java - IndexOutOfBoundException when trying trying to get a .ods cell with jOpenDocument -

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i facing little challenge coding. 

file file = new file("template.ods"); sheet sheet; try {     // load file     sheet = spreadsheet.createfromfile(file).getsheet("certificate");     system.out.println(file);     system.out.println(sheet.getcellat("a1").isempty());     sheet.setvalueat("a1", 1, 1);;     system.out.println(sheet.getcellat(1, 1).gettextvalue());     sheet.getcellat(2, 2).setvalue("b2");     sheet.getcellat(3, 3).setvalue("c3");     sheet.getcellat(4, 4).setvalue("d4");     // save file , open it.     file outputfile = new file("fillingtest.ods");     ooutils.open(sheet.getspreadsheet().saveas(outputfile));  } catch (exception e) {     e.printstacktrace(); }

i getting know jopendocument-library. want fill existing openoffice-spreadsheet-template (template.ods) sample values. when running above code, console shows this:

template.ods
true

java.lang.indexoutofboundsexception: index: 1, size: 1     @ java.util.arraylist.rangecheck(unknown source)     @ java.util.arraylist.get(unknown source)     @ org.jopendocument.dom.spreadsheet.table.getrow(unknown source)     @ org.jopendocument.dom.spreadsheet.table.getimmutablecellat(unknown source)     @ org.jopendocument.dom.spreadsheet.table.getvalueat(unknown source)     @ org.jopendocument.dom.spreadsheet.table.setvalueat(unknown source)     @ jopendocument.createdocument.main(createdocument.java:48)

"template.ods" , "true" shows application retrieved file directory , "true" read cell, empty.

but don't know array throws exception , why says "unknown source".

array of rows throws exception. try adding more rows sheet.setrowcount() before setting cell contents.


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