音乐播放器java课程设计报告

JAVA程序设计课程设计报告题目音乐播放器学院计算机科学与工程学院专业信息管理与信息系统学生姓名杨柏昌学号1400320228指导老师汪华登目录1概要设计2详细设计3测试4总结概要设计播放器主要使用JMF框架实现，播放器界面如下详细设计PACKAGEDESIGNCURRICULUMJAVAIMPORTJAVAAWTIMPORTJAVAAWTEVENTIMPORTJAVAXSWINGIMPORTJAVAXSWINGBORDERBORDERIMPORTJAVAIOIMPORTJAVAXMEDIAPUBLICCLASSJMFPLAYEREXTENDSJFRAMEIMPLEMENTSACTIONLISTENER,CONTROLLERLISTENERPLAYERPLAYERNULL/声明一个PLAYER对象STRINGFILEPATH/存放音乐文件夹所在目录STRINGFILENAME/存放歌曲名称BOOLEANCLICKFALSE/用来标记歌曲是否被点击INTSONGINDEX/歌曲元素在列表中的位置INTLOOP3/作为播放模式的标记JLABELSONGNAMELABLEJRADIOBUTTONSEQUENCEBTNJRADIOBUTTONSINGLEBTNJRADIOBUTTONRANDOMBTNBUTTONGROUPLOOPGROUPJBUTTONBEFOREBTNJBUTTONNEXTBTNJBUTTONPLAYBTNJBUTTONPAUSEBTNJBUTTONSTOPBTNJBUTTONFILEBTNJBUTTONEXITBTNCOMPONENTCONTROLCOMPONENT/PLAYER的控制面板CONTAINERCONTAINERJPANELSONGNAMEJPJPANELLOOPJPJPANELBTNJPJPANELLISTJPJPANELBTN2JPLISTLISTPUBLICJMFPLAYERSUPER“音乐播放器“SETBOUNDS480,50,400,600SETRESIZABLEFALSE/设置界面不可修改SETVISIBLETRUECONTAINERGETCONTENTPANE/获得容器主面板CONTAINERSETLAYOUTNEWBOXLAYOUTCONTAINER,BOXLAYOUTY_AXISSONGNAMEJPNEWJPANELNEWGRIDLAYOUT2,2SONGNAMEJPSETSIZE400,50CONTAINERADDSONGNAMEJPSONGNAMELABLENEWJLABEL“正在播放未选取歌曲“SONGNAMEJPADDSONGNAMELABLESONGNAMEJPSETBORDERBORDERFACTORYCREATEETCHEDBORDERLOOPJPNEWJPANELLOOPJPSETSIZE400,50CONTAINERADDLOOPJPSEQUENCEBTNNEWJRADIOBUTTON“顺序播放“SEQUENCEBTNADDACTIONLISTENERNEWACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTEVTLOOP1SINGLEBTNNEWJRADIOBUTTON“单曲循环“SINGLEBTNADDACTIONLISTENERNEWACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTEVTLOOP0RANDOMBTNNEWJRADIOBUTTON“随机播放“RANDOMBTNADDACTIONLISTENERNEWACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTEVTLOOP2LOOPGROUPNEWBUTTONGROUPLOOPGROUPADDSEQUENCEBTNLOOPGROUPADDSINGLEBTNLOOPGROUPADDRANDOMBTNLOOPJPADDSEQUENCEBTNLOOPJPADDSINGLEBTNLOOPJPADDRANDOMBTNBTNJPNEWJPANELBTNJPSETLAYOUTNEWBOXLAYOUTBTNJP,BOXLAYOUTX_AXISBTNJPSETSIZE400,50CONTAINERADDBTNJPBEFOREBTNNEWJBUTTON“上一首“PLAYBTNNEWJBUTTON“播放“PAUSEBTNNEWJBUTTON“暂停“STOPBTNNEWJBUTTON“停止“NEXTBTNNEWJBUTTON“下一首“BEFOREBTNADDACTIONLISTENERTHISPLAYBTNADDACTIONLISTENERTHISPAUSEBTNADDACTIONLISTENERTHISSTOPBTNADDACTIONLISTENERTHISNEXTBTNADDACTIONLISTENERTHISBTNJPADDBEFOREBTNBTNJPADDPLAYBTNBTNJPADDPAUSEBTNBTNJPADDSTOPBTNBTNJPADDNEXTBTNLISTJPNEWJPANELNEWBORDERLAYOUTLISTJPSETSIZE300,300CONTAINERADDLISTJPBORDERBORDERBORDERFACTORYCREATEETCHEDBORDERBORDERTITLEDBORDERFACTORYCREATETITLEDBORDERBORDER,“歌曲列表“LISTJPSETBORDERTITLEDFILEBTNNEWJBUTTON“选择文件夹“EXITBTNNEWJBUTTON“退出“FILEBTNADDACTIONLISTENERTHISEXITBTNADDACTIONLISTENERTHISBTN2JPNEWJPANELBTNJPSETSIZE300,50CONTAINERADDBTN2JPBTN2JPADDFILEBTNBTN2JPADDEXITBTNLISTNEWLISTLISTSETBACKGROUNDCOLORPINKJSCROLLPANESONGLISTSCROLLNEWJSCROLLPANELISTLISTJPADDSONGLISTSCROLL,BORDERLAYOUTCENTERLISTADDMOUSELISTENERNEWMOUSEADAPTER/对歌曲点击的监听PUBLICVOIDMOUSECLICKEDMOUSEEVENTEIFEGETCLICKCOUNT1FILENAMELISTGETSELECTEDITEMSONGINDEXLISTGETSELECTEDINDEXCLICKTRUEADDWINDOWLISTENERNEWWINDOWADAPTERPUBLICVOIDWINDOWCLOSINGWINDOWEVENTEIFPLAYERNULLPLAYERSTOPPLAYERDEALLOCATESYSTEMEXIT0VALIDATE/对按钮事件的处理/PUBLICVOIDACTIONPERFORMEDACTIONEVENTEIFEGETSOURCEFILEBTNFILEDIALOGDIALOGNEWFILEDIALOGTHIS,“音乐“,FILEDIALOGLOADDIALOGSETVISIBLETRUEFILEPATHDIALOGGETDIRECTORYIFFILEPATHNULLFILEFILEDIRNEWFILEFILEPATHFILEFILELISTFILEDIRLISTFILESFORFILEFILEFILELISTSTRINGFILENAMEFILEGETNAMETOLOWERCASEIFFILENAMEENDSWITH“WAV“|FILENAMEENDSWITH“MP3“LISTADDFILENAMEIFEGETSOURCEPLAYBTNIFCLICKCLICKCLICKTRYIFPLAYERNULLPLAYERSTOPPLAYERDEALLOCATEIFCONTROLCOMPONENTNULLSONGNAMEJPREMOVECONTROLCOMPONENTSONGNAMEJPVALIDATEPLAYERMANAGERCREATEPLAYERNEWMEDIALOCATOR“FILE“FILEPATHFILENAMEPLAYERGETDURATIONPLAYERPREFETCHPLAYERADDCONTROLLERLISTENERTHISSONGNAMELABLESETTEXTFILENAMECATCHIOEXCEPTIONE3CATCHNOPLAYEREXCEPTIONE2ELSEIFCLICKPLAYERSTARTIFEGETSOURCEEXITBTNSYSTEMEXIT0IFEGETSOURCEPAUSEBTNIFPLAYERNULLPLAYERSTOPIFEGETSOURCESTOPBTNIFPLAYERNULLPLAYERSTOPPLAYERSETMEDIATIMENEWTIME0ELSERETURNIFEGETSOURCEBEFOREBTNINTNLISTGETITEMCOUNTIFSONGINDEXNSONGINDEX0FILENAMELISTGETITEMSONGINDEXRUNPUBLICVOIDRUNTRYIFPLAYERNULLPLAYERSTOPPLAYERDEALLOCATEIFCONTROLCOMPONENTNULLSONGNAMEJPREMOVECONTROLCOMPONENTSONGNAMEJPVALIDATEPLAYERMANAGERCREATEPLAYERNEWMEDIALOCATOR“FILE“FILEPATHFILENAMEPLAYERGETDURATIONPLAYERPREFETCHPLAYERADDCONTROLLERLISTENERTHISSONGNAMELABLESETTEXTFILENAMECATCHIOEXCEPTIONE3CATCHNOPLAYEREXCEPTIONE2/对控制面板事件的处理/PUBLICSYNCHRONIZEDVOIDCONTROLLERUPDATECONTROLLEREVENTEVENTIFEVENTINSTANCEOFREALIZECOMPLETEEVENTIFCONTROLCOMPONENTPLAYERGETCONTROLPANELCOMPONENTNULLSONGNAMEJPADDCONTROLCOMPONENTELSEIFEVENTINSTANCEOFPREFETCHCOMPLETEEVENTPLAYERSTARTELSEIFEVENTINSTANCEOFENDOFMEDIAEVENTPLAYERSETMEDIATIMENEWTIME0IFLOOP0PLAYERSTARTIFLOOP1INTNLISTGETITEMCOUNTIFSONGINDEXNFILENAMELISTGETITEMSONGINDEX1SONGINDEXSONGINDEX1RUNIFLOOP2INTNLISTGETITEMCOUNTIFSONGINDEXNSONGINDEXINTMATHRANDOM1000NFILENAMELISTGETITEMSONGINDEXRUNVALI