📄 xamdataaccessorhtml.java
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import java.io.*;import java.util.*;/** TestEdit Load/Save model - HTML version*/public class XamDataAccessorHTML extends XamDataAccessor { public XamDataAccessorHTML() { super(); } /** load one file, given an open BufferedReader */ public Exam load(BufferedReader is) throws IOException { throw new IllegalArgumentException( "XamDataAccessorHTML cannot LOAD files"); } /** Member class used to un-sort (sort randomly) list of answers */ class link { /** Question Number */ int qn; /** A random number */ int r; /** A Question */ Q q; /** This Answer (A, B, C, or D) */ int a; /** Construct a link */ link(int qn, int r, Q q, int a) { this.qn = qn; this.r = r; this.q = q; this.a = a; } } public void save(PrintWriter out, Exam model) { Random r = new Random(); Vector v = new Vector(); out.println("<HTML><HEAD>"); out.println("<TITLE>" + model.crsNum + " " + model.examName + " " + model.examVers + " " + model.crsName + "</TITLE>"); out.println("</HEAD>"); out.println("<BODY>"); out.println("<H1>" + model.crsNum + " " + model.examName + " " + model.examVers + " " + model.crsName + "</H1>"); out.println("<UL>"); // START OF PASS 1 - LIST for (int i=0; i<model.getNumQuestions(); i++) { Q q = model.getQuestion(i); if (q.getQText() == null || q.getQText().length() == 0) continue; out.println("<LI><A NAME=Q" + (i+1) + ">" + (i+1) + ". " + q.getQText() + "</A>"); out.println("<UL>"); // start of one question for (int j=0; j<q.getCount(); j++) { char c = (char)('A'+j); out.println("<LI><A HREF=#Q"+(i+1)+"_"+c +">" + c + ". " + q.getAnsText(j) + "</A>"); v.addElement(new link(i+1, r.nextInt(), q, j)); } out.println("</UL>"); // end of one question } out.println("</UL>"); // END OF PASS ONE // Depends upon JDK 1.2 // Collections.sort(v, new Comparator() { // public int compare(Object o1, Object o2) { // link l1 = (link) o1; // link l2 = (link) o2; // if (l1.r < l2.r) // return -1; // else if (l1.r > l2.r) // return 1; // else // return 0; // } // }); // PASS TWO: Print the answers; use a DL (DT and DD) for formatting out.println("<HR>"); out.println("<H1>Answers - no peeking!</H1>"); out.println("<P>The following are the answers. No peeking by reading sequentially"); out.println("<HR>"); out.println("<DL>"); // START PASS 2 - LIST for (int i=0; i<v.size(); i++) { link l = (link)v.elementAt(i); out.print("<DT><A NAME=Q"+l.qn+"_"+(char)('A'+l.a)+">"+l.q.getAnsText(l.a)+ "</A>"); out.print("<DD>"); out.print("<BR><BR><BR><BR><BR>"); if (l.q.getAns() == l.a) { out.print("CORRECT!. <A HREF=#Q" + (l.qn+1) + ">Next question</A>"); } else { out.print("Sorry, that's not the answer we expected here.<A HREF=#Q" + l.qn + ">Try again</A>"); } out.println("<BR><BR><BR><BR><BR>"); } out.println("</DL>"); out.println("<H1><A NAME=Q" + (v.size()+1) + ">That's all folks!</A></H1>"); out.println("You've done all the questions.</A>"); out.println("<HR>"); out.println("<A HREF=\"#top\">Back to top of page</A>"); // print blank lines so # links near end work OK for (int i=0; i<10; i++) { out.println("<BR>"); } out.println("</BODY>"); out.println("</HTML>"); }}⌨️ 快捷键说明
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