4 fc0 sc1 ls0 ws0"> <span class="ff1">【代码<span class="_ _2"> </span></span>2<span class="ff1">】</span> // clip<span class="_ _2"> </span><span class="ff1">开始播放，但不循环播放</span></div><div class="t m0 x3 h8 y3d ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y3e ff3 fs4 fc0 sc1 ls0 ws0"> else if(e.getSource()==button_loop) { </div><div class="t m0 x3 h6 y3f ff3 fs4 fc0 sc1 ls0 ws0"> <span class="ff1">【代码<span class="_ _2"> </span></span>3<span class="ff1">】</span> // clip<span class="_ _2"> </span><span class="ff1">开始播放，并且循环播放</span></div><div class="t m0 x3 h8 y40 ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y41 ff3 fs4 fc0 sc1 ls0 ws0"> else if(e.getSource()==button_stop) {</div><div class="t m0 x3 h6 y42 ff3 fs4 fc0 sc1 ls0 ws0"> <span class="ff1">【代码<span class="_ _2"> </span></span>4<span class="ff1">】</span> // clip<span class="_ _2"> </span><span class="ff1">停止播放</span></div><div class="t m0 x3 h8 y43 ff3 fs4 fc0 sc1 ls0 ws0"> button_play<span class="_ _4"></span>.setEnabled(false);</div><div class="t m0 x3 h8 y44 ff3 fs4 fc0 sc1 ls0 ws0"> button_loop.setEnabled(false);</div><div class="t m0 x3 h8 y45 ff3 fs4 fc0 sc1 ls0 ws0"> } </div><div class="t m0 x3 h8 y46 ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y47 ff3 fs4 fc0 sc1 ls0 ws0"> public void run() { </div><div class="t m0 x3 h8 y48 ff3 fs4 fc0 sc1 ls0 ws0"> clip=getAudioClip(getCodeBase(),item);</div><div class="t m0 x3 h6 y49 ff3 fs4 fc0 sc1 ls0 ws0"> text.setT<span class="_ _4"></span>ext("<span class="ff1">请稍等</span>...");</div><div class="t m0 x3 h8 y4a ff3 fs4 fc0 sc1 ls0 ws0"> if(clip!=null) { </div><div class="t m0 x3 h8 y4b ff3 fs4 fc0 sc1 ls0 ws0"> button_play<span class="_ _4"></span>.setEnabled(true);</div><div class="t m0 x3 h8 y4c ff3 fs4 fc0 sc1 ls0 ws0"> button_loop.setEnabled(true);</div><div class="t m0 x3 h6 y4d ff3 fs4 fc0 sc1 ls0 ws0"> text.setT<span class="_ _4"></span>ext("<span class="ff1">您可以播放了</span>");</div><div class="t m0 x3 h8 y4e ff3 fs4 fc0 sc1 ls0 ws0"> } </div><div class="t m0 x3 h8 y4f ff3 fs4 fc0 sc1 ls0 ws0"> }</div><div class="t m0 x3 h8 y50 ff3 fs4 fc0 sc1 ls0 ws0">}</div><div class="t m0 x1 h4 y51 ff1 fs2 fc0 sc0 ls0 ws0">实验<span class="_ _1"> </span><span class="ff4 sc1">2 </span>绘制五角星</div><div class="t m0 x1 h5 y52 ff2 fs3 fc0 sc1 ls0 ws0">1<span class="ff1 sc0">．答案：</span></div><div class="t m0 x1 h6 y53 ff1 fs4 fc0 sc1 ls0 ws0">【代码<span class="_ _2"> </span><span class="ff3">1</span>】：</div><div class="t m0 x1 h5 y54 ff2 fs3 fc0 sc1 ls0 ws0">2<span class="ff1 sc0">．模板代码</span><span class="fs4"> </span></div><div class="t m0 x2 h7 y55 ff2 fs3 fc0 sc1 ls0 ws0">Star<span class="_ _4"></span>.j<span class="_ _3"></span>ava</div><div class="t m0 x3 h8 y56 ff3 fs4 fc0 sc1 ls0 ws0">import java.applet.*;</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>