java - Parse all PDF pages at once with iText -


i trying parse pdf file "itext". trying achieve parse pages @ once.

try {             pdfreader reader = new pdfreader("d:\\hl_sv\\l04mf.pdf");             int pages = reader.getnumberofpages();              string content = "";             (int = 0; <= pages; i++) {                     system.out.println("============page number " + + "=============" );                     content = content + " " +      pdftextextractor.gettextfrompage(reader, i);              }             system.out.println(content);      }

i getting error:

exception in thread "main" java.lang.nullpointerexception     @ com.itextpdf.text.pdf.parser.pdfreadercontentparser.processcontent(pdfreadercontentparser.java:77)     @ com.itextpdf.text.pdf.parser.pdftextextractor.gettextfrompage(pdftextextractor.java:74)     @ com.itextpdf.text.pdf.parser.pdftextextractor.gettextfrompage(pdftextextractor.java:89)     @ com.pdf.pdf.main(pdf.java:18)

other problem facing - hyphen being parsed ? question mark. how can fix that?

i appreciate help.

edit works me cant still solve hyphen bug.

try {             pdfreader reader = new pdfreader("d:\\hl_sv\\l04mf.pdf");             int pages = reader.getnumberofpages();              for(int = 1; i<= pages; i++) {                     system.out.println("============page number " + + "=============" );                     string line = pdftextextractor.gettextfrompage(reader,i);                     system.out.println(line);                 }     } 

public static string extractpdftext() throws ioexception {   pdfreader pdfreader = new pdfreader("/path/to/file/myfile.pdf");   int pages = pdfreader.getnumberofpages();   string pdftext = "";   (int ctr = 1; ctr < pages + 1; ctr++) {     pdftext += pdftextextractor.gettextfrompage(pdfreader, ctr); // page number cannot 0 or throw npe   }   pdfreader.close();   return pdftext; }

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