java作业（java作业）.doc

java作业（java作业） 软件工程 r1141 宋洋 16 java 作业 public class qingdrawpad extends jframe { private objectinputstream input; private objectoutputstream output; private jbutton choices []; private string [] names = { new open. save. pencil by, line, rect , frect , oval, foval , circle, fcircle , roundrect , frrect , rubber. color. stroke. the word }; private string [] = {stylenames 宋体, 隶书, 华文彩云, 仿宋 _ gb2312, 华文行楷 , 方正舒体, times new roman, serif, monospaced , sonsserif, garamond. }; private icon items []; jtoolbar buttonpanel; private jlabel statusbar; private drawpanel drawingarea; private int width = 850, height = 550; drawings [] itemlist = new drawings [5]; private int currentchoice = 3; int index = 0; private color color = color.black; int r, g, b; int f1, f2; the string style1; private float stroke = 1.0f; jcheckbox bold, italic; jcombobox styles; public qingdrawpad () { super (卿乐绘图画板 (中国风)); jmenubar bar = new jmenubar (); jmenu filemenu = new jmenu (文件); / / filemenu.setmnemonic (f); jmenuitem newitem = new jmenuitem (新建); newitem.addactionlistener ( new actionlistener () { public void actionperformed (actionevent (e) { newfile ();} } ); filemenu.add (newitem); jmenuitem saveitem = new jmenuitem (保存); saveitem.addactionlistener ( new actionlistener () { public void actionperformed (actionevent (e) { savefile (); / } } ); filemenu.add (saveitem); jmenuitem loaditem = new jmenuitem (打开); loaditem.addactionlistener ( new actionlistener () { public void actionperformed (actionevent (e) { loadfile (); } } ); filemenu. add (loaditem); filemenu.addseparator (); jmenuitem exititem = new jmenuitem (退出); exititem.addactionlistener ( new actionlistener () { public void actionperformed (actionevent (e) { system.exit (0); } } ); filemenu.add (exititem); bar.add (filemenu); jmenu colormenu = new jmenu (颜色); jmenuitem coloritem = new jmenuitem (选择颜色); coloritem.addactionlistener ( new actionlistener () { public void actionperformed (actionevent (e) { choosecolor ();} } ); colormenu.add