1、 dataConversion.convertData();dataStatistics.statisticalData();dataAnalysis.analysisData();publicvoiddisplayReport()dataDisplay.displayData();FileReader.javapublicclassFileReaderpublicvoidreadFile(Stringstr)System.out.println(”從+str+讀取數(shù)據(jù)”);DataConversion.javapublicclassDataConversionpublicvoidconver

2、tData()System.out.println(”進(jìn)行數(shù)據(jù)轉(zhuǎn)換”)；DataStatistics.javapublicclassDataStatisticspublicvoidstatisticalData()System.out.println(”進(jìn)行數(shù)據(jù)統(tǒng)計(jì)”)；DataAnalysis.javapublicclassDataAnalysispublicvoidanalysisData()System.out.println(”進(jìn)行數(shù)據(jù)分析”)；DataDisplay.javapublicclassDataDisplaypublicvoiddisplayData()System.out

3、.println(”用報(bào)表顯示數(shù)據(jù)”)；XMLUtil.javaimportjavax.xml.parsers.*;importorg.w3c.dom.*;importorg.xml.sax.SAXException;importjava.io.*;publicclassXMLUtil該方法用于從XML配置文件中提取具體類類名，并返回一個(gè)實(shí)例對象publicstaticObjectgetBean()try創(chuàng)建DOM文檔對象DocumentBuilderFactorydFactory=DocumentBuilderFactory.newInstance();DocumentBuilderbuil

4、der=dFactory.newDocumentBuilder();Documentdoc;doc=builder.parse(newFile(src/config.xml);獲取包含類名的文本節(jié)點(diǎn)NodeListnl=doc.getElementsByTagName(className);NodeclassNode=nl.item(O).getFirstChild();StringcName=classNode.getNodeValue();通過類名生成實(shí)例對象并將其返回Classc=Class.forName(cName);Objectobj=c.newInstance();returnobj;catch(Exceptione)e.printStackTrace();returnnull;publicclassClientpublicstaticvoidmain(Stringargs)AbstractFacadeaf;af=(Ab