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getRealPath() is returning the actual path in the local system, but returns null when deployed with a .war file. <%@ page import="java.io.*" %> <%@ page contentType="text/html;charset=ISO-8859-1" %> <% int iLf = 10; char cLf = (char)iLf; String a= application.getResource("/"); //String myfile = application.getRealPath("/")+ "generate.xml"; //String myfile = request.getContextPath()+"generate.xml"; //String myfile = request.getRealPath("/")+"generate.xml"; out.println(myfile); File outputFile = new File(myfile); outputFile.createNewFile(); FileWriter outfile = new FileWriter(outputFile); outfile.write(" <?xml version='1.0' encoding='UTF-8'?> "+cLf); outfile.write(" <playlist version='1' xmlns = 'http://xspf.org/ns/0/' > " +cLf); outfile.write(" <title>My Band Rocks Your Socks</title> "+cLf); outfile.write("<trackList>"+cLf); %> <%! String[] sports; %> <% sports = request.getParameterValues("sports"); out.println("<html><body><h1>hello</h1></body></html>"); if (sports != null) { for (int i = 0; i < sports.length; i++) { // outfile.writeln (sports[i]); String total=sports[i]; String[] sa=total.split("[,]"); // String[] sub=new String(); outfile.write("<track>"+cLf); for (int j=0;j<sa.length;j++) { // outfile.writeln(sa[j]); // outfile.writeln("sa["+j+"]="+sa[j]); if( j == 0) { outfile.write("<location>" + sa[0] +"</location>"+cLf); } else if (j == 1) { outfile.write("<image>" + sa[1] +"</image>"+cLf); } else if( j==2) {

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