非常好的java课件_java_其他

<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/628802d416e0ca7141e54116/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/628802d416e0ca7141e54116/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x2 h4 y3 ff2 fs1 fc1 sc1 ls0 ws0">主要内容</div><div class="t m0 x2 h5 y4 ff3 fs1 fc1 sc0 ls0 ws0">1 <span class="_ _1"> </span><span class="ff4 sc1">流操作总结</span></div><div class="t m0 x2 h5 y5 ff5 fs1 fc1 sc0 ls0 ws0">2 <span class="_"> </span><span class="ff4 sc1">基本绘图类</span></div><div class="t m0 x2 h5 y6 ff5 fs1 fc1 sc0 ls0 ws0">3 <span class="_"> </span><span class="ff4 sc1">面向对象式绘图<span class="_ _1"> </span></span>---Java<span class="_ _2"></span>2D</div><div class="t m0 x2 h5 y7 ff3 fs1 fc1 sc0 ls0 ws0">4 <span class="_ _1"> </span><span class="ff4 sc1">独立运行程序的绘图<span class="_"> </span>环境</span></div><div class="t m0 x3 h4 y8 ff2 fs1 fc0 sc0 ls0 ws0">第<span class="_ _1"> </span><span class="ff1">8<span class="_ _1"> </span></span>讲 图形操作</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></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/628802d416e0ca7141e54116/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x4 h6 y9 ff1 fs2 fc2 sc0 ls0 ws0">1.<span class="_ _3"> </span><span class="ff2">流操作总结</span></div><div class="t m0 x5 h7 ya ff2 fs3 fc0 sc0 ls0 ws0">操作方向：输入流，<span class="_ _2"></span>输出流</div><div class="t m0 x5 h7 yb ff2 fs3 fc0 sc0 ls0 ws0">操作数据类型</div><div class="t m0 x5 h7 yc ff2 fs3 fc0 sc0 ls0 ws0"> <span class="_ _4"> </span>字节流 直接操作字<span class="_ _2"></span>节，实现<span class="_ _4"> </span><span class="ff1">Data<span class="_ _2"></span>Input/DataOutput<span class="_ _5"> </span></span>接口的流</div><div class="t m0 x6 h7 yd ff2 fs3 fc0 sc0 ls0 ws0">类<span class="_ _6"> </span><span class="ff1">DataInputStrea<span class="_ _2"></span>m/DataOutputStream<span class="_"> </span></span>支持读写格式化数据。</div><div class="t m0 x5 h7 ye ff2 fs3 fc0 sc0 ls0 ws0"> <span class="_ _4"> </span>字符流 直接操作字<span class="_ _2"></span>符，加入缓冲后<span class="_ _2"></span>可读取整行数据。</div><div class="t m0 x5 h7 yf ff2 fs3 fc0 sc0 ls0 ws0">文件流：<span class="_ _4"> </span><span class="ff1">FileInputStream<span class="_ _2"></span>/FileOutputStrea</span></div><div class="t m0 x5 h8 y10 ff1 fs3 fc0 sc0 ls0 ws0"> <span class="_ _7"></span> Fil<span class="_ _2"></span>eReade<span class="_ _2"></span>r/FileWriter</div><div class="t m0 x5 h7 y11 ff2 fs3 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span> <span class="_ _5"> </span>可随机读写格式化数据<span class="_ _5"> </span><span class="ff1">RamdomAccessFi<span class="_ _2"></span>le</span></div><div class="t m0 x5 h7 y12 ff2 fs3 fc0 sc0 ls0 ws0">管道流：支持不同方<span class="_ _2"></span>向流的连接，使用不同<span class="_ _2"></span>的对象进行读写</div><div class="t m0 x5 h7 y13 ff2 fs3 fc0 sc0 ls0 ws0">特殊流<span class="_ _6"> </span><span class="ff1">: PrintStea<span class="_ _2"></span>m/PrintWriter</span></div><div class="t m0 x5 h8 y14 ff1 fs3 fc0 sc0 ls0 ws0"> <span class="_ _7"></span> ObjectInp<span class="_ _2"></span>utStram/ObjectOu<span class="_ _2"></span>tputStream</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/628802d416e0ca7141e54116/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x7 h6 y15 ff1 fs2 fc2 sc0 ls0 ws0">2<span class="_ _3"> </span><span class="ff2">基本绘图操作</span></div><div class="t m0 x8 h9 y16 ff1 fs4 fc0 sc0 ls0 ws0">2.1<span class="_ _8"> </span><span class="ff2">字体类<span class="_ _9"> </span></span>Font</div><div class="t m0 x8 h9 y17 ff1 fs4 fc0 sc0 ls0 ws0"> Font<span class="_ _8"> </span><span class="ff2">类的构造器建立不<span class="_ _7"></span>同名字、样式和<span class="_ _7"></span>磅数的新字<span class="_ _7"></span>体</span></div><div class="t m0 x9 h9 y18 ff2 fs4 fc0 sc0 ls0 ws0">对象，可以改<span class="_ _7"></span>变当前字体</div><div class="t m0 x8 h9 y19 ff1 fs4 fc0 sc0 ls0 ws0"> Font<span class="_ _8"> </span><span class="ff2">构造器：<span class="_ _9"> </span></span>Font(String<span class="_ _2"></span> name,int style,int size)<span class="_ _2"></span>;</div><div class="t m0 x8 h9 y1a ff1 fs4 fc0 sc0 ls0 ws0"> name:<span class="_ _8"> </span><span class="ff2">指定字体名称，<span class="_ _9"> </span></span>Java<span class="_ _8"> </span><span class="ff2">中的可用字体：<span class="_ _9"> </span></span>Courier<span class="_ _8"> </span><span class="ff2">、</span></div><div class="t m0 x9 h9 y1b ff2 fs4 fc0 sc0 ls0 ws0"> <span class="_ _8"> </span><span class="ff1">Dialog<span class="_ _9"> </span></span>、<span class="_ _8"> </span><span class="ff1">Helvetica<span class="_ _8"> </span></span>、<span class="_ _8"> </span><span class="ff1">TimesR<span class="_ _7"></span>oman<span class="_ _8"> </span><span class="ff2">和<span class="_ _9"> </span></span>Symbol<span class="_ _8"> </span><span class="ff2">。</span></span></div><div class="t m0 x8 h9 y1c ff1 fs4 fc0 sc0 ls0 ws0"> sty<span class="_ _2"></span>le :<span class="_ _8"> </span><span class="ff2">指定字体的式样<span class="_ _9"> </span></span>,<span class="_ _9"> </span><span class="ff2">可以是<span class="_ _8"> </span></span>Font.PLAIN<span class="_ _9"> </span><span class="ff2">、<span class="_ _8"> </span></span>Font.B</div><div class="t m0 x9 h9 y1d ff1 fs4 fc0 sc0 ls0 ws0">OLD<span class="_ _9"> </span><span class="ff2">、<span class="_ _8"> </span></span>Font.ITALIC<span class="_ _9"> </span><span class="ff2">或<span class="_ _8"> </span></span>BOLD<span class="_ _9"> </span><span class="ff2">与<span class="_ _8"> </span></span>ITALIC<span class="_ _9"> </span><span class="ff2">的组合。</span></div><div class="t m0 x8 h9 y1e ff1 fs4 fc0 sc0 ls0 ws0"> size<span class="_ _8"> </span><span class="ff2">指定字体的磅数。</span></div><div class="t m0 x8 ha y1f ff1 fs4 fc0 sc0 ls0 ws0"> Font myfont<span class="_ _2"></span> =new Font("Courier",Font.BOLD,14);</div><div class="t m0 x8 h9 y20 ff1 fs4 fc0 sc0 ls0 ws0"> SetFont<span class="_ _8"> </span><span class="ff2">（<span class="_ _8"> </span></span>Font ft<span class="_ _8"> </span><span class="ff2">）来改变默认<span class="_ _7"></span>的字体设定</span></div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/628802d416e0ca7141e54116/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x1 hb y21 ff1 fs5 fc0 sc0 ls0 ws0">//ListFonts </div><div class="t m0 x1 hb y22 ff1 fs5 fc0 sc0 ls0 ws0">import java.awt.*;</div><div class="t m0 x1 hb y23 ff1 fs5 fc0 sc0 ls0 ws0">public class<span class="_ _2"></span> ListFonts</div><div class="t m0 x1 hb y24 ff1 fs5 fc0 sc0 ls0 ws0">{</div><div class="t m0 xa hb y25 ff1 fs5 fc0 sc0 ls0 ws0">public static void <span class="_ _2"></span>main(String[] args)</div><div class="t m0 xa hb y26 ff1 fs5 fc0 sc0 ls0 ws0">{</div><div class="t m0 xa hb y27 ff1 fs5 fc0 sc0 ls0 ws0">String[] fontNames = GraphicsEnvironment</div><div class="t m0 xa hb y28 ff1 fs5 fc0 sc0 ls0 ws0">.getLocalGraphicsEnvironment()</div><div class="t m0 xa hb y29 ff1 fs5 fc0 sc0 ls0 ws0">.getAvailableFontFamilyNames();</div><div class="t m0 xa hb y2a ff1 fs5 fc0 sc0 ls0 ws0">for (int i = 0; i < fontNames.length; i++)</div><div class="t m0 xa hb y2b ff1 fs5 fc0 sc0 ls0 ws0">System.out.println(fontNames[i]);</div><div class="t m0 x1 hb y2c ff1 fs5 fc0 sc0 ls0 ws0"> }</div><div class="t m0 x1 hb y2d ff1 fs5 fc0 sc0 ls0 ws0">}</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/628802d416e0ca7141e54116/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x1 h4 y2e ff1 fs1 fc0 sc0 ls0 ws0">2.2<span class="_ _1"> </span><span class="ff2">颜色类<span class="_ _1"> </span></span>Color</div><div class="t m0 x1 h9 y2f ff1 fs4 fc0 sc0 ls0 ws0">1<span class="_ _8"> </span><span class="ff2">预定义颜<span class="_ _7"></span>色常量</span></div><div class="t m0 x1 ha y30 ff1 fs4 fc0 sc0 ls0 ws0"> bla<span class="_ _2"></span>ck blue cyan d<span class="_ _2"></span>arkGray gray <span class="_ _2"></span>green lightGray ma</div><div class="t m0 x6 ha y31 ff1 fs4 fc0 sc0 ls0 ws0">genta orange pink <span class="_ _2"></span>red white yellow </div><div class="t m0 x1 h9 y32 ff1 fs4 fc0 sc0 ls0 ws0">2 <span class="_ _8"> </span><span class="ff2">用户定义<span class="_ _7"></span>颜色</span></div><div class="t m0 x1 h9 y33 ff2 fs4 fc0 sc0 ls0 ws0"> <span class="_ _8"> </span>构造方法<span class="_ _9"> </span><span class="ff1">Color<span class="_ _9"> </span></span>（<span class="_ _8"> </span><span class="ff1">int r,int g,<span class="_ _2"></span>int b<span class="_ _a"> </span></span>）</div><div class="t m0 x1 h9 y34 ff1 fs4 fc0 sc0 ls0 ws0">3 <span class="_ _8"> </span><span class="ff2">设置颜色<span class="_ _7"></span>：</span></div><div class="t m0 x1 h9 y35 ff2 fs4 fc0 sc0 ls0 ws0"> <span class="_ _8"> </span>使用<span class="_ _9"> </span><span class="ff1">Graphics<span class="_ _8"> </span></span>类的<span class="_ _8"> </span><span class="ff1">setColor<span class="_ _8"> </span></span>（<span class="_ _9"> </span><span class="ff1">Color c<span class="_ _8"> </span></span>）方法来改</div><div class="t m0 x6 h9 y36 ff2 fs4 fc0 sc0 ls0 ws0">变当前颜色。<span class="_ _7"></span>也可以使用<span class="_ _9"> </span><span class="ff1">getColor<span class="_ _8"> </span></span>方法来获得当<span class="_ _7"></span>前</div><div class="t m0 x6 h9 y37 ff2 fs4 fc0 sc0 ls0 ws0">颜色。默认颜<span class="_ _7"></span>色为黑色。<span class="_ _7"></span>（前景色）</div><div class="t m0 x1 h9 y38 ff1 fs4 fc0 sc0 ls0 ws0"> SetBackground<span class="_ _a"> </span><span class="ff2">（<span class="_ _9"> </span></span>Color c<span class="_ _8"> </span><span class="ff2">）改变背景色</span></div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>